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An MC-CDMA based cellular communication system in which there are K active users controlled by same the base station is considered.
In this work, a synchronous downlink MC-CDMA system is assumed.
"Subcarrier group assignment for MC-CDMA wireless networks", EURASIP Journal on Wireless Communications and Networking.
"Transmission Power Adaptations in MC-CDMA Communications over Rayleigh Fading Channels", IEEE transactions on Vehicular Technology, 56(6): 3486-3494.
In this study the subcarriers of MC-CDMA, are distributed among the users according to the fairness criterion and the increase of the system capacity is provided by utilizing the Greedy-Like algorithm.
The MC-CDMA is based on the concatenation of spreading codes with multi-carrier modulation to distinguish user symbols.
On the other hand, the network optimization is focused on a CDMA-based network, where DS-CDMA and MC-CDMA are two important CDMA schemes for high rate wireless communications and therefore we aim our study on these schemes [2, 5, 23, 24].
Due to their special signal structure, MC-CDMA signals will not experience significant linear distortion in fading channels where the symbol duration is much larger than the delay spread, which is a measure of the length of the impulse response of the channel.
To mitigate the effect of ICI and to overcome the transmitter complexity of MC-CDMA system, duobinary coded receiver phase rotated conjugate cancellation (RPRCC) with pilot based CFO estimation is proposed in this work.
MC-CDMA, like CDMA, provides high data rate, anti-jamming ability and multiuser support.
The PSO algorithm based MUD is proposed for MC-CDMA system, which aims to equalize independent fading of all sub carriers and also compared with different MUDs.
To improve the performance of MC-CDMA systems, multi-user detections (MUD) are applied.
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