Equal BER power distribution control for multicode MC-CDMA with MMSE successive interference cancellation
Mizhou Tan
Bar-Ness, Y.
Dept. of Electr. & Comput. Eng.,, New Jersey Inst. of Technol., Newark, NJ, USA;
This paper appears in: Communications, 2004 IEEE International Conference on
Publication Date: 20-24 June 2004
Volume: 5,
On page(s): 2558- 2562 Vol.5
ISSN:
ISBN: 0-7803-8533-0
INSPEC Accession Number: 8161279
Digital Object Identifier: 10.1109/ICC.2004.1312994
Current Version Published: 2004-07-26
Abstract
Multicode multi-carrier CDMA (MC-CDMA) is a promising candidate for supporting multimedia services in future wireless communications. However, the performance of this system is limited by self-interference (SI) of user's multicodes and multi-user interference (MUI). In this paper, to mitigate this problem, a minimum mean square error successive interference cancellation (MMSE-SIC) receiver is applied in the multicode MC-CDMA. Furthermore, to increase the efficiency of SIC, a simple power distribution control (PDC) algorithm, based on equal BER criterion, is investigated under a short-term constraint of average transmit power. In correlated Rayleigh fading channels, the MMSE-SIC receiver integrated with the equal BER PDC can suppress interference effectively, resulting in a performance close to the single user bound (SUB).
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