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2011

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A Randomized Trial Comparing The Effect Of Two Phone-Based Interventions On Colorectal Cancer Screening Adherence, Usha Memon, Rhonda Belue, Stéphanie Wahab, Jessica Rugen, Anita Kinney, Peter Maramaldi, Debra Wujcik, Laura A. Szalacha Dec 2011

A Randomized Trial Comparing The Effect Of Two Phone-Based Interventions On Colorectal Cancer Screening Adherence, Usha Memon, Rhonda Belue, Stéphanie Wahab, Jessica Rugen, Anita Kinney, Peter Maramaldi, Debra Wujcik, Laura A. Szalacha

School of Social Work Faculty Publications and Presentations

Background

Early-stage diagnosis of colorectal cancer is associated with high survival rates; screening prevalence, however, remains suboptimal.

Purpose

This study seeks to test the hypothesis that participants receiving telephone-based tailored education or motivational interviewing had higher colorectal cancer screening completion rates compared to usual care.

Methods

Primary care patients not adherent with colorectal cancer screening and with no personal or family history of cancer (n = 515) were assigned by block randomization to control (n = 169), tailored education (n = 168), or motivational interview (n = 178). The response rate was 70%; attrition was 24%. …


Reforming Attempt Liability Under 18 U.S.C. § 2422(B): An Insubstantial Step Back From United States V. Rothenberg , Korey J. Christensen Dec 2011

Reforming Attempt Liability Under 18 U.S.C. § 2422(B): An Insubstantial Step Back From United States V. Rothenberg , Korey J. Christensen

Duke Law Journal

The statute under which Internet sex predators are prosecuted for illicit online communications prohibits attempts to “knowingly persuade[], induce[], entice[], or coerce[]” minors to engage in “any sexual activity for which any person” can be criminally charged. This broad language has allowed courts to gradually expand the statute’s reach by reducing the level of conduct considered sufficient to constitute a substantial step toward commission of the crime. The Eleventh Circuit’s decision in United States v. Rothenberg is especially illustrative of this problematic expansion, as the court held that a conversation between consenting adults, without more, was sufficient to support a …


Distributed Algorithms For Energy Savings In The Core Network, Lin Liu Dec 2011

Distributed Algorithms For Energy Savings In The Core Network, Lin Liu

School of Computing: Dissertations, Theses, and Student Research

Recently, many efforts have been undertaken to reduce the energy consumption of core networks. Bundle link is a commonly deployed technique in core networks to combine several high-speed physical sublinks into a virtual connection to achieve bandwidth upgrade flexibility and network reliability. The traffic passing through a bundle link can be carried fully over the first few sublinks (bin packing) or evenly distributed over all sublinks (load balancing). In the current network when a bundle link is on, all of its sublinks are on, thus, selectively shutting down a few sublinks during periods of low traffic could save a large …


Mapping Injustice: The World Is Witness, Place-Framing, And The Politics Of Viewing On Google Earth, Joshua P. Ewalt Dec 2011

Mapping Injustice: The World Is Witness, Place-Framing, And The Politics Of Viewing On Google Earth, Joshua P. Ewalt

Department of Communication Studies: Faculty Publications

Working from assumptions that inequality is often spatially informed, a set of interactive cartographies has recently proliferated on Google Earth. In this essay, I analyze one of those interactive cartographies: The World is Witness produced by the United States Holocaust Memorial Museum (USHMM). I read the map as an organizational rhetoric that frames place as "embedded injustice." I also argue that thorough analysis of the framing of local place on Google Earth must inherently question whether the map can create a disruption in the viewing subject. While the map presents vital information on excruciatingly despicable acts of injustice, and the …


A General Attack Method For Steganography Removal Using Pseudo-Cfa Re-Interpolation, Pradhumna Shrestha, Michael Hempel, Tao Ma, Dongming Peng, Hamid Sharif Dec 2011

A General Attack Method For Steganography Removal Using Pseudo-Cfa Re-Interpolation, Pradhumna Shrestha, Michael Hempel, Tao Ma, Dongming Peng, Hamid Sharif

Department of Electrical and Computer Engineering: Faculty Publications (to 2015)

