DOI: 10.3724/SP.J.1087.2013.03482

Journal of Computer Applications (计算机应用) 2013/33:12 PP.3482-3485

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

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 1.7 dB loss, the improved algorithm still obtains about 8 dB 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

ReleaseDate:2014-07-21 16:59:14