上行多用户MIMO中继系统中基于不完全信道状态信息的预编码算法

陈小敏; 朱益民; 苏君煦; 朱秋明; 胡续俊

doi:10.11999/JEIT151161

上行多用户MIMO中继系统中基于不完全信道状态信息的预编码算法

doi: 10.11999/JEIT151161

基金项目:

中国博士后科学基金(2013M541661)，中央高校基本科研业务费专项资金资助(NS2016044)

计量
- 文章访问数: 1259
- HTML全文浏览量: 99
- PDF下载量: 349
- 被引次数: 0
出版历程
- 收稿日期: 2015-10-21
- 修回日期: 2016-02-26
- 刊出日期: 2016-08-19

Precoding Scheme for Up-link Multi-user MIMO System with Imperfect Channel State Information

Funds:

Chinese Postdoctoral Science Foundation (2013M541661), The Fundamental Research Funds for the Central Universities (NS2016044)

摘要

摘要: 论文研究了存在信道估计误差及天线相关条件下，上行多用户MIMO中继系统的预编码问题，目标是提升系统的误比特率性能。针对基于放大转发中继技术的上行多用户MIMO中继系统，考虑源-中继和中继-目的端信道中存在的信道估计误差及天线相关，提出一种基于不完全信道状态信息(Channel State Information, CSI)的预编码设计方案。首先根据最小均方误差(Minimum Mean-Squared Error, MMSE)准则设计代价函数，以发射端和中继端最大功率为约束条件，通过理论推导求得中继端和发射端的线性预编码矩阵，最后采用迭代下降法得到接收端处理矩阵的闭式解。数值仿真结果表明，在存在信道估计误差和天线相关的条件下，与现有算法相比，所提算法能有效降低系统的误比特率。
- 上行多用户MIMO中继 /
- 放大转发 /
- 最小均方误差 /
- 天线相关 /
- 信道估计误差
Abstract: This paper investigates transceiver design for dual-hop up-link multi-user Multiple-Input Multiple- Output (MIMO) system with Amplify-and-Forward (AF) relay to improve the performance of Bit Error Ratio (BER) under the imperfect Channel State Information (CSI). Since the antenna correlation at both ends of the channel and the channel estimation errors are taken into account, a robust transceiver design is proposed. The optimization issue is formed with Minimum Mean-Square Error (MMSE) rule firstly. Then the relaying matrix and the optimal source precoding matrix are optimized at the maximum power constraint of the transmitter and relay station subsequently. Finally, the equalizer is optimized by a gradient-based line search algorithm. Simulation results indicate that the proposed design approach achieves better robustness against antenna correlation and channel estimation errors than existing methods.
- Up-link multi-user MIMO relay system /
- Amplify-and-forward /
- Minimum Mean-Square Error (MMSE) /
- Antenna correlation /
- Channel estimation errors

HTML全文

参考文献(18)

SANGUINETTI L, AMICO A, and RONG Y. A tutorial on the optimization of amplify-and-forward MIMO relay systems[J]. IEEE Journal Selected on Areas in Communications, 2012, 30(8): 1331-1346.

TELATAR E. Capacity of multi-antenna Gaussian channels[J]. European Transactions on Telecommunications, 1999, 6(10): 585-595.

TANG X and HUA Y. Optimal design of non-regenerative MIMO wireless relays[J]. IEEE Transactions on Wireless Communications, 2007, 6(4): 1398-1407.

GUAN W and LUO H. Joint MMSE transceiver design in non-regenerative MIMO relay systems[J]. IEEE Communications Letters, 2008, 12(7): 517-519.

SHEN H, XU W, and ZHAO C. Robust transceiver for AF MIMO relaying with direct link: a globally optimal solution [J]. IEEE Signal Processing Letters, 2014, 21(8): 947-951.

ZHAI C, LI X, and HEI Y. Joint linear transceiver design for uplink multiuser non-regenerative MIMO relay systems[C]. IEEE International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM), Wuhan, 2011: 1-4.

KHANDAKER M R and RONG Y. Joint transceiver optimization for multiuser MIMO relay communication systems[J]. IEEE Transactions on Signal Processing, 2012, 60(11): 5977-5986.

ZHAO C and CHAMPAGNE B. A unified approach to optimal transceiver design for non-regenerative MIMO relaying[J]. IEEE Transactions on Vehicular Technology, 2013, 66(7): 2938-2951.

LIU J, GAO F, and QIU Z. Robust transceiver design for multi-user multiple-input multiple-output amplify-and- forward relay systems[J]. IET Communications, 2014, 8(12): 2162-2170.

DING M and BLOSTEIN S D. MIMO minimum total MSE transceiver design with imperfect CSI at both ends[J]. IEEE Transactions on Signal Processing, 2009, 57(3): 1141-1150.

李敏, 林敏. 同信道干扰条件下的多天线放大转发中继中断概率分析[J]. 电子与信息学报, 2015, 37(1): 163-168. doi: 10.11999/JEIT140141.

LI Min and LIN Min. Outage probability analysis of dual-hop MIMO amplify-and-forward relaying with multiple cochannel interferences[J]. Journal of Electronics Information Technology, 2015, 37(1): 163-168. doi: 10.11999/JEIT140141.

于晓丹, 陈小敏, 谭伟, 等. 存在信道反馈延迟时Turbo- BLAST系统的自适应功率分配算法[J]. 电子与信息学报, 2014, 36(4): 787-791. doi: 10.3724/SP.J.1146.2013.00872.

YU Xiaodan, CHEN Xiaomin, TAN Wei, et al. Adaptive power allocation algorithm for Turbo-BLAST system with channel feedback delay[J]. Journal of Electronics Information Technology, 2014, 36(4): 787-791. doi: 10.3724/ SP.J.1146.2013.00872.

WANG R and TAO M. Joint source and relay precoding designs for MIMO two-way relaying based on MSE criterion [J]. IEEE Transactions on Signal Processing, 2012, 60(3): 1352-1365.

CHEN W X, MA S D, WU Y C, et al. Robust joint design of linear relay precoder and destination equalizer for dual-hop amplify-and-forward MIMO relay systems[J]. IEEE Transactions on Signal Processing, 2010, 58(4): 2273-2283.

CHEN C E and CHOU S K. A gradient-descent weighted sum MSE transceiver design for multi-user multi-relay downlink systems[C]. IEEE Vehicular Technology Conference (VTC Spring), Glasgow, 2015: 1-4.

STEPHEN B and LIEVEN V. Convex Optimization[M]. New York: Cambridge University Press, 2004: 466-469.

施引文献

资源附件(0)

访问统计