Watermarking and steganography are two of the most researched topics in multimedia forensics. However, easy availability of tools and technology has made their misuse a serious concern. To counteract this development some effective tools are necessary to remove malicious steganography. In this work, we introduce a novel watermark attack method which can destroy hidden information embedded in images based on the principle of re-interpolation of Color Filter Array (CFA) artifacts. In digital cameras and scanners, CFA filters are used to acquire low-resolution physical color channel information and produce a high-quality image by subsequent interpolation. We propose to emulate a similar …


Water Quality Models For Stormwater Runoff In Two Lincoln, Nebraska Urban Watersheds, Jake Fisher Dec 2011

Water Quality Models For Stormwater Runoff In Two Lincoln, Nebraska Urban Watersheds, Jake Fisher

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

Water quality monitoring was conducted in two urban watersheds (Colonial Hills and Taylor Park) located in southeast Lincoln, NE over a three year period spanning from October 2008 through September 2011. In-line probes continuously measured for turbidity, conductivity, dissolved oxygen, and water temperature while other water quality constituents were analyzed for discrete water samples collected using grab and automatic sampling techniques. The water quality data was used to calculate event mean concentrations (EMCs) for sixteen storm events sampled over the duration of the project period. Three types of stormwater quality multiple linear regression models were developed for the estimation of …


Perceptions Of Basic Knowledge Needed By Perioperative Registered Nurses For Competency, Janna M. Galloway Dec 2011

Perceptions Of Basic Knowledge Needed By Perioperative Registered Nurses For Competency, Janna M. Galloway

Theses and Dissertations

This paper is a study of current perceptions of perioperative nurses view of competency in the operating room. Perioperative education, competency standards, and competency assessment have been used to guide clinical and professional nursing behaviors. The need for a standardized education program and competency assessment tool has been identified, but inconsistencies and disagreement about the components that should be included for these areas still remains. A review of current literature was conducted to include topics involving perioperative education, competency assessment, and nursing perceptions regarding competency. A survey of current practicing perioperative nurses was also conducted; both qualitative and quantitative data …


Image Selling: How Depictions Of Power Relations, Plasticity, And Abjection In High-Fashion Advertisements Construct Terrifying Social Narratives, Jennifer Lee Litton Dec 2011

Image Selling: How Depictions Of Power Relations, Plasticity, And Abjection In High-Fashion Advertisements Construct Terrifying Social Narratives, Jennifer Lee Litton

Masters Theses and Doctoral Dissertations

This paper examines how high-fashion advertisements use visual rhetoric in order to construct social narratives related to power struggles, plasticity, and abjection. In creating these types of images, high-fashion advertisers send explicit messages to their viewers regarding the ways they should engage with the depicted social narratives, ranging from objectification to violence to death. Through a close rhetorical analysis and observational study of high-fashion advertisements, this paper discusses the problematic nature of the marketing techniques and how they skew interpretations of social issues.


Work In Progress - Virtual Facilitation And Procedural Knowledge Education, Ray Luechtefeld, Steve Eugene Watkins Dec 2011

Work In Progress - Virtual Facilitation And Procedural Knowledge Education, Ray Luechtefeld, Steve Eugene Watkins

Electrical and Computer Engineering Faculty Research & Creative Works

Engineering students acquire both conceptual and procedural knowledge as part of their education. While conceptual knowledge, such as understanding why certain design practices are required or having knowledge of the general principles of engineering development, is essential, procedural knowledge to enact specific engineering practices is also needed. This kind of knowledge, such as balancing chemical equations, solving calculus problems, or finding Thevenin-Norton equivalents, is usually taught through rote problem solving, sometimes with the guidance of teaching assistants or aid from the instructor if students find themselves "stuck". However, a Virtual Facilitator, designed to help students develop team skills, can also …


Resource Allocation, Level Of International Diversification And Firm Performance, Aziz Bakay, Ahmed Elkassabgi, Murad Moqbel Dec 2011

Resource Allocation, Level Of International Diversification And Firm Performance, Aziz Bakay, Ahmed Elkassabgi, Murad Moqbel

Information Systems Faculty Publications

This paper investigates the threads between international diversification and firm performance, resource allocation to R&D and capital expenditure. The context of this study is a resource-based view and transaction costs theory. Firms that are going international, benefit from the resources available to them outside their home country as well as from the utilization of their core competencies in other countries. Regression models without interactive terms indicate that resource allocation significantly impacts firm performance. Capital expenditure is positively associated with return on assets, while research and development expenditure undermines the firm’s performance. Analyses suggest that there is no thorough relation between …


