TY - GEN
T1 - Estimation and equalization of time-selective fading channels
AU - Zhou, G. Tong
AU - Kim, Yongsub
AU - Giannakis, Georgios B.
PY - 1999/1/1
Y1 - 1999/1/1
N2 - Time-selective fading effects can occur in communication systems due to channel variations, carrier frequency offset, and oscillator's phase noise. In this paper, we model the multiplicative channel fading effect as an autoregressive process and the objective is to recover the original transmitted symbols. Filterbanks are used here to precode the transmitted symbols and second-order statistics of the output data are computed which in turn, yield the correlation information of the time-varying channel. Next, we employ the Kalman filter to track channel variations and recover the transmitted symbols in a block-by-block fashion. For the Rayleigh fading case, we also take advantage of the additional information provided by pilot symbol assisted modulation (PSAM) to resolve channel ambiguities. Computer simulations are provided to illustrate the concepts.
AB - Time-selective fading effects can occur in communication systems due to channel variations, carrier frequency offset, and oscillator's phase noise. In this paper, we model the multiplicative channel fading effect as an autoregressive process and the objective is to recover the original transmitted symbols. Filterbanks are used here to precode the transmitted symbols and second-order statistics of the output data are computed which in turn, yield the correlation information of the time-varying channel. Next, we employ the Kalman filter to track channel variations and recover the transmitted symbols in a block-by-block fashion. For the Rayleigh fading case, we also take advantage of the additional information provided by pilot symbol assisted modulation (PSAM) to resolve channel ambiguities. Computer simulations are provided to illustrate the concepts.
UR - http://www.scopus.com/inward/record.url?scp=0033308183&partnerID=8YFLogxK
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U2 - 10.1109/ACSSC.1999.832331
DO - 10.1109/ACSSC.1999.832331
M3 - Conference contribution
AN - SCOPUS:0033308183
T3 - Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers
SP - 248
EP - 252
BT - Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers
A2 - Matthews, Michael B.
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 33rd Asilomar Conference on Signals, Systems, and Computers, ACSSC 1999
Y2 - 24 October 1999 through 27 October 1999
ER -