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Full-Text Articles in Engineering

New Analytical Bounds On The Probability Of Code-Word Error For Convolution Codes With Viterbi Decoding, Shweta Tomar Dec 2011

New Analytical Bounds On The Probability Of Code-Word Error For Convolution Codes With Viterbi Decoding, Shweta Tomar

All Theses

New analytical bounds are developed for the probability of code-word error in a communication system with convolutional coding and soft-decision Viterbi decoding. The bounds are applicable to communications in channels with asynchronous interferers which are modeled as independent, partial-time white Gaussian interference sources. This model is often used in simulations to reflect the circumstances encountered in many packet radio communication networks. The new results include both purely analytical bounds and offline-simulation-aided bounds that permit implementation of accurate communication-link models with much lower online computational and storage requirements than are required with traditional Monte Carlo simulations of link performance. They significantly …


Improved Closed-Form Bounds On The Performance Of Convolutional Codes With Correlated Rayleigh Fading, Dwight Hutchenson May 2008

Improved Closed-Form Bounds On The Performance Of Convolutional Codes With Correlated Rayleigh Fading, Dwight Hutchenson

All Theses

New bounds on the probability of bit error are presented for a coded communication system with binary antipodal modulation and soft-decision maximum-likelihood decoding over a correlated Rayleigh-fading channel. The bounds are closed-form expressions in terms of the code's transfer function; they are illustrated by considering a system using convolutional encoding. A long-standing conjecture regarding the worst-case error event in correlated Rician fading is proven for the special case of correlated Rayleigh fading, and it is used in the development of some of the new bounds. The bounds are shown to be tighter than previously developed closed-form bounds for communications using …