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Power Spectrum Prediction Of Amplified Dual-Band Lte-Advanced Signals, Xianzhen Yang
Power Spectrum Prediction Of Amplified Dual-Band Lte-Advanced Signals, Xianzhen Yang
Dissertations and Theses
In wireless communication, the nonlinearity of a radio frequency (RF) power amplifier is an important issue for power amplifier designers. Since the nonlinearity is generated by the properties of physical components, it is hard to avoid it in producing power amplifiers. Power amplifier designers should know about the nonlinearity in order to compensate for it.
A two-tone test is a relatively widely used method to measure the nonlinearity of a power amplifier, which means the third order intercept point (IP3) can be measured from the two-tone test. Through the two-tone test, researchers have proposed some formulae to present what the …
Nonlinearity Analysis And Predistortion Of 4g Wireless Communication Systems, Xiao Li
Nonlinearity Analysis And Predistortion Of 4g Wireless Communication Systems, Xiao Li
Dissertations and Theses
The nonlinearity of RF power amplifiers (PA) is one of critical concerns for RF designers because it causes spectral regrowth related to in-band and out-of-band spurious emissions control in communication standards. Traditionally, RF power amplifiers must be backed off considerably from the peak of their power level in order to prevent spectral regrowth. The digital predistortion (DPD) technique is being widely used for compensation of the nonlinearity of RF power amplifiers, as the high power efficiency becomes increasely important in wireless communication systems.
However, the latest generations of communication systems, such as Wi-Fi, WiMAX, and LTE, using wider bandwidth have …