Effect of the Phase/Quadrature Error and I/Q Gain Imbalance for QAM Symbol Error Probability

Jinah PARK  Seungkeun PARK  Pyung-Dong CHO  Hyeong-Ho LEE  

Publication
IEICE TRANSACTIONS on Communications   Vol.E90-B   No.11   pp.3287-3289
Publication Date: 2007/11/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.11.3287
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Keyword: 
QAM,  symbol error probability,  phase error,  quadrature error,  I-Q gain imbalance,  

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Summary: 
In this letter, we derive an analytical expression for computing the symbol error probability (SEP) of the M-ary quadrature amplitude modulation (M-QAM) in the joint presence of phase/quadrature error and I/Q gain imbalance over an additive white Gaussian noise (AWGN) channel. The derived expression containing only the two-dimensional Gaussian Q-function can be used to compute the SEP of M-QAM in various fading channels by making use of the moment-generating function (MGF) approach.