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I/Q Performance Analysis for IEEE 802.11 b/g VoWLAN Terminal with New Matching Circuit  

Kwoun, Sung-Su (LG-NORTEL 연구소 BCS 개발실)
Lee, Jong-Chul (광운대학교 전파공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.1A, 2007 , pp. 115-124 More about this Journal
Abstract
In this paper, the I/Q mismatch problem between the transmission line and antenna switch is solved by a new CPW matching circuit for a VoWLAN terminal with 54 Mbps communication speed through the IEEE 802.11 b/g CCK/OFDM. I/Q performances with the new matching circuit are analyzed and improved by the output spectrum mask, the characteristics of the EVM(Error Vector Magnitude) due to the nonlinear CCK/OFDM demodulation data, and receiver's sensitivity.
Keywords
VoWLAN; IEEE802.11b/g; OFDM; EVM; Spectrum Mask;
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