Dynamic Partial Reconfiguration For Pipelined Digital Systems— A Case Study Using A Color Space Conversion Engine, Ryan Toukatly Dec 2011

Dynamic Partial Reconfiguration For Pipelined Digital Systems— A Case Study Using A Color Space Conversion Engine, Ryan Toukatly

Theses

In digital hardware design, reconfigurable devices such as Field Programmable Gate Arrays (FPGAs) allow for a unique feature called partial reconfiguration PR). This refers to the reprogramming of a subset of the reconfigurable logic during active operation. PR allows multiple hardware blocks to be consolidated into a single partition, which can be reprogrammed at run-time as desired. This may reduce the logic circuit (and silicon area) requirements and greatly extend functionality. Furthermore, dynamic partial reconfiguration (DPR) refers to PR that does not halt the system during reprogramming. This allows for configuration to overlap with normal processing, potentially achieving better system …


Determining A Relationship Between Design Characteristics And The End-Of-Life Disposition Of Cellular Phones, Ashley Devierno Dec 2011

Determining A Relationship Between Design Characteristics And The End-Of-Life Disposition Of Cellular Phones, Ashley Devierno

Theses

In recent years, the consumption of consumer electronics has increased rapidly in the United States and across the world. As the consumer electronics industry continues to innovate and turn over new products, older products become obsolete and enter the ever growing electronics waste stream, which was 2.3 million tons in 2007.The increasing volume of electronic waste (e-Waste) has gained the attention of consumers, media outlets, and policy makers across the world. This has put pressure on original equipment manufacturers (OEMs) of consumer electronics to manage their products in an environmentally responsible way at the end of their product lifetimes. It …


Eigenvalue Distributions Of Mimo Rayleigh-Product Channels With Arbitrary-Power Co-Channel Interference And Noise, Yongpeng Wu, Shi Jin, Xiqi Gao, Chengshan Xiao, Matthew R. Mckay Dec 2011

Eigenvalue Distributions Of Mimo Rayleigh-Product Channels With Arbitrary-Power Co-Channel Interference And Noise, Yongpeng Wu, Shi Jin, Xiqi Gao, Chengshan Xiao, Matthew R. Mckay

Electrical and Computer Engineering Faculty Research & Creative Works

This paper studies the eigenvalue distributions of multiple-input multiple-output (MIMO) Rayleigh-product channels in the presence of both co-channel interference and thermal noise. We first present exact expressions for the marginal ordered eigenvalue distributions of the channel Gram matrix when multichannel beamforming is employed, from which we obtain exact results of the outage probability on each eigenmode. Our results apply to a wide class of multichannel systems which transmit on the eigenmodes of the MIMO channel, allowing for transmission on any numbers of eigen subchannels, with any numbers of antennas, any numbers of scatterers in the environment, and any numbers of …


A Survey Study Comparing Adult Orthodontic Patient Quality Of Life Between Invisalign And Fixed Appliances., Keith Christopher Nicholson Dec 2011

A Survey Study Comparing Adult Orthodontic Patient Quality Of Life Between Invisalign And Fixed Appliances., Keith Christopher Nicholson

Electronic Theses and Dissertations

We aimed to examine differences in treatment impacts and quality of life between adult orthodontic patients with Invisalign and fixed appliances. Adults represent a burgeoning branch of orthodontics yet many prospective patients have been reluctant to pursue orthodontics due to concerns with treatment. It was hypothesized that removable aligners would be better tolerated by adult patients. Sixty-three adult patients (forty Invisalign, twenty-three fixed appliances) were recruited from private practice. The treatment groups were largely comparable although the braces group reported more frequent unplanned appointments and use of auxiliaries. The Invisalign group experienced less negative impacts and these differences were generally …


A Longitudinal View Of The Liberal Arts Curriculum A Decade After Merger : A Multiple Case Study Of Community Colleges In Connecticut, Kentucky, And Louisiana., Ann E. Norton Dec 2011

A Longitudinal View Of The Liberal Arts Curriculum A Decade After Merger : A Multiple Case Study Of Community Colleges In Connecticut, Kentucky, And Louisiana., Ann E. Norton

Electronic Theses and Dissertations

This dissertation is an examination of the state of the liberal arts curriculum in community colleges in three geographic regions of the United States. From a constructivist paradigm and using globalization theory as a theoretical framework, this multiple case study examined faculty work life and administrative processes related to curriculum change in merged community and technical colleges. Through an examination of research on globalization, mergers, and trends in the general education and liberal arts curriculum, a gap in the literature emerged in the studies of community college curriculums after merger. This dissertation considers whether the focus on workforce development and …


