access icon free Improved interference cancellation for downlink DCT-MC-CDMA systems

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.

Inspec keywords: interference suppression; code division multiple access; multipath channels; discrete cosine transforms; fading channels; receivers

Other keywords: interference cancellation scheme; multipath fading channel; downlink DFT-MC-CDMA system; DCT equalisation receiver; low complexity receiver structure; linear equaliser; discrete cosine transform; downlink multicarrier code division multiple access; downlink DCT-MC-CDMA systems; multiple access interference

Subjects: Radio links and equipment; Integral transforms; Electromagnetic compatibility and interference; Multiple access communication

References

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