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

页码：555 / 558

页数：4

共 7 条

[1]

*3 GEN PARTN PROJ, 2003, TECHN SPEC GROUP RAD

[2] Orthogonal complex-valued spreading sequences with a wide range of correlation properties [J].