Title :
Adaptive parallel interference cancellation for uplink MC-CDMA in Rayleigh fading channels
Author :
Feng, Xiaoyan ; Tsimenidis, Charalampos ; Sharif, Bayan
Author_Institution :
Univ. of Newcastle upon Tyne, Newcastle upon Tyne
Abstract :
In this paper, an adaptive parallel interference cancellation (PIC) receiver is introduced for asynchronous multicarrier code division multiple access based (MC-CDMA) communications systems. The multiple access interference (MAI) estimates are obtained using the bit estimates from the previous stage and the adaptive weights for the bit estimates. The adaptive weights are updated by minimizing the mean squared error between the received signal and its estimate based on the adaptation of the normalized least mean square (LMS) algorithm. The results from the simulations show that the performance of conventional PIC (CPIC) and adaptive PIC (APIC) can be different depending on the combining schemes used.
Keywords :
Rayleigh channels; code division multiple access; interference suppression; least mean squares methods; Rayleigh fading channel; adaptive parallel interference cancellation; asynchronous multicarrier code division multiple access communications systems; multiple access interference estimation; normalized least mean square algorithm; uplink MC-CDMA; Fading; Interference cancellation; Intersymbol interference; Least squares approximation; Multiaccess communication; Multicarrier code division multiple access; Multipath channels; Multiple access interference; Multiuser detection; Wireless communication;
Conference_Titel :
Software, Telecommunications and Computer Networks, 2007. SoftCOM 2007. 15th International Conference on
Conference_Location :
Split-Dubrovnik
Print_ISBN :
978-953-6114-93-1
Electronic_ISBN :
978-953-6114-95-5
DOI :
10.1109/SOFTCOM.2007.4446059
