Title :
ICA detection for MC-CDMA systems
Author_Institution :
Dept. of Electr. Eng., R.O.C. Mil. Acad., Kaohsiung, Taiwan
Abstract :
The multicarrier code division multiple access (MC-CDMA) technique has received considerable attention due to its high data rate for future wireless communication systems. A common problem to multiuser MC-CDMA detectors under Rayleigh fading channels is that the performance is very sensitive to the signature waveform mismatch (SWM) induced by channel estimation distortion. Besides, the disturbance of colored noise could make the performance of the system worse. In this paper, the proposed multiuser detector which utilizes the modified independent component analysis (ICA) algorithm based on approximate negentropy maximization under the second-order cone programming (SOCP) constraint can provide robustness against small-to-medium SWM over colored noise environment for a synchronous MC-CDMA system.
Keywords :
Rayleigh channels; channel estimation; code division multiple access; independent component analysis; multiuser detection; ICA detection; Rayleigh fading channels; SOCP constraint; approximate negentropy maximization; channel estimation distortion; colored noise disturbance; colored noise environment; modified ICA algorithm; modified independent component analysis; multicarrier code division multiple access technique; multiuser MC-CDMA detectors; second-order cone programming; signature waveform mismatch; small-to-medium SWM; synchronous MC-CDMA system; wireless communication systems; Colored noise; Detectors; Fading; Multicarrier code division multiple access; Robustness; Vectors; independent component analysis (ICA); negentropy; second-order cone programming (SOCP);
Conference_Titel :
Intelligent Signal Processing and Communications Systems (ISPACS), 2012 International Symposium on
Conference_Location :
New Taipei
Print_ISBN :
978-1-4673-5083-9
Electronic_ISBN :
978-1-4673-5081-5
DOI :
10.1109/ISPACS.2012.6473582
