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时间频率二维重叠复用系统及其快速检测算法

Keywords: 频谱效率,调制技术,重叠复用

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Abstract:

为了提高通信系统的频谱效率,提出了一种新的时间频率二维重叠复用系统,并在此基础上研究了针对这种通信系统的一种快速检测算法.实验结果表明,与传统的最大似然序列估计检测算法相比,该算法在牺牲部分性能的条件下,使得检测速度得以大幅提高,从而推动了时间频率二维重叠复用系统的实用化进程,而且其性能在较高信噪比时仍然优于相同频谱效率的QAM调制.这说明,采用相互重叠的信号复用传输方式直接提高传输速率比使用同样频谱效率的高阶QAM调制能带来更大的增益.

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