Multilevel Coded Modulation Based on Superimposed LDPC Codes

WANG Xiu-ni; MA Xiao; BAI Bao-ming

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Multilevel Coded Modulation Based on Superimposed LDPC Codes

更新时间：2025-07-16

- Multilevel Coded Modulation Based on Superimposed LDPC Codes
- Acta Electronica Sinica Vol. 37, Issue 7, Pages: 1536-1541(2009)
- 作者机构：
  
  1. 中山大学信息科学与技术学院,广东,广州,510275
  2. 西安电子科技大学综合业务网国家重点实验室,陕西,西安,710071
  3. 中山大学信息科学与技术学院广东广州,510275
  4. 西安电子科技大学综合业务网国家重点实验室陕西西安,710071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.22
- Published：2009
- 稿件说明：
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WANG Xiu-ni, MA Xiao, BAI Bao-ming. Multilevel Coded Modulation Based on Superimposed LDPC Codes[J]. Acta Electronica Sinica, 2009, 37(7): 1536-1541.
DOI：

WANG Xiu-ni, MA Xiao, BAI Bao-ming. Multilevel Coded Modulation Based on Superimposed LDPC Codes[J]. Acta Electronica Sinica, 2009, 37(7): 1536-1541. DOI：

摘要

本文提出了一种多层叠加LDPC码编码调制系统.与传统的基于速率分配的多层编码调制技术相比

多层叠加编码调制系统具有很好的对称性和可扩展性.通过分析比较Turbo码译码算法与LDPC码的译码算法的复杂度

本文指出了多层叠加LDPC码编码调制系统具有译码简单

易于实现的优点.实验结果表明

多层叠加LDPC码编码调制系统可以在不牺牲带宽的同时获得较好的性能.

Abstract

In this paper

we propose a multilevel coded modulation system based on superimposed LDPC codes.Compared with traditional multilevel coding techniques

superimposed coded modulation system is symmetric among different layers and hence can be expanded easily.By comparing the decoding complexity of LDPC codes with that of turbo codes

we point out that the proposed superimposed LDPC coded modulation system can be easily designed and implemented.Simulation results show that superimposed LDPC coded modulation system has good performance without sacrificing bandwidth.

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