EM-Based Joint Channel Estimation and IQ Imbalances for OFDM Systems

The imbalances between the In-phase (I) and Quadrature-phase (Q) branches represent a significant source of impairment in the orthogonal frequency division multiplexing (OFDM) systems. Recently, it has been shown that the unwanted IQ imbalances can be actually exploited to achieve a diversity gain....

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Vydané v:	IEEE transactions on broadcasting Ročník 58; číslo 1; s. 106 - 113
Hlavní autori:	Marey, M., Samir, M., Dobre, O. A.
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	New York, NY IEEE 01.03.2012 Institute of Electrical and Electronics Engineers
Predmet:	Applied sciences Bit error rate Channel estimation Detection, estimation, filtering, equalization, prediction Exact sciences and technology Information, signal and communications theory IQ imbalances Maximum likelihood estimation ML and EM algorithms Multiplexing OFDM Radiocommunications Receivers Signal and communications theory Signal, noise Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Transmission and modulation (techniques and equipments) Transmitters Transmitters. Receivers Performance evaluation ML and EM algorithms Parameter estimation IQ imbalances OFDM Bit error rate Transmitter Iterative method Joint detection Pulse response Channel estimation Orthogonal frequency division multiplexing Maximum likelihood Optimal planning EM algorithm Queue
ISSN:	0018-9316, 1557-9611
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