TY - GEN
T1 - Robust multiuser detection for multi-carrier CDMA
AU - Wang, Rensheng
AU - Li, Hongbin
PY - 2006
Y1 - 2006
N2 - In this paper, we propose a class of robust multiuser detection (MUD) techniques for multi-carrier (MC) code-division multiple-access (CDMA) by explicitly taking into account prior estimation errors in the initial channel estimates and the sample covariance matrix. Specifically, robust MUD detectors are developed by optimizing the worst-case performance over two separate bounded uncertainty sets pertaining to the aforementioned estimation errors. We have shown that, although the prior estimation errors are generally not bounded, it is beneficial to optimize the worst-case performance over properly chosen bounded uncertainty sets determined by a bounding probability of user choice. Numerical results show that the proposed robust schemes yield improved performance over those that ignore the prior estimation errors.
AB - In this paper, we propose a class of robust multiuser detection (MUD) techniques for multi-carrier (MC) code-division multiple-access (CDMA) by explicitly taking into account prior estimation errors in the initial channel estimates and the sample covariance matrix. Specifically, robust MUD detectors are developed by optimizing the worst-case performance over two separate bounded uncertainty sets pertaining to the aforementioned estimation errors. We have shown that, although the prior estimation errors are generally not bounded, it is beneficial to optimize the worst-case performance over properly chosen bounded uncertainty sets determined by a bounding probability of user choice. Numerical results show that the proposed robust schemes yield improved performance over those that ignore the prior estimation errors.
UR - http://www.scopus.com/inward/record.url?scp=34250193316&partnerID=8YFLogxK
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M3 - Conference contribution
AN - SCOPUS:34250193316
SN - 1424400651
SN - 9781424400652
T3 - Proceedings of the 2006 IEEE International Conference on Networking, Sensing and Control, ICNSC'06
SP - 463
EP - 467
BT - Proceedings of the 2006 IEEE International Conference on Networking, Sensing and Control, ICNSC'06
T2 - 2006 IEEE International Conference on Networking, Sensing and Control, ICNSC'06
Y2 - 23 April 2006 through 25 April 2006
ER -