Title :
Improved interference cancellation for downlink DCT-MC-CDMA systems
Author :
Al-fuhaidi, B.A. ; Hassan, H.E.A. ; Salah, M.M.
Author_Institution :
MTC, Cairo, Egypt
Abstract :
The low complexity receiver structure based on discrete cosine transform for a downlink multicarrier code division multiple access (DCT-MC-CDMA) system is proposed. It employs an interference cancellation scheme with a linear equaliser to suppress the multiple access interference and interference caused by the multipath fading channel The performance of the proposed receivers is analysed and compared to the conventional downlink DFT-MC-CDMA system. Simulation results show a large performance improvement when using such an interference cancellation scheme relative to the DCT equalisation receiver, and interference cancellation for the downlink DFT-MC-CDMA system.
Keywords :
code division multiple access; discrete cosine transforms; fading channels; interference suppression; multipath channels; receivers; DCT equalisation receiver; discrete cosine transform; downlink DCT-MC-CDMA systems; downlink DFT-MC-CDMA system; downlink multicarrier code division multiple access; interference cancellation scheme; linear equaliser; low complexity receiver structure; multipath fading channel; multiple access interference;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2012.4373
