An improved ICA-assisted receiver for MC-CDMA

Author

Homayounzadeh, A.

Author_Institution

Sch. of Electr. & Comput. Eng., Shiraz Univ., Shiraz, Iran

fYear

2011

fDate

20-21 Oct. 2011

Firstpage

44

Lastpage

48

Abstract

In this paper an improved receiver for MC-CDMA, which uses Independent Component Analysis (ICA), is presented. The proposed method, called MMSE-ICA is a combination of MMSE equalization, followed by ICA as an improving step. The method can recover the distorted MC-CDMA symbols in a frequency selective fading channel efficiently. The effect of Carrier Frequency Offset (CFO) which in turn degrades the performance of MC-CDMA systems, is also considered and it is shown that the proposed method can compensate it effectively. The improvement in system´s performance is also confirmed via computer simulations.

Keywords

code division multiple access; equalisers; fading channels; independent component analysis; least mean squares methods; MC-CDMA systems; MMSE equalization; carrier frequency offset; distorted MC-CDMA symbols; frequency selective fading channel; improved ICA-assisted receiver; independent component analysis; Bit error rate; Covariance matrix; Fading; Multicarrier code division multiple access; OFDM; Receivers; ICA; Inter-Carrier Interference (ICI); MC-CDMA; Minimum Mean Square Error (MMSE) Equalizer;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunication Systems, Services, and Applications (TSSA), 2011 6th International Conference on

Conference_Location

Bali

Print_ISBN

978-1-4577-1441-2

Type

conf

DOI

10.1109/TSSA.2011.6095403

Filename

6095403