Low-complexity Turbo-equalization for diversity channels
Signal Processing
Turbo Coding, Turbo Equalisation and Space-Time Coding for Transmission over Fading Channels
Turbo Coding, Turbo Equalisation and Space-Time Coding for Transmission over Fading Channels
Minimum mean squared error equalization using a priori information
IEEE Transactions on Signal Processing
Reduced-complexity space-time turbo-equalization for frequency-selective MIMO channels
IEEE Transactions on Wireless Communications
Probability of error in MMSE multiuser detection
IEEE Transactions on Information Theory
IEEE Transactions on Information Theory
A simple transmit diversity technique for wireless communications
IEEE Journal on Selected Areas in Communications
A space-time coding modem for high-data-rate wireless communications
IEEE Journal on Selected Areas in Communications
Iterative receivers for multiuser space-time coding systems
IEEE Journal on Selected Areas in Communications
Linear space-time multiuser detection for multipath CDMA channels
IEEE Journal on Selected Areas in Communications
On the MMSE criterion for space-time coded signaling in the presence of unknown interference
Research Letters in Communications - Regular issue
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Iterative multiuser detection in a single-carrier broadband multiple-input multiple-output (MIMO) system is studied in this paper. A minimum mean squared error (MMSE) low-complexity multiuser receiver is derived for space-division multiple-access (SDMA) space-time trellis-coded (STTrC) systems in frequency-selective fading channels. The receiver uses MMSE filtering to jointly detect several transmit antennas of the user of interest, while the interference from the undetected transmit antennas, cochannel interference (CCI), and intersymbol interference (ISI) are all cancelled by the soft cancellation. The performances of two extreme receiver cases are evaluated. In the first case, only one transmit antenna of the user of interest is detected at a time and the remaining ones are cancelled by soft cancellation. In the second case, all the transmit antennas are detected jointly. The comparison of the two cases shows improvement with the latter one, both in single-user and multiuser communications and in the presence of unknown cochannel interference (UCCI). It is further shown that in the multiuser case, the proposed receivers approach the corresponding single-user bounds. The number of receive antenna elements required to achieve single-user bound is thereby equal to the number of users and not to the total number of transmit antennas.