Title :
Blind Multi-User Detection for DS-CDMA Based on FastICA
Author :
Zhang, Jindong ; Qin, Guihe
Author_Institution :
Inst. of Comput. Sci. & Technol., Jilin Univ., Changchun
Abstract :
According to asynchronism of the sampling process and the transmission of the symbols, the original symbol can be estimated by use of the original symbol and the symbols around. The feedback multi-user DS-CDMA model that also had been existed was improved. The DS-CDMA blind source was seperated step by step, used the FastICA algorithm. The algorithm converges after iterates about 15 times. The result of the experiment proves that, this system can examine the user symbol more accurately, has lower miss rate, the method has been proposed is clearly better than MMSE and MF in the aspect of system energy control.
Keywords :
blind source separation; code division multiple access; independent component analysis; multiuser detection; signal sampling; spread spectrum communication; DS-CDMA blind source; FastICA algorithm; blind multiuser detection; blind source separation; code division multiple access; feedback multiuser DS-CDMA model; independent component analysis; sampling process; symbol transmission; system energy control; user symbol; Computer science; Higher order statistics; Independent component analysis; Interference cancellation; Jamming; Multiaccess communication; Multiuser detection; Signal processing; Signal processing algorithms; Source separation;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-2107-7
Electronic_ISBN :
978-1-4244-2108-4
DOI :
10.1109/WiCom.2008.382
