TY - GEN
T1 - Estimation of block-fading channels with reduced-rank correlation matrix
AU - Simeone, O.
AU - Spagnolini, U.
PY - 2007
Y1 - 2007
N2 - In block-fading transmission, the discrete-time taps of time-varying channels can be generally modelled as a stationary random vector process with unknown and rank-deficient correlation matrix. The model applies to single/ multi-antenna systems for single/multi-carrier modulation. In this paper, we propose a hybrid estimator that sequentially estimates the (deterministic) rank-deficient channel correlation matrix and the (random) channel taps. In addition, we derive a bound on the corresponding estimation error by adapting the Cramer Rao bound (CRB) to the case of mixed deterministic and random parameters (Hybrid CRB). Finally, we assess that the proposed estimator is statistically efficient through comparison with the Hybrid CRB.
AB - In block-fading transmission, the discrete-time taps of time-varying channels can be generally modelled as a stationary random vector process with unknown and rank-deficient correlation matrix. The model applies to single/ multi-antenna systems for single/multi-carrier modulation. In this paper, we propose a hybrid estimator that sequentially estimates the (deterministic) rank-deficient channel correlation matrix and the (random) channel taps. In addition, we derive a bound on the corresponding estimation error by adapting the Cramer Rao bound (CRB) to the case of mixed deterministic and random parameters (Hybrid CRB). Finally, we assess that the proposed estimator is statistically efficient through comparison with the Hybrid CRB.
UR - http://www.scopus.com/inward/record.url?scp=44049097293&partnerID=8YFLogxK
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U2 - 10.1109/CISS.2007.4298355
DO - 10.1109/CISS.2007.4298355
M3 - Conference contribution
AN - SCOPUS:44049097293
SN - 1424410371
SN - 9781424410378
T3 - Forty-first Annual Conference on Information Sciences and Systems, CISS 2007 - Proceedings
SP - 490
EP - 493
BT - Forty-first Annual Conference on Information Sciences and Systems, CISS 2007 - Proceedings
T2 - 41st Annual Conference on Information Sciences and Systems, CISS 2007
Y2 - 14 March 2007 through 16 March 2007
ER -