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Resource allocation algorithm for multi-user MIMO-OFDM systems for high throughput WLAN

机译:高吞吐量WLAN的多用户MIMO-OFDM系统的资源分配算法

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摘要

In this paper, a new resource allocation algorithm for the wireless communication systems coupled with multiple transmit receive antennas and orthogonal frequency-division multiplexing (OFDM) is proposed. To transform the M1M0 channel into parallel eigenmode subchannels for each subcarrier, the base station (BS) employs singular value decomposition (SVD) based on channel state information (CSI). In order to maximise the system throughput with a limited power for the target BER, the proposed algorithm assigns the subcarrier to user that has the maximum Euclidean norm of the vector composed of the gains of all spatial subchannels on each subcarrier. After subcarrier-assigning, the Lagrange method is used to obtain an optimal power distribution. Simulation results show that the proposed algorithm gives significant improvement in maximisation of the system throughput.
机译:本文提出了一种新的无线通信系统资源分配算法,该算法与多个发射接收天线和正交频分复用(OFDM)相结合。为了针对每个子载波将M1M0信道转换为并行本征模式子信道,基站(BS)使用基于信道状态信息(CSI)的奇异值分解(SVD)。为了以有限的功率为目标BER最大化系统吞吐量,所提出的算法将子载波分配给用户,该用户具有由每个子载波上所有空间子信道的增益组成的向量的最大欧几里德范数。分配副载波后,使用拉格朗日方法获得最佳功率分配。仿真结果表明,该算法在最大程度提高系统吞吐量方面有很大的改进。

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