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Multi carrier code division multiple access (MC-CDMA) is an efficient multi carrier modulation (MCM) technique that mitigates problems like spectral limitation and distortion due to multipath channels. Nevertheless, in a high speed mobile communication channels the orthogonality among subcarriers are destroyed due to multipath fading. The loss of orthogonality can cause inter carrier interference...
A turbo block code (TBC) technique for improving the performance of a multi-carrier code division multiple access (MC-CDMA) system in terms of bit error rate (BER) is proposed in this paper. The objective of this work is to develop a coding scheme that generates low BER code-words. By implementing a time domain TBC, designed using powerful low density parity check (LDPC) code, the BER performance...
In this paper turbo multi-user detection (MUD) technique is proposed for multi carrier code division multiple access (MC-CDMA) system to overcome the affects of multiple access interference (MAI) caused by the inter-cell and intra-cell interference and near far effect. The proposed technique estimates the interference from the unknown users and the interference estimate is subtracted from the received...
The combination of multiple antennas and multi-carrier code division multiple access (MC-CDMA) is a strong candidate for the downlink of future mobile communications. The study of such systems in scenarios that model real life transmissions is an additional step towards an optimised achievement. Nevertheless, when transmitting over fading channel multi-cell interference occurs and this degrades the...
Multi-carrier code division multiple access (MC-CDMA) systems achieves high data rates in wireless communication. Nevertheless, when transmitting over fading channel, multi-cell interference occurs which degrades the performance of the system. Site diversity technique is applied to the system to overcome multi-cell interference. However, multi-cell interference has not been completely eradicated as...
The combination of multiple antennas and multicarrier code division multiple access (MC-CDMA) is a strong candidate for the downlink of future mobile communications. The study of such systems, in scenarios that model real-life transmissions is an additional step towards an optimised achievement. Channel estimation is employed to improve its performance by characterising the channel. In this paper...
In this paper space time serial interference cancellation (STSIC) detection technique is proposed for multi-user multiple-input multiple-output (MIMO) multi-carrier code division multiple access (MC-CDMA) system to over come the affects of multiple access interference (MAI) caused by other users present in the system. STSIC technique combines the receiver diversity and serial interference cancellation...
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