基于多符号检测和Turbo乘积码的PCM/FM遥测系统性能

计算机应用 ›› 2013, Vol. 33 ›› Issue (12): 3482-3485.

基于多符号检测和Turbo乘积码的PCM/FM遥测系统性能

王莉,袁福,向良军,郑林华

国防科学技术大学电子科学与工程学院，长沙 410073

收稿日期:2013-06-18 修回日期:2013-08-08 发布日期:2013-12-31 出版日期:2013-12-01
通讯作者: 王莉
作者简介:王莉(1988-),女,河南新郑人,硕士研究生,主要研究方向:通信信号处理;
袁福(1984-),男,云南富源人,博士研究生,主要研究方向:认知无线电、协同通信;
向良军(1975-),男,湖南汨罗人,讲师,博士研究生,主要研究方向:通信信号处理;
郑林华(1961-),男,湖南长沙人,教授,博士,主要研究方向:宽带无线通信、通信信号处理。

Performance of PCM/FM telemetry system based on multi-symbol detection and Turbo product code

WANG Li,YUAN Fu,XIANG Liangjun,ZHENG Linhua

College of Electronic Science and Engineering, National University of Defense Technology, Changsha Hunan 410073, China

Received:2013-06-18 Revised:2013-08-08 Online:2013-12-31 Published:2013-12-01
Contact: WANG Li

摘要/Abstract

摘要： 多符号检测(MSD)和Turbo乘积码(TPC)技术联合应用可以大幅提高脉冲编码调制/调频(PCM/FM)遥测系统性能。针对MSD算法计算复杂度高的问题提出了一种改进的MSD算法，可以有效降低计算复杂度；在TPC的传统Chase译码算法中通过简化软输入信息计算可以降低系统存储量。仿真结果表明，改进方法和传统的两种技术联合使用相比，虽然损失了约1.7dB解调增益，但仍提高PCM/FM信号解调性能约8dB，且算法复杂度低，存储量小，更适合硬件实现。

关键词: 脉冲编码调制/调频, 多符号检测, Turbo乘积码, Chase译码, 低复杂度, 低系统存储量

Abstract: Multi-Symbol Detection (MSD) and Turbo Product Code (TPC) can greatly improve the performance of PCM/FM (Pulse Code Modulation/Frequency Modulation) telemetry system. To solve the high computational complexity issues in MSD algorithm, an improved algorithm which reduced the computational complexity of MSD was proposed. Chase decoding algorithm for TPC also reduced the system memories by simplifying the calculation of the soft input information. The simulation results show that despite of 1.7dB loss, the improved algorithm still obtains about 8dB performance gain. Because of low-complexity and low system memories, it is more suitable for hardware implementation.

Key words: Pulse Code Modulation/Frequency Modulation (PCM/FM), Multi-Symbol Detection (MSD), Turbo Product Code (TPC), Chase decoding, low-complexity, low system memory

中图分类号:

TN911.22

王莉袁福向良军郑林华. 基于多符号检测和Turbo乘积码的PCM/FM遥测系统性能[J]. 计算机应用, 2013, 33(12): 3482-3485.

WANG Li YUAN Fu XIANG Liangjun ZHENG Linhua. Performance of PCM/FM telemetry system based on multi-symbol detection and Turbo product code[J]. Journal of Computer Applications, 2013, 33(12): 3482-3485.

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