可变长符号的联合信源信道与多维调制编译码方法研究

项目名称： 可变长符号的联合信源信道与多维调制编译码方法研究

项目编号： No.61271282

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 张灿

作者单位： 中国科学院大学

项目金额： 84万元

中文摘要： 针对深空通信和移动通信等资源有限网络，存在大尺度路径损耗、小尺度衰落和多径效应的恶劣空间传输环境，将香农信源、信道编码理论和多维调制相结合，联合优化设计,建立可变长符号的联合信源信道与调制的迭代编译码模型，用信源冗余增加信道码的最小汉明距离和用变长符号增加星座点间的欧式距离，使信源可变长码的剩余冗余在信道译码和在星座点上映射得到充分的利用，可以有效增加抗误码率。研究可变长符号的联合信源信道与调制编译码方法，设计并开发面向资源受限网络的联合信源信道与2D-QPSK-TCM调制编译码算法，为我国的联合信源信道与调制编译码提供理论依据和技术支持。

中文关键词： 联合信源信道编译码；编码调制；多维调制；比特交织编码调制迭代译码；

英文摘要： Based on the characteristics of deep space communication and mobie radio systems in resource constraint networks, there are the large scale loss, small scale fading and multi-path, In order to adapt various space communication environment constraints, joint coding/decoding and Multimodulation realizes the cooperation of Shannon source channel coding and Multimodulation, which realizing joint optimization to set up variable-length symbol joint iterative coding decoding architecture. So it is possible to increase the minimum Hamming distance between the seguence of channel codes and the minimum Euclidean distance between the variable-length symbol of signal constellation, which employing the source priori information from VLC tree as well as the signal constellation extrinsic information to obtain optimum decoding, do research on the joint source channel and modulation coding/decoding approach based on variable-length symbols, and the joint source channel and 2D-QPSK-TCM coding/decoding algorithm is proposed for resource constraint networks . Theoretically this research can guide the development of joint source channel and Multimodulation coding /decoding in our country.

英文关键词： Joint source-channel en/decoding；coded modulation；multidimensional modulation；BICM-ID；