Hybrid linear-iterative detection algorithms for MIMO CDMA systems in multipath channels

We assume a CDMA downlink multiuser scenario, where the base station is equipped with multiple transmit antennas, and each user has multiple receive antennas. For this setup we propose a new, computationally effective MIMO multiuser detector for frequency selective channels. We exploit the fact that...

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Bibliographic Details
Main Authors: Muharemovict, Tarik, Onggosanusi, Eko N., Dabak, Anand G., Aazhang, Behnaam
Format: Conference Proceeding
Language:English
Subjects:
Antennas
Chirp
Computational modeling
Interference
MIMO
Multiaccess communication
Multipath channels
Online Access:Request full text
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Description
Summary:We assume a CDMA downlink multiuser scenario, where the base station is equipped with multiple transmit antennas, and each user has multiple receive antennas. For this setup we propose a new, computationally effective MIMO multiuser detector for frequency selective channels. We exploit the fact that the interference mainly comes from the spatial domain, while the residual interference is due to temporal dispersion and multiuser interference. This motivates us to suppress the residual interference in a linear fashion, while combating the spatial interference iteratively. This approach is an efficient performance-complexity tradeoff between fully iterative and linear detectors.
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.2002.5745185