TY - GEN
T1 - Kalman filter-based channel estimation for amplify and forward relay communications
AU - Zhou, Xiangyun
AU - Lamahewa, Tharaka A.
AU - Sadeghi, Parastoo
PY - 2009
Y1 - 2009
N2 - We propose an autoregressive model for the combined amplify and forward time-varying relay channel and derive a causal iterative channel estimation method using Kalman filter. This formulation enables us to study and compare two widely used pilot transmission strategies in terms of the channel estimation errors. We provide a single-letter formula for the power allocation between the source and relay to achieve near optimal bit error rate (BER) performance in dual-hop communications. For cooperative communications, we show that the relay speed has a significant impact on the BER performance, and hence is important to be considered in practical system design.
AB - We propose an autoregressive model for the combined amplify and forward time-varying relay channel and derive a causal iterative channel estimation method using Kalman filter. This formulation enables us to study and compare two widely used pilot transmission strategies in terms of the channel estimation errors. We provide a single-letter formula for the power allocation between the source and relay to achieve near optimal bit error rate (BER) performance in dual-hop communications. For cooperative communications, we show that the relay speed has a significant impact on the BER performance, and hence is important to be considered in practical system design.
UR - http://www.scopus.com/inward/record.url?scp=77953855256&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.2009.5470105
DO - 10.1109/ACSSC.2009.5470105
M3 - Conference contribution
SN - 9781424458271
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 1498
EP - 1502
BT - Conference Record - 43rd Asilomar Conference on Signals, Systems and Computers
T2 - 43rd Asilomar Conference on Signals, Systems and Computers
Y2 - 1 November 2009 through 4 November 2009
ER -