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利用时频重叠信号(Overlapped Hybrid-Division Multiplexing,OVHDM)实现高频谱效率数据传输,性能优于多电平调制方案.介绍了OVHDM信号模型以及最佳检测算法.为了降低检测的复杂度,提出了联合软干扰消除的序列检测算法——SIC-SE:软干扰消除后的各子载波数据流,在序列检测前首先通过基于快速矩阵逆的有限冲激响应滤波器.该算法的检测复杂度远低于最大似然检测算法,性能优于传统的软干扰消除算法.仿真表明,基于该检测算法的编码OVHDM系统性能优于使用相同信道编码的QAM-OFDM系统.
In order to reduce the complexity of detection, the OVHDM signal model and the optimal detection algorithm are introduced to realize the high-frequency spectral efficiency data transmission using Overlapped Hybrid-Division Multiplexing (OVHDM) Combined with soft interference cancellation sequence detection algorithm - SIC-SE: soft interference cancellation sub-carrier data stream, before the detection of the sequence through the fast matrix inverse finite impulse response filter. The detection complexity of the algorithm far Which is lower than the maximum likelihood detection algorithm and outperforms the traditional soft-interference cancellation algorithm.The simulation shows that the OVHDM system based on this detection algorithm outperforms the QAM-OFDM system using the same channel coding.