A Flexible Structure of Convolutional Encoder for TCM

Jin Zijian.Zhu Xuelong.Lu Dajin

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A Flexible Structure of Convolutional Encoder for TCM

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- A Flexible Structure of Convolutional Encoder for TCM
- Acta Electronica Sinica Issue 7, Pages: 51-58(1992)
- 作者机构：
  
  1. 清华大学电子工程系
  2. 清华大学电子工程系北京 100084
- 作者简介：
- 基金信息：
- DOI：
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- Published：1992
- 稿件说明：
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[1]金子建,朱雪龙,陆大(纟金).一种实现高性能TCM的卷积编码器结构[J].电子学报,1992(07):51-58.

Jin Zijian.Zhu Xuelong.Lu Dajin. A Flexible Structure of Convolutional Encoder for TCM[J]. Acta Electronica Sinica, 1992, (7): 51-58.
[1]金子建,朱雪龙,陆大(纟金).一种实现高性能TCM的卷积编码器结构[J].电子学报,1992(07):51-58. DOI：

Jin Zijian.Zhu Xuelong.Lu Dajin. A Flexible Structure of Convolutional Encoder for TCM[J]. Acta Electronica Sinica, 1992, (7): 51-58. DOI：

摘要

本文提出了一种用于网格编码调制（TCM）技术的卷积编码器结构

并在三种不同的信号分配约束条件下对具有最大自由欧几里德距离的TCM码进行了搜索

结果表明:当状态数目较少时

Ungerboeck建议的规则是获得好码的前提条件

当状态增多时

可能存在有其它的信号分配形式达到最好的性能。

Abstract

A flexible structure of convolutional encoder is proposed for implementing trellis coded modulation （TOM）. Best codes are searched in accordance with different cons-traint rules on signal assignment. Results show that for Gaussian channels

when the number of trellis state is small

Ungerboeck’s rule is the necessary condition for obtaining the optimal codes

when the number increases

different rules may exist for achieving the best performance.

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Performance Analysis of TCM Orthogonal Sequences Spread Spectrum Multiple-Access Communication System

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Related Institution

Dept.of Telecom.Eng.Beijing University of Posts and Telecommunications

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