A Kind of MSD Performance Compensation Method Based on the Strategy of Sliding

Dong Xu Zhu; Gang Fu; Qian He

doi:10.4028/www.scientific.net/AMR.989-994.2360

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IBC-Based Authentication Protocols and a Method of Data Sharing for Cloud Systems
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A Kind of MSD Performance Compensation Method Based on the Strategy of Sliding
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 989-994A Kind of MSD Performance Compensation Method...

A Kind of MSD Performance Compensation Method Based on the Strategy of Sliding

Abstract:

The signal noise ratio (SNR) of telemetry signals is low in the environment of reentry telemetry, MSD(Multi-Symbol Detection) technology can effectively improve PCM/FM telemetry signal demodulation performance. In view of the problem that maximum likelihood value is misjudged leaded by the noise in the process of reentry and doppler causing serious distortion of signal phase. A performance compensation method of MSD based on sliding strategy is researched: A MSD operation with N-1 element overlap before each MSD operation, where the each symbol sliding strategy sliding the length of 1 symbol. The simulation and test results verify the effectiveness of the improved algorithm.