Analytical approach to I/Q imbalance in OFDM, CDMA and MC-CDMA based systems

被引：7
|
作者：
Rykaczewski, P [1 ]
Valkama, M
Renfors, M
机构：
[1] Univ Karlsruhe, TH, Karlsruhe, Germany
[2] Tampere Univ Technol, FIN-33101 Tampere, Finland
来源：
2006 IEEE RADIO AND WIRELESS SYMPOSIUM, PROCEEDINGS | 2006年
关键词：
digital radio; radio receivers; OFDM; CDMA; I/Q mismatch;
D O I：
10.1109/RWS.2006.1615217
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：
Crowing requirements set upon communications transceivers lead to high sensitivity to non-idealities of analog front-end components. Mismatches in the amplitudes and phases of the I and Q signal branches is one of die major concerns resulting in insufficient rejection of the image frequency band. This paper presents a novel analytical model of I/Q imbalance in OFDM. CDMA and MC-CDMA based communications systems. According to the obtained results, I/Q imbalance effects depend heavily on the applied spreading code class and cell load in case of CDMA and MC-CDMA, which should be taken into account in the system and receiver design. Outcomes of the theoretical studies are verified by extensive system simulations.
引用
收藏
页码：555 / 558
页数：4
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