DMCA
Low Complexity Space-Time Multiuser Detectors (1999)
| Venue: | Proceedings of the 1999 IEEE Wireless Commun. and Network Conf . WCNC |
| Citations: | 2 - 2 self |
BibTeX
@INPROCEEDINGS{Onggosanusi99lowcomplexity,
author = {Eko N. Onggosanusi and Akbar M. Sayeed and Barry D. Van Veen},
title = {Low Complexity Space-Time Multiuser Detectors},
booktitle = {Proceedings of the 1999 IEEE Wireless Commun. and Network Conf . WCNC},
year = {1999}
}
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Abstract
A design framework for space-time multiuser detectors is introduced based on the recently introduced notion of canonical space-time coordinates (CSTC). The CSTC system employs a fixed set of basis signals which eliminates the need for estimating direction of arrivals (DOAs) and delays of the channel, thereby allowing significant reduction in receiver complexity. The proposed framework is based on a hybrid structure for multiuser detection which combines the power of centralized processing and the flexibility of decentralized reception. In the first stage, a subset of users whose spreading codes are assumed known are suppressed in a centralized fashion. The remaining interference is suppressed via the second stage in an adaptive decentralized mode. The hybrid scheme offers a flexible design framework by offering lower complexity compared to fully centralized receivers and improved adaptive performance compared to fully decentralized schemes. I. Introduction The use of antenna arrays...
Keyphrases
low complexity space-time multiuser detector antenna array centralized processing adaptive decentralized mode centralized fashion hybrid structure receiver complexity canonical space-time coordinate space-time multiuser detector second stage basis signal design framework fixed set centralized receiver improved adaptive performance hybrid scheme cstc system decentralized reception significant reduction flexible design framework first stage
