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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/2067

Title: Performance analysis of space-time coding with imperfect channel estimation
Authors: Garg, P
Mallik, R K
Gupta, H A
Keywords: space-time coding
pilot code symbols
M/spl times/N perturbation matrix
zero-mean circular
Issue Date: 2002
Citation: Personal Wireless Communications, IEEE International Conference on, 71 - 75p.
Abstract: We analyze the error performance of a space-time coding system using M transmit and N receive antennas with imperfect channel estimation in Rayleigh fading. A least-squares estimate of the channel matrix is obtained by using a sequence of pilot code symbols. The estimate is found to be perturbed by an M/spl times/N perturbation matrix with correlated zero-mean circular Gaussian entries. An N/spl times/L code matrix is used to transmit N/spl times/1 code vectors over L symbol intervals. Using the characteristic function of the decision variable,. we derive a closed-form expression for the pairwise error probability. Numerical results show that the degradation in performance due to imperfect channel estimation can be compensated by increasing the number of receive antennas.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/2067
Appears in Collections:Electrical Engineering

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