Title :
A low-complexity enhancement to multicarrier CDMA system with ORC
Author :
Yong Liang Guan ; Keli Zhang
Author_Institution :
Nanyang Technol. Univ., Singapore
Abstract :
In this paper, a low-complexity enhancement is proposed for multicarrier code division access (MC-CDMA) with orthogonality restoring combining (ORC). The proposed modified ORC scheme omits the weakest subcarrier in the ORC combining operation. Though with such simple modification the proposed scheme is demonstrated to perform impressively close to the optimal minimum mean square error combining (MMSEC) scheme.
Keywords :
OFDM modulation; code division multiple access; communication complexity; error statistics; MC-CDMA; MMSEC; ORC combining operation; low-complexity multicarrier CDMA system enhancement; modified ORC scheme; multicarrier code division access; optimal minimum mean square error combining scheme; orthogonality restoring combining; weakest subcarrier omission; Additive white noise; Diversity reception; Downlink; Fading; Interference; Mean square error methods; Modulation coding; Multiaccess communication; Multicarrier code division multiple access; OFDM;
Conference_Titel :
Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
0-7803-8647-7
DOI :
10.1109/ICCCAS.2004.1345940
