深空遥测系统中信道编码简述

由于深空信道的极低的信噪比,具有高增益的信道编码技术是深空遥测系统必不可少的环节。总结了深空通信领域中曾经使用的或可能使用的各种典型的信道编码包括卷积码、级联码、TURBO码和LDPC码方式,并对各种编译码方式的特点进行比较,给出其性能仿真。最后,对深空通信信道编码技术(包括TURBO接收机、LDPC码的应用以及编码调制技术)未来发展作展望。

Channel Coding in Deep Space Telemetry Systems

The signal to noise ratio in the deep space communication channel is so low that high quality channel coding scheme is essential for deep space comnunication systems.In the paper,some primary channel coding schemes that have been used or to be used in deep space communication systems are outlined and discussed,i.e.reed-slomon code concatenated with convolutional code,turbo code and LDPC code respectively.The simulation performance of these coding are presented in figures.At last,the research trends of deep space communication channel coding are also proposed,which include turbo receiver,application of LDPC code and coded modulation technique.