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Further Result on the Symbol Error Probability of MPSK with I/Q Phase Unbalance
Jaeyoon LEE Dongweon YOON Sang Kyu PARK
Publication
IEICE TRANSACTIONS on Communications
Vol.E89-B
No.5
pp.1675-1677 Publication Date: 2006/05/01 Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.5.1675 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Transmission Systems and Transmission Equipment for Communications Keyword: probability of error, I/Q phase unbalance, MPSK,
Full Text: PDF(169.8KB)>>
Summary:
The quadrature component unbalance generated by a non-ideal component such as an imperfect 90-degree phase shifter is an inevitable physical phenomenon and leads to performance degradation in a practical coherent M-ary phase shift keying (MPSK) transceiver. In this letter, we present an exact and general expression involving the one- and two-dimensional Gaussian Q-functions for the symbol error rate (SER) of MPSK with I/Q phase unbalance over an additive white Gaussian noise (AWGN) channel. The SER expression provided here offers a convenient way to evaluate the performance of MPSK systems for various cases of practical interest.
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