Title :
Constrained MMSE receivers for CDMA systems in frequency-selective fading channels
Author :
Hong, Seung-Chul ; Choi, Jinho ; Jung, Young-Ho ; Kim, Seong Rag ; Lee, Yong H.
Author_Institution :
Samsung Electron. Co. Ltd., Kyunggido, South Korea
Abstract :
A constrained minimum mean square error (CMMSE)-RAKE receiver for multipath fading channels is developed by extending the CMMSE receiver for flat fading channels. Based on the observation that interpath interference causes a bias of the channel estimator in , a receiver that can remove such a bias is proposed, plus a closed-form expression of the bit-error rate of the receiver is derived. Computer simulation is used to demonstrate that the proposed receiver can outperform existing RAKE receivers.
Keywords :
channel estimation; code division multiple access; error statistics; fading channels; least mean squares methods; multipath channels; radio receivers; radiofrequency interference; spread spectrum communication; BER; CDMA system; RAKE receiver; bit error rate; channel estimator; closed-form expression; code division multiple access; constrained MMSE receiver; frequency-selective fading channel; interpath interference; minimum mean square error; multipath fading channel; AWGN; Detectors; Filters; Frequency-selective fading channels; Interference; Mean square error methods; Multiaccess communication; Multipath channels; Multiuser detection; RAKE receivers; Frequency-selective fading channels; MMSE; minimum mean square error; multiuser detection;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2004.833414
