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中文摘要：
针对MIMO-TDCS系统频谱感知中因数据量大而较难实现的难题,提出一种利用压缩感知的MIMO-TDCS频谱感知方法。在电磁环境一致的情况下,收发两端分别用远低于乃奎斯特的采样速率对电磁环境信号进行采样,然后用正交匹配追踪算法对信号进行重构,并通过二元门限进行状态判决。实验结果证明,运用压缩感知技术能大大减少电磁环境宽带信号的快速采样和处理难度,在选取合理测量值的情况下能够准确恢复信号,进而能有效地检测和剔除干扰,达到抗干扰的目的。
英文摘要：
A spectrum sensing of MIMO-TDCS based on compressed sensing is proposed to solve the problem of difficult to realize because of large volume of data in MIMO-TDCS spectrum sensing. When the electromagnetic environment conditions are same, both sides are on sampling of the electromagnetic environment signal with the sampling rate wicth is much lower than Nequist. And then signal is reconstructed by the orthogonal matching pursuit（OMP） and is adjudged by bipolar threshold. Simulations show that difficulty of sampling and disposal of electromagnetic environment signal are reduced with compressed sensing. Environment signal is accurate recovery under reasonable measure -number and interferes are detected and rejected availably.
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