TY - JOUR
T1 - Semi-blind multiuser receiver for space-time coded CDMA systems
AU - Li, Hongbin
PY - 2002
Y1 - 2002
N2 - In [1], we introduced a linear blind multiuser receiver, referred to as the Capon receiver, for space-time (ST) coded CDMA (code division multiple access) systems. The blind Capon receiver was shown to yield a similar performance to that of the optimum linear MMSE (minimum mean squared error) receiver which requires the CSI (channel state information). The proposed blind Capon receiver, however, needs to resolve a scalar ambiguity (with its blind channel estimate) that is inherent to all blind schemes. Furthermore, all blind receivers, including Capon, are relatively slow in convergence. To address these issues, we present herein a semi-blind Capon receiver by capitalizing on periodically inserted training symbols. We show via numerical examples that the semi-blind Capon receiver achieves a better performance than the training-assisted MMSE receiver in (slowly) time-varying channels, even though the latter incurs a much higher training overhead.
AB - In [1], we introduced a linear blind multiuser receiver, referred to as the Capon receiver, for space-time (ST) coded CDMA (code division multiple access) systems. The blind Capon receiver was shown to yield a similar performance to that of the optimum linear MMSE (minimum mean squared error) receiver which requires the CSI (channel state information). The proposed blind Capon receiver, however, needs to resolve a scalar ambiguity (with its blind channel estimate) that is inherent to all blind schemes. Furthermore, all blind receivers, including Capon, are relatively slow in convergence. To address these issues, we present herein a semi-blind Capon receiver by capitalizing on periodically inserted training symbols. We show via numerical examples that the semi-blind Capon receiver achieves a better performance than the training-assisted MMSE receiver in (slowly) time-varying channels, even though the latter incurs a much higher training overhead.
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U2 - 10.1109/icassp.2002.5745130
DO - 10.1109/icassp.2002.5745130
M3 - Conference article
AN - SCOPUS:0036288013
SN - 1520-6149
VL - 3
SP - III/2401-III/2404
JO - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
JF - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
T2 - 2002 IEEE International Conference on Acoustic, Speech, and Signal Processing
Y2 - 13 May 2002 through 17 May 2002
ER -