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Transmit beamforming based on rotation weight and switched sub-codebook

机译:基于旋转权重和切换子码本的发射波束成形

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In this study, we consider a scheduling algorithm for a limited feedback opportunistic beamforming (OBF). Our proposal is based on making Transmit OBF codebook vectors controlled by a rotation weight (RW)in order to obtain almost a zero correlation between the OBF codebook vectors used for the selected spatial channels. Accordingly, we meet the performance of OBF based on the feedback of the full channel state information while reducing the amount of data to be transmitted in the feedback link. The proposed limited feedback OBF - rotation weight increases the probability of the selection of the worst case user by applying a rotation on his best codevector to make zero the angle between his couple codevector and channel response. Then, if this user is selected he would be assigned the best possible symbol rate. To analyze and validate the proposed RW idea performance, simulations have been carried out.
机译:在这项研究中,我们考虑了有限反馈机会波束成形(OBF)的调度算法。我们的建议是基于使发送OBF码本向量受旋转权重(RW)控制的,以便在用于所选空间信道的OBF码本向量之间获得几乎为零的相关性。因此,我们在减少信道在反馈链路中传输的数据量的同时,基于完整信道状态信息的反馈满足了OBF的性能。所提出的有限反馈OBF-旋转权重是通过在其最佳代码向量上进行旋转以使他的夫妇代码向量与信道响应之间的角度为零来增加选择最坏情况用户的可能性。然后,如果选择了此用户,将为他分配最佳符号率。为了分析和验证拟议的RW思想表现,已进行了仿真。

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