One Sub-carrier Allocation Algorithm in the WPDM-CDMA System Based on Joint Function

In the multi-carrier communication system physical channel environment between the user and the base station are different, a reasonable allocation of sub-carriers in each user will be beneficial to improve the performance of communication systems, quality of service and resource. This paper make WPDM-CDMA which one implementation of multi-carrier communication system an object to research sub-carrier allocation algorithm in the multi-user. The algorithm takes into account the fairness of the allocation between users, so choose of two functions relative bit requirement and transmission power to allocate sub-carrier. Using MATLAB software simulate, then compare with grouping sub-carrier allocation algorithm and the interval sub-carrier allocation algorithm in BER performance, the computation time, fairness, and the total power consumption.