Minimum probability of error for asynchronous Gaussian multiple-access channels
IEEE Transactions on Information Theory
Multiuser Detection
Robust constrained linear receivers for CDMA wireless systems
IEEE Transactions on Signal Processing
Blind multiuser channel estimation in asynchronous CDMA systems
IEEE Transactions on Signal Processing
Asymptotically near-optimal blind estimation of multipath CDMA channels
IEEE Transactions on Signal Processing
Performance analysis of minimum variance CDMA receivers
IEEE Transactions on Signal Processing
On the second-order statistics of the eigenvectors of samplecovariance matrices
IEEE Transactions on Signal Processing
Blind multiuser detection: a subspace approach
IEEE Transactions on Information Theory
Blind adaptive multiuser detection
IEEE Transactions on Information Theory
Life after third-generation mobile communications
IEEE Communications Magazine
Broadband wireless access technologies and applications
IEEE Communications Magazine
Active interference suppression in CDMA overlay systems
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
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The minimum output energy (MOE) receiver has been developed for multiuser detection when multipath distortion is present. Its performance has been shown to be very close to the minimum mean square error (MMSE) receiver at high signal-to-noise ratio. However, due to the additive noise, the constraint vector required to construct the MOE receiver is a biased estimate of the channel vector. Thus, the MOE receiver exhibits degraded performance. To mitigate the noise effect, the constraint cost function is modified to obtain a modified MOE (MMOE) receiver in this paper, leading to a significantly improved channel estimate and detection performance. It is also revealed that the MMOE method converges to the well-known subspace method under certain conditions. In addition to the additive noise, imperfect estimation of the output data covariance matrix also causes performance loss and it is studied in details based on perturbation theory.