Characterization Of The Ai-2-Dependent Quorum Sensing Pathway In Aggregatibacter Actinomycetemcomitans., Elizabeth A. Novak Dec 2011

Characterization Of The Ai-2-Dependent Quorum Sensing Pathway In Aggregatibacter Actinomycetemcomitans., Elizabeth A. Novak

Electronic Theses and Dissertations

Quorum sensing in the oral pathogen Aggregatibacter actinomycetemcomitans is dependent upon the soluble signaling molecule AI-2, but it is not known how the initial detection of AI-2 is coupled to the downstream regulation of gene expression that confers complex phenotypes such as biofilm formation and iron acquisition. Here we show that expression of a two-component system encoded by qseBC is induced by AI-2 in A. actinomycetemcomitans and that induction of qseBC requires the AI-2 receptors, LsrB and/or RbsB. Inactivation of the sensor kinase gene qseC resulted in a significant reduction of in vitro biofilm growth and in vivo virulence using …


Pharmacists As Mid-Level Healthcare Providers And The Clinical Results Of A Pharmacist-Led Diabetes Disease Management Program., Benjamin Maurice Risner 1983- Dec 2011

Pharmacists As Mid-Level Healthcare Providers And The Clinical Results Of A Pharmacist-Led Diabetes Disease Management Program., Benjamin Maurice Risner 1983-

Electronic Theses and Dissertations

Advancements in medical therapy have augmented resources available to physicians to treat disease and, because of this, spending on prescription drugs has doubled in the past decade. Increasingly, clinical trials are demonstrating the benefits of aggressive disease management in reducing morbidity and mortality. Physicians treating patients with chronic conditions must balance the benefits of combination drug therapy against the risk of adverse drug events and drug interactions. For instance, evidence-based practice guidelines in patients with diabetes and multiple comorbidities require combination therapy in order to reduce morbidity and mortality. Patients with polymorbidity require the attention of multiple physicians, further fragmenting …


Efficacy Of Child Parent Relationship Therapy For Caregivers Of Children With Attachment Problems., Margaret Sergeant Dec 2011

Efficacy Of Child Parent Relationship Therapy For Caregivers Of Children With Attachment Problems., Margaret Sergeant

Electronic Theses and Dissertations

This dissertation examined the effectiveness of Child Parent Relationship Therapy (CPRT), a lO-week group model of Filial Therapy (FT), with caregivers of children with attachment problems. CPRT is an evidence-based treatment which is designed to strengthen relationship between caregiver and child. Research suggests that improvements in the relationship lead to changes in behavior and emotional regulation. Therapists treating children with attachment problems at Seven Counties Services, Inc. were concerned about the lack of interventions for children with attachment problems. This study used a randomized pre-test, post-test waitlist control group design to evaluate the effectiveness of CPRT for caregivers of children …


Embodied Consciousness In Non-Fiction Illness Narratives : A Phenomenological-Sociological Approach., Kathryn A. Jacobi Dec 2011

Embodied Consciousness In Non-Fiction Illness Narratives : A Phenomenological-Sociological Approach., Kathryn A. Jacobi

Electronic Theses and Dissertations

This dissertation uses a phenomenological and sociological lens to explore how non-fiction illness narratives help us understand how perception of the self is disrupted because of serious illness or injury. Specifically, I use the French philosopher, M. Merleau-Ponty's phenomenological thought concerning the body and the sociological perspective of medical sociologist, Arthur Frank and his types of narratives and how culture helps construct illness. I analyze the works of four different writers: Sarah Manguso, Oliver Sacks, Jean Dominique-Bauby, and Anatole Broyard. Chapter one serves as an introduction to the subject of illness writing and an overview of some of the material …


Hazardous Risk Management Survey And Inland Water Survey., Ayodeji Abimbola Lasisi Dec 2011

Hazardous Risk Management Survey And Inland Water Survey., Ayodeji Abimbola Lasisi

Electronic Theses and Dissertations

The trucking industry is the largest freight sector, making up about 70 percent of all domestic shipment in the United States and contributes greatly the American economy. About 10 billion tons of goods are shipped annually and of that, about 800,000 shipments of hazardous materials are transported in the United States each day by trucks, resulting in 300 million annual shipments (Federal Motor Carrier Security Administration). These hazardous materials (HazMat) range from relatively harmless products, such as hair spray and perfumes, to bulk shipments of gasoline by highway cargo tanks, to transportation of poisonous, explosive, and radioactive materials. The complexity …


