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文中介绍了基于DAPSK调制的OFDM系统,并用一种次最佳的软解调算法替代了复杂的、基于最大似然估计的最佳算法。仿真结果表明,该算法与OFDM系统可以很好的结合在一起达到复杂度和性能的折中。
In this paper, the OFDM system based on DAPSK modulation is introduced, and a suboptimal soft demodulation algorithm is used to replace the complicated optimal algorithm based on maximum likelihood estimation. Simulation results show that the proposed algorithm and OFDM system can be well combined to achieve the compromise between complexity and performance.