Optimal timeslot and channel allocation considering fairness for multicell CDMA/TDD systems

Optimal timeslot and channel allocation considering fairness for multicell CDMA/TDD systems

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Article ID: iaor20072364
Country: United Kingdom
Volume: 33
Issue: 11
Start Page Number: 3203
End Page Number: 3218
Publication Date: Nov 2006
Journal: Computers and Operations Research
Authors: , ,
Keywords: communication, allocation: resources, optimization: simulated annealing
Abstract:

The CDMA/TDD system is a highly attractive solution to support the next generation cellular mobile systems which provide unbalanced multimedia services between downlink and uplink. In this paper, we analyze the interference for downlink and uplink timeslots in a multicell CDMA/TDD system. We also mathematically formulate an optimal timeslot and channel allocation problem considering capacity fairness among cells, which is to maximize the system capacity under the given traffic unbalance, and propose an efficient algorithm based on the simulated annealing technique. Extensive experimental results show that the proposed scheme yields a good performance, and fairness among cells improves with a decrease in the system capacity.

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