Performance of Variable Coded Modulations over a Nonlinear Channel for VCM Protocol Red Book

Fong, Wai ; Lee, Wing

关键词: CODING;    MODULATION;    NONLINEARITY;    SIGNAL ENCODING;    SIGNAL TO NOISE RATIOS;    PROTOCOL (COMPUTERS);    COMPUTERIZED SIMULATION;   

RP-ID  :  GSFC-E-DAA-TN61191

学科分类：工程和技术（综合）

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

This presentation provides a summary of the results obtained from a study which evaluates the performance of variable coded modulations specified in the "Variable Coded Modulation Protocol" CCSDS Red Book, over a nonlinear channel that is currently on the CCSDS Blue Book track. The objectives are to perform simulation that identifies the operating signal-to-noise-power ratio required to achieve a codeword error rate of 1e-4 over the specified nonlinear channel for various modulations (i.e. BPSK, QPSK, 8-PSK) and LDPC coding schemes, and compare against performance over an ideal additive white Gaussian channel. We select a only subset of operating modes to perform the analysis which are based on a number of mitigation techniques to combat the nonlinear distortions. Specifically, transmitter centroidal pre-distortion, phase post-distortion and receiver mean phase estimation are analyzed in this study.