Chenbo Wang, Liang Hao, Baoji Wang, Jianhua Zhang, Yiming Lei
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Performance Analysis for Nonlinear MU-OFDM-DCSK Communication Systems
This paper investigates the bit error rate (BER) performance of the multiuser (MU) orthogonal frequency division multiplexing (OFDM) differential chaos shift keying (DCSK) system when the nonlinear distortion of power amplifiers is considered. Firstly, a nonlinear MU-OFDM-DCSK system model is established. Secondly, the close-form expression of BER performance is analytically derived. It is found that, BER function has a lower bound as operating point sweeps. Finally, the BER performance in linear and nonlinear systems are discussed when the system parameters sweep.
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