Title :
Novel Frequency-Domain Oversampling Receiver for CP MC-CDMA Systems
Author :
Yanxin Yan ; Maode Ma
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
The multi-carrier code division multiple access (MC-CDMA) technique is a promising technology because it incorporates the benefits of the orthogonal frequency division multiplexing (OFDM) and the direct sequence code division multiple access (DS-CDMA) techniques. The bit error rate (BER) of the MC-CDMA system reduces more quickly than that of the OFDM system when increasing the transmission power. In this paper, we propose a novel frequency-domain oversampling (FDO) minimum mean square error (MMSE) receiver for the cyclic prefix (CP) MC-CDMA. Simulation results show that the proposed FDO based receiver for the CP MC-CDMA systems can outperform the traditional zero forcing (ZF) and MMSE equalizers in terms of BER performance for all the spreading factors (SF).
Keywords :
OFDM modulation; code division multiple access; equalisers; error statistics; least mean squares methods; radio receivers; BER performance; CP MC-CDMA systems; DS-CDMA techniques; MC-CDMA system; MC-CDMA technique; MMSE equalizers; MMSE receiver; OFDM system; bit error rate; cyclic prefix; direct sequence code division multiple access; frequency-domain oversampling; frequency-domain oversampling receiver; minimum mean square error; multicarrier code division multiple access; orthogonal frequency division multiplexing; spreading factors; transmission power; zero forcing; Bit error rate; Equalizers; Frequency-domain analysis; Multicarrier code division multiple access; OFDM; Receivers; MMSE detection; Multi-carrier CDMA; frequency domain oversampling;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2015.2391103