Exploring The Scholar-Practitioner Gap In Personnel Selection Assessments : An Analysis Of Scholarly Versus Practitioner Literature., Whitney L. Martin 1977- Dec 2011

Exploring The Scholar-Practitioner Gap In Personnel Selection Assessments : An Analysis Of Scholarly Versus Practitioner Literature., Whitney L. Martin 1977-

Electronic Theses and Dissertations

Research suggests that a gap exists between scholarly findings and practitioner knowledge, beliefs, and practices in the Human Resource field, particularly in the area of employee selection (Deadrick & Gibson, 2007; Rynes, Giluk, & Brown, 2007). This study seeks to explore this gap relative to self-report selection assessments by examining practitioner-oriented versus scholarly literature. Articles published between January 2006 and September 2011 from two scholarly sources (Journal of Applied Psychology and Personnel Psychology) and two practitioner sources (HR Magazine and HR Executive) were reviewed, and 49 articles were selected for inclusion in analysis. Qualitative content analysis was used to analyze …


Adding Value To Graduate Education: The Comprehensive Examination, John L. Lindquist, Samuel E. Wortman, Charles A. Francis Dec 2011

Adding Value To Graduate Education: The Comprehensive Examination, John L. Lindquist, Samuel E. Wortman, Charles A. Francis

Department of Agronomy and Horticulture: Faculty Publications

Virtually all graduate study requirements for MS or PhD degrees include a written comprehensive and an oral exam, the latter most often a presentation of thesis or dissertation results. The written exam takes many forms, but the goals are to test the candidate for technical competence and affirm that the prior program course work has been effective in bringing the candidate to an acceptable level of understanding of the discipline in which she or he has been immersed. Although long accepted as a useful hurdle on the path to a degree, for some exceptional students who have already demonstrated competence …


Anesthesia Implications For Obstructive Sleep Apnea, Jessica Bratrud Dec 2011

Anesthesia Implications For Obstructive Sleep Apnea, Jessica Bratrud

Theses and Dissertations

Obstructive sleep apnea (OSA) affects 33% of the population. Eighty percent of those are undiagnosed (Downey, 2011). This number is expected to grow as our population gets older and more obese. Forty one million surgical procedures are performed in the United States each year, so this does affect the practice of Certified Registered Nurse Anesthetist’s (CRNA). OSA can lead to an array of complications including cardiac arrhythmias, coronary artery disease, hypertension, congestive heart failure, myocardial ischemia, cerebrovascular insufficiency, intracranial hypertension, gastroesophageal reflux disease, difficult intubation, and unanticipated admissions to the ICU. It is estimated that the average life span of …


"The Course Fit Us": Differentiated Instruction In The College Classroom, Mary Volesky Dosch Dec 2011

"The Course Fit Us": Differentiated Instruction In The College Classroom, Mary Volesky Dosch

Theses and Dissertations

Differentiated instruction is a learner-centered philosophy of teaching based on Tomlinson’s research, but stems from a constructivist belief espoused by Dewey, Piaget, and Vygotsky. Through consideration of three diagnostic areas: readiness, interests, and learning profiles, a teacher differentiates how diverse students access the material (content), how students make sense of the material (process), and how students demonstrate their learning (product).

Differentiated instruction has been used successfully at the elementary, middle, and high school levels showing quantitative improvements for diverse students. A limited number of qualitative studies on differentiated instruction exist at the college level, with even fewer quantitative studies.

The …


Optimal Charging Scheduling For Battery Electric Vehicles Under Smart Grid., Nur Dayana Abd Rahman Dec 2011

Optimal Charging Scheduling For Battery Electric Vehicles Under Smart Grid., Nur Dayana Abd Rahman

Electronic Theses and Dissertations

A projected high penetration of battery electric vehicles (BEV s) in the market will introduce an additional load in the electricity grid. Furthermore, uncontrolled BEV charging from residential users will exacerbate the existing peak load during evening hours. In this thesis, we propose two optimization models to alleviate the impact of extra demand from electric vehicles on the power grid. The first is a centralized charging scheduling model that coordinates the charging among BEV users under the goal of minimizing the total electricity cost for all users. The second model uses a decentralized agent-based approach to scheduling the BEV charging. …


