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Training Design for Multipath Channel and Frequency-Offset Estimation in MIMO Systems

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2 Author(s)
Ghogho, M. ; Sch. of Electron. & Electr. Eng., Leeds Univ. ; Swami, A.

This paper addresses the problem of training design for frequency-selective channel and carrier frequency-offset (CFO) estimation in single- and multiple-antenna systems under different energy-distribution constraints. The performance metric used here is the Cramer-Rao bound (CRB). The paper first addresses the CFO-free case and then generalizes the results to include CFO-corrupted scenarios. Training sequences are designed that render the CRB for the CFO independent of the channel zeros. The proposed training designs also facilitate simple implementation of the maximum-likelihood CFO and channel estimators. Simulation results illustrate the merits of the proposed training designs

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Signal Processing, IEEE Transactions on  (Volume:54 ,  Issue: 10 )