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首页> 外文期刊>Communications Letters, IEEE >Joint User Grouping and Resource Allocation for Multi-User Dual Layer Beamforming in LTE-A
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Joint User Grouping and Resource Allocation for Multi-User Dual Layer Beamforming in LTE-A

机译：LTE-A中用于多用户双层波束成形的联合用户分组和资源分配

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摘要

In TD-LTE-A system, dual layer beamforming is introduced to improve throughput of specific users with high SINRs. In order to solve the problem of resource allocation for multi-user dual layer beamforming, a low complexity joint user grouping and resource allocation algorithm is proposed in this letter. We first calculate priorities of all active users according to channel quality and then the resource block (RB) corresponding to the user with highest priority is decided. After that, other users allocated to the above RB are selected based on our proposed user grouping method which considers both inter-user interference and channel quality. The process repeats so that inter-user interference can be reduced and system throughput can be improved. Simulation results show that high system throughput can be realized with the proposed algorithm and the fairness requirement can also be satisfied.
机译：在TD-LTE-A系统中，引入了双层波束成形以提高具有高SINR的特定用户的吞吐量。为了解决多用户双层波束成形的资源分配问题，本文提出了一种低复杂度的联合用户分组和资源分配算法。首先根据信道质量计算所有活动用户的优先级，然后确定优先级最高的用户对应的资源块（RB）。之后，根据我们提出的考虑用户间干扰和信道质量的用户分组方法，选择分配给上述RB的其他用户。重复该过程，以便可以减少用户之间的干扰并可以提高系统吞吐量。仿真结果表明，该算法可以实现较高的系统吞吐量，并且可以满足公平性要求。

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