A Real Time Coding Cooperation Scheme with on Frame Delay

牛兰奇 1; 2; 张太镒 1; 张璟 1

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A Real Time Coding Cooperation Scheme with on Frame Delay

更新时间：2025-12-08

- A Real Time Coding Cooperation Scheme with on Frame Delay
- Vol. 43, Issue 2, Pages: 63-66(2009)
- 作者机构：
  
  1. 西安交通大学电子与信息工程学院,西安,710049
  2. 西安理工大学自动化与信息工程学院,西安,710048
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911
- Online First：10 February 2009，
  
  Published：2009
- 稿件说明：
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牛兰奇 1, 2, 张太镒 1, et al. A Real Time Coding Cooperation Scheme with on Frame Delay[J]. 2009, 43(2): 63-66.
DOI：

牛兰奇 1, 2, 张太镒 1, et al. A Real Time Coding Cooperation Scheme with on Frame Delay[J]. 2009, 43(2): 63-66. DOI：

摘要

为了解决码分多址(CDMA)和频分多址(FDMA)编码协作系统中协作用户之间存在的冲突和碰撞问题

提出了一种采用帧延迟的实时编码协作方案.该方案将用户信道码字分割为2部分

如果某个用户对协作伙伴前一帧数据成功译码

则将协作伙伴前一帧码字的第2部分冗余作为协作信息传输

否则传输自身当前帧码字的第2部分冗余

从而实现实时编码协作.此外

还利用紧联合界技术推导了新方案的误比特率估计公式

给出了数值计算结果. 数值结果表明:采用帧延迟的实时编码协作方案能够很好地解决CDMA和FDMA编码协作系统中协作用户之间的碰撞问题

但会有少量的性能损失

对于0 dB互易用户间信道

性能损失为1.2 dB.

Abstract

To solve the collision problem between the partners in code-division multiple access(CDMA)and frequency-division multiple access(FDMA)coding cooperative systems

a new real time coding cooperation scheme is proposed with frame delay. The scheme partitions the user channel codeword into two parts. If one user decodes successfully his partner's previous frame data

he then transmits the second redundancy of the partner's previous frame as cooperative information

otherwise he transmits the second redundancy of his own codewords

so that the real coded cooperation is implemented. Furthermore

the bit-error-rate evaluation formula of the new scheme is derived using the tightening union bound techniques. Numerical results show that the real coding cooperation scheme with frame delay can solve the collision problem between the partners in CDMA and FDMA coding cooperative systems very well

but the proposed scheme would result in a little performance loss of 1.2 dB for 0 dB reciprocal inter-user channels.

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Keywords

references

SENDONARIS A, ERKIP E, AAZHANG B. User cooperation diversity,part I: system description [J]. IEEE Transactions on Communications, 2003, 51(11):1927-1938.

SENDONARIS A, ERKIP E, AAZHANG B. User cooperation diversity, part II: implementation aspects and performance analysis [J]. IEEE Transactions on Communications, 2003, 51(11):1939-1948.

LANEMAN J N, TSE D N C, WORNELL G W. Cooperative diversity in wireless networks: efficient protocols and outage behavior [J]. IEEE Transactions on Information Theory, 2004,50(12):3062-3080.

HUNTER T E, SANAYEI S, NOSRATINIA A. Outage analysis of coded cooperation[J]. IEEE Transactions on Information Theory, 2006,52(2):375-391.

HUNTER T E, NOSRATINIA A. Diversity through coded cooperation [J]. IEEE Transactions on Wireless Communications, 2006, 5(2): 283-289.

ZHANG Jingqiao, LEE H. Performance analysis on coded system over quasi-static(MIMO)fading channels [C]∥2005 IEEE International Conference on Communications. Piscataway,NJ, USA: IEEE, 2005: 800-804.

NGO V, PARK S. Tightening union bound by applying Verdu theorem for LDPC [C]∥2003 IEEE Proc on Personal, Indoor and Mobile Radio Communications. Piscataway,NJ, USA: IEEE, 2003: 420-423.

王琳, 徐位凯. 高效信道编译码技术及其应用[M]. 北京:人民邮电出版社, 2007.

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