QAM modulations with q-ary turbo codes

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作者：张豫伟;王新梅;;;;;;;

作者机构：Department of Klectronic Engineering;Shanghai Jiao Tong University;Shanghai 200052;China;Department 1;Xidian University;Xi’an 710071;China; 来源：中国科学年：1997 卷：000 期：001 页码：P.64-70 页数：7

中图分类：TN911.22 正文语种：CHI

关键词：error control coding turbo codes.

摘要：A new concept of q-ary (q = 2’) turbo codes and the corresponding decoding aglorithm are presented. With QAM modulations, the proposed algorithm avoids the information loss caused by a pragmatic approach usually used for a binary code to split the channel measurement information into coding bits. So better performance is achieved. Because of the parallel operation property, the decoding can be speeded up by the proposed algorithm. In addition, a method to reduce the average number of iterations is also considered.

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