本文選題：壓縮感知 + 擴頻接收機�。� 參考：《中南大學學報(自然科學版)》2017年08期

【摘要】：為了提升壓縮擴頻接收機的誤碼率性能,提出一種基于支撐集估計的改進壓縮擴頻接收機。改進的接收機首先估計稀疏信號的支撐集,然后通過求解閉合表達式代替原有的重構(gòu)算法來獲取發(fā)送的信息序列,從而達到降低系統(tǒng)誤碼率的目的。將改進的壓縮擴頻接收機應用于m W復合序列擴頻信號的接收,通過檢測m W復合序列的循環(huán)譜峰值來估計稀疏信號的支撐集。研究結(jié)果表明:對于m W復合序列,在低信噪比下,通過循環(huán)譜檢測能有效實現(xiàn)支撐集的估計,且改進的壓縮擴頻接收機比現(xiàn)有的壓縮擴頻接收機具有更好的誤碼率性能。
[Abstract]:In order to improve the BER performance of compressed spread spectrum receiver, an improved compression spread spectrum receiver based on support set estimation is proposed. The improved receiver first estimates the support set of the sparse signal and then obtains the transmitted information sequence by solving the closed expression instead of the original reconstruction algorithm so as to reduce the bit error rate (BER) of the system. The improved compression spread spectrum receiver is applied to receive the spread spectrum signal of MW composite sequence, and the support set of sparse signal is estimated by detecting the peak value of cyclic spectrum of MW composite sequence. The results show that for MW composite sequences, cyclic spectrum detection can effectively estimate the support set under low SNR, and the improved compression spread spectrum receiver has better BER performance than the existing compression spread spectrum receiver.
【作者單位】： 哈爾濱工程大學信息與通信工程學院;
【基金】：國家自然科學基金資助項目(61271263)~~
【分類號】：TN914.42

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