一种波束成形的分组空时编码系统检测算法

J4 ›› 2009, Vol. 36 ›› Issue (4): 649-654.

一种波束成形的分组空时编码系统检测算法

黑永强¹;李晓辉¹;易克初¹;杨宏²

(1. 西安电子科技大学综合业务网理论及关键技术国家重点实验室，陕西西安 710071；
2. 中国空间技术研究院总体部，北京 100094)

收稿日期:2008-08-31 出版日期:2009-08-20 发布日期:2009-09-28
通讯作者: 黑永强
基金资助:
国家自然科学基金资助(60702060,60572148);高等学校学科创新引智计划资助(B08038)

Beamforming detector for group space-time coded systems

HEI Yong-qiang¹;LI Xiao-hui¹;YI Ke-chu¹;YANG Hong²

(1. State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an 710071， China;
2. Chinese Academy of Space Tech. Quality Tech. Dept., Beijing 100094， China)

Received:2008-08-31 Online:2009-08-20 Published:2009-09-28
Contact: HEI Yong-qiang

摘要/Abstract

摘要：

根据分组空时编码系统的特性，提出了一种新的基于波束成形的检测算法．发射端采用酉矩阵将数据映射到空间正交的波束方向上，通过接收端波束方向上的匹配滤波，各数据分块所获得的增益为信道矩阵在其波束方向上的投影之和，波束选择通过最大化所有数据分块最小增益，从而有效地提高了系统的分集增益．进一步提出一种多速率分组空时编码的设计方案．理论分析和仿真结果表明，这种算法可获得更好的容量和误码性能，同时具有较低的译码复杂度．

关键词: 波束成形, 分组空时编码, 波束选择, 分集增益

Abstract:

According to the characteristic of group space-time coded systems, a new detecting algorithm based on beamforming is proposed. By utilizing the unitary matrix, the transmitter decouples the input signal into spatial orthogonal beam directions with the matched filters in beam directions in the receiver, and the gain obtained by each data block can be equivalent to the sum of the projection from the channel matrix to the corresponding beam directions. Beam selection is adopted to maximize the minimum gains of all the blocks, which can improve the system diversity gain efficiently. Moreover, a multiple-rate group space-time coded scenario is presented. Theoretical analysis and simulation results reveal that the proposed algorithm has a better capacity and error performance with lower decoding complexity.

Key words: beamforming, group space-time code, beam selection, diversity gain

中图分类号:

TN929.5

黑永强;李晓辉;易克初;杨宏. 一种波束成形的分组空时编码系统检测算法[J]. J4, 2009, 36(4): 649-654.

参考文献

［1］Dai L, Letaief K B. An Efficient Detector for Combined Space-time Coding and Layered Processing［J］. IEEE Trans on Communications, 2005, 53(9): 1438-1442.
［2］Park S H, Lee I. Unitary Precoding Techniques Based on Transmit-MRC for MIMO Wireless Systems ［C］//IEEE International Conference on Communications (ICC'08). Beijing: IEEE, 2008: 1215-1219.
［3］Stankovic V, Haardt M. Generalized Design of Multi-User MIMO Precoding Matrices［J］. IEEE Trans on Wireless Communications, 2008, 7(3): 953-961.
［4］Choi L U, Murch R D. A Transmit Preprocessing Technique for Multiuser MIMO Systems Usinga Decomposition Approach［J］. IEEE Trans on Wireless Communications, 2004, 3(1): 20-24.
［5］Ariyavisitakul S L, Zheng J, Kim J. Subspace Beamforming with Capacity-Balancing Channel Decomposition［C］//IEEE International Symposium on Information Theory (ISIT 2008). Canada: IEEE, 2008: 1012-1015.
［6］Chen Runhua, Jr Heath R W, Andrews J G. Transmit Selection Diversity for Unitary Precoded Multiuser Spatial Multiplexing Systems With Linear Receivers［J］. IEEE Trans on Signal Processing, 2007, 55(3): 1159-1171.
［7］Tarokh V, Seshadri N, Calderbank A R. Space-time Codes for High Data Rate Wireless Communication: Performance Criterion and Code Construction［J］. IEEE Trans on Inf Theory, 1998, 44(2): 744-765.
［8］Tarokh V, Jafarkhani H, Calderbank A R. Space-time Block Codes from Orthogonal Designs［J］. IEEE Trans on Inf Theory, 1999, 45(5): 1456-1467.
［9］Liang X. Orthogonal Designs with Maximum Rates［J］. IEEE Trans on Inf Theory, 2003, 49(10): 2468-2503.
［10］Golub G H, Van Loan C F. Matrix Computations［M］. 3rd ed. Baltimore: The John Hopkins Univ Press, 1996.
［11］Coppersmith D, Winograd S. Matrix Multiplication Via Arithmetic Progressions［J］. J Symbolic Comput, 1990, 9(3): 251-280.

[1]	赫彬,苏洪涛. 一种多目标与多基地雷达之间的博弈策略[J]. 西安电子科技大学学报, 2021, 48(2): 125-132.
[2]	施焘,韩雪峰,陈文. 一种高铁场景下的接收机设计方案[J]. 西安电子科技大学学报, 2020, 47(6): 30-36.
[3]	仲伟志, 徐磊, 朱秋明, 陈小敏, 周建江. 面向天线互耦效应抑制的波束预编码算法[J]. 西安电子科技大学学报, 2018, 45(6): 80-85.
[4]	王青波, 窦高奇, 高俊. 预编码增益优化的预编码叠加训练设计[J]. 西安电子科技大学学报, 2018, 45(6): 99-105.
[5]	唐俊林;曾媛;岳光荣;李少谦. 毫米波相阵多径信道中的迭代波束成形方法[J]. 西安电子科技大学学报, 2018, 45(4): 143-148.
[6]	唐俊林;曾媛;岳光荣;李少谦. 毫米波相控阵的一种迭代波束成形方法[J]. 西安电子科技大学学报, 2017, 44(6): 122-128.
[7]	李云;陈权;刘期烈;曹傧. 绿色节能的分布式中继分配算法[J]. J4, 2014, 41(2): 159-164.
[8]	任光亮;任晓娜. MIMO-OFDMA系统中的一种新的初始测距方法[J]. J4, 2013, 40(4): 1-5+41.
[9]	夏玉杰;任光亮. 波束成形辅助的连续干扰消除OFDMA初始测距算法[J]. J4, 2013, 40(4): 79-84+154.
[10]	李兆训;胡捍英;任修坤;曹文魁. 双瑞利衰落对传输系统性能的影响[J]. J4, 2011, 38(5): 172-177.
[11]	李兆训;胡捍英. 双瑞利衰落信道下双天线接收系统分集特性分析[J]. J4, 2011, 38(4): 160-166.
[12]	张天魁;程婕;冯春燕. 一种全速率的多天线中继STBC协作机制[J]. J4, 2010, 37(2): 334-339.
[13]	徐志;刘其中;孙保华;纪奕才. X型极化分集系统中的互耦分析 [J]. J4, 2007, 34(2): 222-226.
[14]	李颖;王新梅. 带有预编码的空时分组码设计[J]. J4, 2004, 31(1): 96-101.
[15]	李颖;李佳;王新梅. 基于成对错误概率的空时编码性能分析[J]. J4, 2002, 29(5): 635-639.