2002 · 109 citations · 5 references
EngineeringCommunicationElectrical EngineeringDigital CommunicationInformation TheoryWireless CommunicationsDigital Signal ProcessingDistortion AnalysisPower AmplifiersRate-distortion TheorySignal ProcessingWireless Channel ModelingBit Error RateBit-error Rate AnalysisLinear Power AmplifiersOrthogonal Frequency-division MultiplexingPower Amplifier NonlinearityPower Spectral DensityPower Spectral Density AnalysisWireless Communication Channels
Orthogonal frequency division multiplexing (OFDM) is an attractive technique for wireless communication applications. However, an OFDM signal has a large peak-to-mean envelope power ratio (PMEPR), which can result in significant distortion when transmitted through a nonlinear device, such as a transmitter power amplifier. We investigate, through extensive computer simulations, the effects of clipping and filtering on the performance of OFDM, including the power spectral density, the bit error rate, and the PMEPR. Our results show that clipping and filtering is a promising technique for the transmission of OFDM signals using realistic linear amplifiers.
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