Title :
Interference suppression using de-correlating rake receiver in case of WCDMA
Author :
Patel, Surabhi ; Patra, Sarat Kumar
Author_Institution :
Dept. of Electron. & Commun. Eng., Nat. Inst. of Technol., Rourkela, India
Abstract :
Rake receivers are used for the detection of transmitted data in case of WCDMA communication systems due to its resistance to multipath fading. But rake receiver treat multiuser interference (MUI) as AWGN and have limitation in overcoming the effect of multiple access interference (MAI) when the SNR is high. A de-correlating matched filter has been used in this paper, which eliminates and improves system performance. Simulated results show a significant performance improvement for De-correlating RAKE receiver in terms of BER compared to a rake receiver. The performance of the de-correlating receiver for different spreading factor is also analysed.
Keywords :
code division multiple access; decorrelation; error statistics; fading channels; interference suppression; matched filters; multipath channels; radio receivers; AWGN; BER; MAI; MUI; SNR; WCDMA communication systems; decorrelating rake receiver; interference suppression; matched filter; multipath fading; multiple access interference; multiuser interference; performance improvement; spreading factor; wideband code division multiple access; Channel estimation; Fading; Matched filters; Multiaccess communication; Multipath channels; Receivers; Signal to noise ratio; MMSE; WCDMA; de-correlating matched filter; rake receiver;
Conference_Titel :
Emerging Trends in Computing, Communication and Nanotechnology (ICE-CCN), 2013 International Conference on
Conference_Location :
Tirunelveli
Print_ISBN :
978-1-4673-5037-2
DOI :
10.1109/ICE-CCN.2013.6528573