An Investigation Of A Middle-High School System As A Learning Organization During The Implementation Of A Grade Eight To Grade Nine Transition Program., Carol Jean Christian Dec 2011

An Investigation Of A Middle-High School System As A Learning Organization During The Implementation Of A Grade Eight To Grade Nine Transition Program., Carol Jean Christian

Electronic Theses and Dissertations

This study investigated the impact of articulation activities and the extent to which the Grant County Kentucky school district operated as a learning organization during the implementation of a research-based middle to high school student transition initiative. Grant County is predominantly rural, located between Louisville, Kentucky and Cincinnati, Ohio, and includes the town of Williamstown, Kentucky. This study analyzed the Grant County schools' to determine if they functioned as a learning organization to the characteristics common to organizational learning, high reliability organizations and effective schools that included the characteristics of systemic process, leadership/vision, collaboration, and the use of measures. This …


Social-Emotional Behaviors In African-American Toddlers : The Role Of Risk And Protective Factors., Paulette Flores 1970- Dec 2011

Social-Emotional Behaviors In African-American Toddlers : The Role Of Risk And Protective Factors., Paulette Flores 1970-

Electronic Theses and Dissertations

The role of risk and protective factors in the family system on toddlers' social-emotional outcomes was examined by exploring the impact of depression and parenting strategies reported by female primary caregivers on toddlers' social-emotional competence and social-emotional problem behaviors. The goal of the research was to extend knowledge concerning how these risk and protective factors relate to social-emotional outcomes in an urban community sample of African-American families. Participants included 103 African-American women and toddlers. Hierarchical multiple regression analyses examined social-emotional problems and social-emotional competence. Results showed that female primary caregivers' depression and annual income were found to significantly predict ratings …


Comparing Engagement : Predicting African American Student Success At Predominately White Institutions And Historically Black Colleges And Universities., Christian A. Gamm Dec 2011

Comparing Engagement : Predicting African American Student Success At Predominately White Institutions And Historically Black Colleges And Universities., Christian A. Gamm

Electronic Theses and Dissertations

The study examined the relationship between African American student engagement and student background variables through the context of institution type. The study focused on the impact of student background variables (mother's level of education, father's level of education, enrollment status, sex, and grade point average) on student engagement, while taking into account institution types. Differences in engagement levels between different types of institutions were explored. Engagement variables were measured as benchmarks of effective educational practice gathered from the National Survey of Student Engagement. The results indicated that African American students had significantly higher grade point averages when attending Historically Black …


An Exploration Of Factors Affecting Participation In U.S. Health Information Exchange Networks : A Dual Network Participation Theory Based Case Study., Judah Thornewill 1961- Dec 2011

An Exploration Of Factors Affecting Participation In U.S. Health Information Exchange Networks : A Dual Network Participation Theory Based Case Study., Judah Thornewill 1961-

Electronic Theses and Dissertations

Background: Failure to achieve their goals of over 200 U.S. Health Information Exchange Networks (HIENs) which formed or operated in the U.S. from 2004 to 2010, lost time, capital and opportunity at individual, organizational and societal levels, and a lack of theory driven research on HIENs underscores a need for research to better understand factors affecting development of these kinds of large, complex collaborations. Purpose: A new dual network participation theory is developed by combining three source theories. The new theory supports integrated consideration of organizational and technological factors which affect participation by individuals and their affiliated organizations in complex …


Impact Of Spatial Correlation Of Fading Channels On The Performance Of Mimo Underwater Communication Systems, Jesse Cross, Jian Zhang, Yahong Rosa Zheng Dec 2011

Impact Of Spatial Correlation Of Fading Channels On The Performance Of Mimo Underwater Communication Systems, Jesse Cross, Jian Zhang, Yahong Rosa Zheng

Electrical and Computer Engineering Faculty Research & Creative Works

The spatial and intertap correlation matrices of fading channels are first estimated for underwater multiple input multiple output (MIMO) systems using real experimental data. We confirm that underwater MIMO channels exhibit strong spatial and temporal correlation. the bit error rate (BER) performance of the MIMO system at different correlation scenarios are also evaluated with computer simulation. at BER=0.01%, the required SNR of highly correlated channel is 5 dB higher than the i.i.d. channel. BER results of the experimental data also quantitatively show the performance degradation caused by the correlation. © 2011 IEEE.