Estimation and compensation of TX and RX IQ imbalance in OFDM-based MIMO systems

被引：30
|
作者：
Schenk, TCW [1 ]
Smulders, PFM [1 ]
Fledderus, ER [1 ]
机构：
[1] Eindhoven Univ Technol, TTE Dept, POB 513, NL-5600 MB Eindhoven, Netherlands
来源：
2006 IEEE RADIO AND WIRELESS SYMPOSIUM, PROCEEDINGS | 2006年
关键词：
MIMO systems; orthogonal frequency division multiplexing (OFDM); IQ imbalance; compensation;
D O I：
10.1109/RWS.2006.1615133
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 studies the influence, estimation and digital compensation of IQ imbalance at both transmitter and receiver side of a multiple-input multiple-output (MIMO) OFDM system. Hereto it preamble is designed, which enables simultaneous estimation of the channel and imbalance parameters. New estimation approaches for TX, RX and joint TX and RX IQ imbalance in MIMO OFDM systems am proposed and evaluated. Results front a numerical study show that all three proposed compensation approaches are. able to significantly suppress the influence of IQ mismatch.
引用
收藏
页码：215 / 218
页数：4
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