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The high Power Amplifier (PA) dominates the power consumption in LTE transceiver systems in macro base stations and requests focusing the energy efficiency improvements on this device. In this paper, the impact of the nonlinearities on the amplified multicarrier signal is analyzed considering both linearization and Peak-to-Average Power Ratio (PAPR) reduction techniques. Therefore, we provide the...
This letter deals with the analysis of the memory effects of the power amplifier (PA) on multicarrier signals. We analytically derive the expressions of the error vector magnitude (EVM) of amplified signals jointly considering a memory polynomial PA model and clipping effects. We provide analytical EVM expressions that depend on the PA coefficients, PA order, and memory depth as well as the clipping...
This paper aims at presenting a comprehensive analysis of time-reversal (TR) as a precoding scheme for wireless communications. As exposed in the paper, TR can be viewed as a particular spatial filtering scheme with some strong commonalities with more conventional beamforming strategies used in large-scale antenna systems (LSAS). Our goal is to compare the behavior and the performance of the TR-based...
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