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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 …