IEEE Transactions on Signal Processing · 2009 · 28 citations · 20 references
EngineeringCommunicationElectrical EngineeringDigital CommunicationInformation TheoryWireless CommunicationsChannel CodingChannel EstimationMultipath PropagationReceiver SystemsWireless Channel ModelingChannel Estimation For Fading ChannelsChannel Estimation For Multiuser SystemsMultipath CompensationMultipath FadingMultipath Fading MitigationOrthogonal Frequency-division MultiplexingOrthogonal Frequency-division Multiplexing Channel Estimation
This correspondence presents an algorithm for compensation of I/Q imbalance for a direct-conversion packet-switched orthogonal frequency-division-multiplexing (OFDM) communications system, which accounts for transmitter I/Q imbalance, receiver I/Q imbalance, phase/frequency error, and dispersive multipath fading. The proposed estimation algorithm is then presented, which operates within the framework of existing multiuser OFDM radio standards (802.11a). It is shown that this algorithm accurately estimates and corrects transceiver I/Q imbalance on a packet-by-packet basis, all within the receiver's digital baseband.
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Digital and analog communication systems
R.E. Ziemer · Proceedings of the IEEE · 1981 · 454 citations