| 摘要: |
| 针对空口波形非正交接入时在相邻信道产生干扰的问题，提出了一种阈值截断与压缩感知恢复(Threshold Truncation and Compressed Sensing Recovery,TTCSR)相结合的邻带干扰消除方法。TTCSR在发送端设置阈值截断信号，在接收端选取受噪声干扰小的可靠性观测向量，利用压缩感知的正交匹配追踪(Orthogonal Matching Pursuit,OMP)算法恢复截断失真信号。仿真结果表明，在正交频分复用系统(Orthogonal Frequency Division Multiplexing,OFDM)及其改进的加窗系统(Windowing-OFDM,W-OFDM)中使用本算法后，可以很好地处理空口波形非正交接入的邻带干扰，明显降低系统的误码率。 |
| 关键词: 5G 非正交接入系统 邻带干扰 压缩感知 |
| DOI： |
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| 基金项目: |
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| A method for eliminating adjacent band interference of non-orthogonal access waveform |
| SHAO Kai,LI Hui |
| (a.School of Communication and Information Engineering;b.Chongqing Key Laboratory of Mobile Communications Technology,Chongqing University of Posts and Communications,Chongqing 400065,China) |
| Abstract: |
| To solve the problem of adjacent channels interference(ACI) when the air interface waveform is non-orthogonal access,a method to eliminate adjacent band interference is proposed,which combines threshold truncation and compressed sensing recovery(TTCSR).TTCSR sets a threshold to cut the signal at the sending end,selects a reliable observation vector that is less affected by noise at the receiving end,and uses the orthogonal matching pursuit(OMP) algorithm of compressed sensing to recover the truncated distorted signal.The simulation results show that the method can handle the adjacent band interference of orthogonal access air waveforms well,and significantly reduces the bit error rate of the system in orthogonal frequency division multiplexing(OFDM) and its improved windowing-OFDM(W-OFDM). |
| Key words: 5G non-orthogonal access system adjacent band interference compressed sensing |
