The impact of the I/Q mismatching errors on the BER performance of OFDM communication systems

被引：10

作者：

Hieu, Nguyen Thanh ^{[1
]}

Ryu, Heung-Gyoon ^{[1
]}

Wang, Cheng-Xiang ^{[2
]}

Chen, Hsiao-Hwa ^{[3
]}

机构：

[1] Chungbuk Natl Univ, Dept Elect Engn, Chungbuk 361763, South Korea

[2] Heriot Watt Univ, Sch EPS, JRI SIP, Edinburgh EH14 4AS, Midlothian, Scotland

[3] Natl Sun Yat Sen Univ, Inst Commun Engn, Kaohsiung 80424, Taiwan

来源：

2007 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-14 | 2007年

关键词：

D O I：

10.1109/ICC.2007.898

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：

Orthogonal frequency division multiplexing (OFDM) signals are very sensitive to radio frequency (RF) impairments. One of the major impairments is the mismatching errors between the in-phase (1) and quadrature (Q) branches in the up and down-conversions. The I/Q mismatching errors can include phase and amplitude mismatching errors. These mismatching errors make the signal constellation expand and rotate, which severely degrades the performance of OFDM systems. In this paper, a closed-form expression for the bit error rate (BER) of the OFDM system in I/Q mismatching error environments is derived as a function of phase and amplitude mismatching error parameters. This enables a convenient and useful evaluation of the performance of OFDM communication systems with I/Q mismatching errors. The derived analytical expression is validated by the fact that computer simulation results closely match with the analytical derivation results.

引用

页码：5423 / +

页数：2

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