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|Title:||Multicarrier CDMA with adaptive frequency hopping for mobile radio systems|
Cellular radio systems
Communication channels (information theory)
Bit error probability
Multicarrier direct sequence code division multiple access
Single carrier RAKE receiver systems
Water filling principle
|Citation:||IEEE Journal on Selected Areas in Communications, 14(9), 1852-1858|
|Abstract:||A modified multicarrier (MC) direct-sequence code-division multiple-access (DS-CDMA) system has been proposed for use over slow multipath fading channels with frequency selectivity in the reverse link transmission of a cellular network. Instead of transmitting data substreams uniformly through subchannels, data substreams hop over subchannels with the hopping patterns adaptively adjusted to the channel fading characteristics. The problem of determining the optimal hopping pattern is formulated as a multiobjective optimization problem, for which an efficient algorithm, based on the water-filling (WF) principle, is designed to solve the problem practically. Simulation results show that the performance in terms of the average bit-error probability (BEP) (over all users) is better than that of single carrier RAKE receiver systems, conventional MC CDMA systems applying moderate error protection, or diversity systems with different combining techniques.|
|Appears in Collections:||Articles|
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