【摘要】 提出一种多天线正交频分多址(OFDMA)系统中,利用用户优先权排序和贪婪算法结合动态分配子载波的方法,并通过功率的比例补偿分配来提高用户的数据率。仿真结果表明,该方法能使优先权高的实时业务用户获得高质量的服务,可获得比平均功率分配更高的数据率,当天线和载波数越多时数据率性能越好。更多还原

【Abstract】 User priority sorting method combined with greedy algorithm for dynamic subcarrier allocation is proposed for multi-antenna OFDMA system.User’ s data rate performance is improved by proportional -compensated power allocation algorithm.Simulation results show that the proposed algorithm can provide high quality service to real-time user with high priority and obtain higher data rate performance than that of average power allocation.The more antennas and subcarriers,the better the data rate performance of proposed method.更多还原