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

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. 7 dB loss,the improved algorithm still obtains about 8 dB performance gain. Because of lowcomplexity and low system memories,it is more suitable for hardware implementation.