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Adaptive Resource Allocation with Multiuser Interference Cancellation for MIMO OFDM Systems

机译:MIMO OFDM系统中具有多用户干扰消除的自适应资源分配

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The challenging issue in multiuser MIMO-OFDM system is to cancel multi-access interference (MAI) when different users share the same subcarrier. Also, the presence of MAI makes the resource allocation problem very complicated. Hence it is essential to find the optimal transmit and receive weight vectors, to reduce MAI and to adaptively assign resources to meet the QoS requirements. In this paper, Block Diagonalization (BD) with Waterfilling power allocation is considered. This BD with Waterfilling power allocation algorithm increases the system capacity with zero MAI. In order to increase the system capacity further, BD with power and subcarrier allocation is proposed and analyzed their performance. The simulation results show that there is significant improvement in system capacity also guaranteeing zero MAI.
机译:在多用户MIMO-OFDM系统中,具有挑战性的问题是当不同用户共享同一子载波时,消除多址干扰(MAI)。而且,MAI的存在使资源分配问题变得非常复杂。因此,必须找到最佳的发送和接收权重向量,以减少MAI并自适应分配资源以满足QoS要求。在本文中,考虑了具有填充功率分配的块对角化(BD)。这种带有注水功率分配算法的BD以零MAI增加了系统容量。为了进一步增加系统容量,提出了带有功率和子载波分配的BD,并对其性能进行了分析。仿真结果表明,系统容量得到了显着提高,还保证了零MAI。

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