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支持高数据速率,并且对无线信道衰落有足够鲁棒性,需要准确选择调制技术。目前OFDM调制看似最为适用的选择。文章提出了一种使用OFDM链接的数字信号处理系统结构,通过C++仿真,给出了本系统相应性能分析,特别对于没有编码和编码QPSK、QPSK和16QAM、单路径和多路径瑞利衰落,给出相应BERs与E_b/N_0性能曲线图。
Support for high data rates and robustness to wireless channel fading requires accurate selection of modulation techniques. The current OFDM modulation seems the most suitable choice. This paper presents a structure of digital signal processing system using OFDM link. Through C ++ simulation, the corresponding performance analysis of the system is given. Especially for uncoded and coded QPSK, QPSK and 16QAM, single path and multipath Rayleigh fading The corresponding BERs and E_b / N_0 performance curve.