Wideband CDMA For Third Generation Mobile Communications: Universal Personal Communications
Wideband CDMA For Third Generation Mobile Communications: Universal Personal Communications
IEEE Transactions on Signal Processing - Part II
IEEE Transactions on Signal Processing
Blind and semi-blind equalization for generalized space-time block codes
IEEE Transactions on Signal Processing
Minimum variance linear receivers for multiaccess MIMO wireless systems with space-time block coding
IEEE Transactions on Signal Processing
Fast, rank adaptive subspace tracking and applications
IEEE Transactions on Signal Processing
Blind adaptive space-time multiuser detection with multipletransmitter and receiver antennas
IEEE Transactions on Signal Processing
IEEE Transactions on Information Theory
Space-time block codes from orthogonal designs
IEEE Transactions on Information Theory
Unitary space-time modulation for multiple-antenna communications in Rayleigh flat fading
IEEE Transactions on Information Theory
Space-time processing for broadband wireless access
IEEE Communications Magazine
A simple transmit diversity technique for wireless communications
IEEE Journal on Selected Areas in Communications
A differential detection scheme for transmit diversity
IEEE Journal on Selected Areas in Communications
Wireless Communications & Mobile Computing
Hi-index | 0.00 |
The code-division multiple-access (CDMA) multiple-input multiple-output (MIMO) systems with Alamouti's space-time block codes (STBC) have been widely investigated for the great demand of capacities and transmission rates in the future wireless communication systems. The semi-blind Capon multiuser receiver is designed to achieve the goal by the usage of linearly constrained minimum variance (LCMV) filters. However, the Capon receiver suffers finite samples and signature vector errors. In this paper, we propose a novel two-stage receiver containing partially adaptive linear filters in parallel followed by the channel estimator and symbol detector. Two transformation schemes based on subspace techniques are designed in the partially adaptive linear filters. The channel estimation is executed after the partially adaptive linear filter where the computational complexity is saved considerably. A performance enhancement method is introduced by using the forward-backward averaging technique. According to the weighting analysis, we also present a simplified two-stage receiver with lower complexity. Furthermore, the diagonal-loading (DL) technique based on the worse-case performance optimization is often used to alleviate the drawbacks of Capon receiver. In the end, we apply the proposed the forward-backward averaging technique and the weighting analysis onto the DL-based Capon receivers. Computer simulations are given to demonstrate the effectiveness of the two-stage partially adaptive linear receivers for the CDMA MIMO systems with Alamouti's STBC schemes and the performance improvement of the DL-based Capon receivers with the forward-backward averaging technique and the weighting analysis.