快衰落信道中的分布式差分空时编码传输方案

王磊; 陈志刚

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快衰落信道中的分布式差分空时编码传输方案

更新时间：2025-07-09

- 快衰落信道中的分布式差分空时编码传输方案
- A Coding Transmission Scheme with Distributed Differential Space-Time for Fast Fading Channels
- 西安交通大学学报 2012年46卷第4期页码：77-82
- 作者机构：
  
  西安交通大学电子与信息工程学院,西安,710049
- 作者简介：
- 基金信息：
  
  : 2011-09-23. 作者简介: 王磊(1977-),女,博士,讲师. 基金项目: 国家自然科学基金资助项目(60902045);中芬国际合作项目(2010DFB10570);国家科技重大专项资助项目(2010ZX03003-004)
- DOI：
  中图分类号： TN929.5
- 网络首发：2012-04-10，
  
  纸质出版：2012
- 稿件说明：
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王磊, 陈志刚. 快衰落信道中的分布式差分空时编码传输方案[J]. 西安交通大学学报, 2012,46(4):77-82.

A Coding Transmission Scheme with Distributed Differential Space-Time for Fast Fading Channels[J]. 2012, 46(4): 77-82.
王磊, 陈志刚. 快衰落信道中的分布式差分空时编码传输方案[J]. 西安交通大学学报, 2012,46(4):77-82. DOI：

A Coding Transmission Scheme with Distributed Differential Space-Time for Fast Fading Channels[J]. 2012, 46(4): 77-82. DOI：

摘要

针对分布式差分空时编码(DDSTC)在时间选择性快衰落信道中出现误码率平台的问题

提出了一种新的有效减小信号帧长的DDSTC传输方案(RFL-DDSTC)来抵抗快衰落信道的影响.该方案在中继节点处通过采用T个正交向量

将DDSTC在T个符号周期内的信号合并到1个符号周期内进行转发

使得DDSTC信号变为具有单位帧长的短信号.在目的节点

再对合并后的RFL-DDSTC信号用T个正交向量进行解调

即可还原出原始的DDSTC信号.该方案由于大大缩短了DDSTC信号的帧长

因而可以有效减小信道快衰落带来的不利影响

显著地降低了DDSTC性能曲线中的平台.仿真结果表明

在发射功率为30 dB时

RFL-DDSTC方案可将DDSTC的误码率平台降低一个数量级以上.

Abstract

A new DDSTC scheme with reduced frame length

named as RFL-DDSTC

is proposed to solve the problem that the performance of distributed differential space-time coding(DDSTC)suffers from an irreducible error floor in time-selective fast fading channels. The proposed RFL-DDSTC scheme uses T orthogonal vectors at relay nodes to combine the DDSTC signals in T symbol periods into one symbol period so that DDSTC can be turned into a shorter signal with unit length Then

the T orthogonal vectors are used at the destination node to demodulate the compressed RFL-DDSTC signals

and the original DDSTC signals are resumed. Since the frame length of DDSTC is greatly reduced

the proposed RFL-DDSTC is highly effective in mitigating the impact of channel fast fading on its performance

and the performance error floor has degraded significantly. Simulation results show that RFL-DDSTC can degrade the error floor of DDSTC for more than ten times at 30 dB.

关键词

Keywords

references

JING Yindi, JAFARKHANI H. Using orthogonal and quasi-orthogonal designs in relay networks [J]. IEEE Transactions on Information Theory, 2007, 53(11): 4106-4118.

JING Yindi, JAFARKHANI H. Distributed differential space-time coding for wireless relay networks [J]. IEEE Transactions on Communications, 2008, 56(7): 1092-1100.

ORRIER F, LEQUEU E. Differential distributed Cayley space-time codes [J]. IEEE Transactions on Wireless Communications, 2009, 8(7): 3808-3814.

RAJAN C S, RAJAN B S. Algebraic distributed differential space-time codes with low decoding complexity [J]. IEEE Transactions on Wireless Communications, 2008, 7(10): 3962-3971.

高洋,葛建华,谢大平. 双差分协作传输的误码率性能分析和最佳功率分配[J]. 电子科技大学学报,2011,40(2):185-191.

GAO Yang, GE Jianhua, XIE Daping. SER performance analysis and optimum power allocation for double differential cooperative transmission [J]. Journal of University of Electronic Science and Technology of China, 2011,40(2):185-191.

高贞贞,朱世华,徐静. 放大转发异步协作通信系统中的差分空时频传输方案 [J]. 西安交通大学学报,2009,43(6):62-66.

GAO Zhenzhen, ZHU Shihua, XU Jing. Differential space-time-frequency transmission for amplify-and-forward asynchronous cooperative communications [J]. Journal of Xi'an Jiaotong University, 2009,43(6):62-66.

高洋,葛建华. 一种非恒定幅度调制的差分空时协作方案[J]. 华中科技大学学报,2009,37(7):22-26.

GAO Yang, GE Jianhua. A cooperation scheme for nonconstant modulus-modulated differential space-time coding [J]. Journal of Huazhong University of Science and Technology, 2009,37(7):22-26.

LIN Dingbing, CHIANG Pinghung, LI Hsuehigh. Performance analysis of two-branch transmit diversity block-coded OFDM systems in time-varying multipath Rayleigh-fading channels [J]. IEEE Transactions on Vehicular Technology, 2005, 54(1): 136-148.

HOCHWALD B, MARZATTA T L, PAPADIAS C B. A transmitter diversity scheme for wideband CDMA systems based on space-time spreading [J]. IEEE Journal on Selected Areas in Communications, 2001, 19(1): 48-60.

ACOLATSE K, BAR-NESS Y. Performance analysis of space-time spreading DS-CDMA systems over fast-fading general time-correlated channels [J]. IEEE Communications Letters, 2010, 14(11):993-995.

ZHENG F C, BURR A G. Signal detection for non-orthogonal space-time block coding over time-selective fading channels [J]. IEEE Communications Letters, 2004, 8(8): 491-493.

JING Yindi, HASSIBI B. Distributed space-time coding in wireless relay networks [J]. IEEE Transactions on Wireless Communications, 2006, 5(12):3524-3536.

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