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针对多用户OFDMA系统,提出了一种基于遗传模拟退火算法的多用户OFDMA系统资源分配策略。在资源分配时,首先假设总功率在载波间均等分配,随后根据比例速率要求确定每个用户需要的子带数,最后引入遗传模拟退火算法求解联合优化中的子带分配,在保证用户间公平性的前提下最大化系统吞吐量。仿真结果表明,该策略系统容量较大,并且近似满足了不同用户间传输速率比例性要求。
For multi-user OFDMA system, a resource allocation strategy based on genetic simulated annealing algorithm for multi-user OFDMA system is proposed. In the resource allocation, we first assume that the total power is equally distributed among the carriers, and then determine the number of subbands required by each user according to the requirements of the proportion rate. Finally, the introduction of the genetic simulated annealing algorithm solves the subband allocation in the joint optimization, ensuring fairness among users Maximize the system throughput under the premise of sexual. The simulation results show that the strategy system has a large capacity and approximately meets the requirements of the transmission rate ratio between different users.