基于多用户MIMO-OFDM系统的分步资源分配  

Two-step Resource Allocation for Multiuser MIMO-OFDM System

作　　者：张扬军[1] 徐家品[1] 

机构地区：[1]四川大学电子信息学院,四川成都610064

出　　处：《通信技术》2013年第2期5-7,共3页Communications Technology

摘　　要：针对MIMO-OFDM多用户系统,在保证用户服务质量QoS(主要指误码率和速率要求)的情况下,提出了一种分步资源分配算法。在发射功率最小化准则下,算法先根据用户传输速率要求和用户的信道增益对用户进行子载波组分配,再在用户子载波上的所有特征子信道上进行自适应的比特分配。仿真结果表明,该算法复杂度低,降低了系统发射功率,获得良好的系统性能。For multi-user MIMO-OFDM systems, a two-step resource allocation algorithm based on the user＇ s QoS is proposed. With the criterion of minimizing the transmitting power, this algorithm first allocates the subcarriers to the users rate requirements and channel gains, then all the participate in the bit allocation process. Numerical algorithm could reduce the total transmitting power in accordance with the users＇ transmission subchannels of the users＇ sub-carriers simulation results show that the proposed and achieve a good system performance.

关 键 词：MIMO-OFDM多用户 子载波分配 比特分配 发射功率 

分 类 号：TN929.5[电子电信—通信与信息系统]