Joint Source /Channel Coding Modulation Algorithm Based on TTCM

GUO Dong-liang; SHU Feng; WU Le-nan

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Joint Source /Channel Coding Modulation Algorithm Based on TTCM

更新时间：2025-07-16

- Joint Source /Channel Coding Modulation Algorithm Based on TTCM
- Acta Electronica Sinica Vol. 31, Issue 7, Pages: 1092-1094(2003)
- 作者机构：
  
  东南大学无线电工程系,江苏,南京,210096
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN919.3
- Published：2003
- 稿件说明：
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GUO Dong-liang, SHU Feng, WU Le-nan. Joint Source /Channel Coding Modulation Algorithm Based on TTCM[J]. Acta Electronica Sinica, 2003, 31(7): 1092-1094.
DOI：

GUO Dong-liang, SHU Feng, WU Le-nan. Joint Source /Channel Coding Modulation Algorithm Based on TTCM[J]. Acta Electronica Sinica, 2003, 31(7): 1092-1094. DOI：

摘要

提出了一种具有高频带利用率和高重建质量的联合编码调制算法.采用Turbo码网格编码调制TTCM作为编码调制(CM)方案

按"最小化端到端失真"准则最优化设计信源解码器

直接利用TTCM解码输出的软判决值进行信源译码.仿真表明

相对于硬判决分离译码

本文算法将重建信号的信噪比提高了约2dB.

Abstract

A joint source/channel coding modulation algorithm based on TTCM (Turbo Trellis-Coded Modulation) is presented

which achieve bandwidth-efficient and high reconstructive quality.The source decoder is optimized by minimizing the end-to-end system distortion.The soft output values of TTCM decoder are applied directly to the designed optimal source decoder.Simulation results show that compared with the system with hard decoding

the proposed algorithm can objectively gain 2 dB improvement of decoded source in terms of SNR.

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