TY - GEN
T1 - Optimal training designs for bayesian channel estimators with application in CDMA systems
AU - Vosoughi, Azadeh
AU - Scaglione, Anna
PY - 2005/1/1
Y1 - 2005/1/1
N2 - In this paper, we address the problem of data transmission over a block fading frequency selective multi-input multi-output (MIMO) channel. The encoded data symbols are passed through an affine precoder and sent over multiple transmit antennas. Affine precoding is a unifying model of the existing training schemes, namely, preamble based training, pilot symbol assisted modulation (PSAM), and superimposed training. Within this general model, we show that the channel Cramer-Rao bound (CRB) is minimized if the precoded data and training symbols satisfy a special form of orthogonality. Under the power constraint on the training and the precoded symbols, we provide optimal and suboptimal training design guidelines.
AB - In this paper, we address the problem of data transmission over a block fading frequency selective multi-input multi-output (MIMO) channel. The encoded data symbols are passed through an affine precoder and sent over multiple transmit antennas. Affine precoding is a unifying model of the existing training schemes, namely, preamble based training, pilot symbol assisted modulation (PSAM), and superimposed training. Within this general model, we show that the channel Cramer-Rao bound (CRB) is minimized if the precoded data and training symbols satisfy a special form of orthogonality. Under the power constraint on the training and the precoded symbols, we provide optimal and suboptimal training design guidelines.
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U2 - 10.1109/ssp.2005.1628805
DO - 10.1109/ssp.2005.1628805
M3 - Conference contribution
AN - SCOPUS:33947110913
SN - 0780394046
SN - 9780780394049
T3 - IEEE Workshop on Statistical Signal Processing Proceedings
SP - 1348
EP - 1353
BT - 2005 IEEE/SP 13th Workshop on Statistical Signal Processing - Book of Abstracts
PB - IEEE Computer Society
T2 - 2005 IEEE/SP 13th Workshop on Statistical Signal Processing
Y2 - 17 July 2005 through 20 July 2005
ER -