A Precoding method for closed-loop MIMO-OFDM systems

被引：0
|
作者：
Nguyen Quoc Khuong [1 ]
Nguyen Van Duc [1 ]
Nguyen Quoc Trung [1 ]
Vu Thi Minh Tu [1 ]
机构：
[1] Hanoi Univ Technol, Fac Elect & Telecommun, Hanoi, Vietnam
来源：
2008 INTERNATIONAL CONFERENCE ON ADVANCED TECHNOLOGIES FOR COMMUNICATIONS, PROCEEDINGS | 2008年
关键词：
Precoding; Closed; Open-Loop MIMO-OFDM system; CSI - Channel State Information; SVD- Singular Value Decomposition;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents a precoding method for closed loop MIMO-OFDM systems, For precoding. the codeword is selected by comparing the unitary channel matrix, obtained from the SVD method, with a predefined codebook. The performance of closed and open-loop MIMO-OFDM systems is investigated for the case of perfect and imperfect CSI, as well as for different level of quantization. The simulation results show that the first one outperforms the later one in all case. The system performance gain depends on the number of bits using for feedback channel.
引用
收藏
页码：435 / 437
页数：3
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