分组编码调制新进展  

Up-to-Data developments of block coded modulation

作　　者：骆亚娟[1] 鞠德航[2] 

机构地区：[1]西安电子科技大学通信工程学院,陕西西安710071 [2]航天工业总公司504所,陕西西安710000

出　　处：《西安电子科技大学学报》1999年第6期811-815,共5页Journal of Xidian University

基　　金：国家自然科学基金

摘　　要：１９８２ 年，Ｕｎｇｅｒｂｏｅｃｋ 提出了将卷积码与调制一体化的网格编码调制（ＴＣＭ）方案，这种方案能够在不增加系统带宽与发射功率的前提下，提高信息传输的可靠性．作为ＴＣＭ 并行分支的分组编码调制（ＢＣＭ）方案是由Ｉｍ ａｉ与Ｈｉｒａｋａｗ ａ 于１９７７ 年提出的，它是将分组码与调制一体化，采用这种方案构造出的ＢＣＭ 码有许多优于ＴＣＭ 码之处．文章简要叙述了ＴＣＭ 技术提出的背景，重点论述了ＢＣＭ 码的一般构造方法，以及ＢＣＭ码在纠错抗干扰方面的发展动向，给出了目前ＢＣＭTrellis Coded Modulation is a scheme proposed by Ungerboeck in 1982 by considering coding and modulation as an integration, which can be used to improve the reliability of the information transmission without bandwidth expansion or power increase. As a parallel branch of TCM, Block Coded Modulation (BCM) was proposed by Imai and Hirakawa in 1977. It is the combination of block codes and modulation. Codes constructed by this method are called BCM codes, which have many advantages over TCM codes. In this paper, the background of TCM technology proposed is roughly described, with emphasis on the general construction method of BCM codes and its developing trend in error control. Finally, some proplems on BCM which remain to be solved are presented.

关 键 词：分组编码调制 信息传输 数字通信系统 

分 类 号：TN911[电子电信—通信与信息系统]