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首页> 外文期刊>IEEE communications letters >Hybrid zero-forcing beamforming/orthogonal beamforming with user selection for MIMO broadcast channels
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Hybrid zero-forcing beamforming/orthogonal beamforming with user selection for MIMO broadcast channels

机译:用户选择用于MIMO广播信道的混合零强制波束成形/正交波束成形

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摘要

This letter proposes a hybrid transmission scheme by combining zero-forcing beamforming (ZFBF) and orthogonal beamforming (OBF) for the multiple-input multiple-output broadcast channel. This method first utilizes ZFBF for only a part of the scheduled users with approximately orthogonal channels. By further constructing orthogonal beamformers in the null space of the ZFBF user channels, it then employs OBF for the rest of users to fully exploit the spatial dimension. Theoretical analysis, as well as simulation results, verify that our scheme outperforms the conventional ZFBF scheme and OBF scheme with user selection.
机译:这封信提出了一种混合传输方案,该方案将针对多个输入多输出广播信道的迫零波束成形(ZFBF)和正交波束成形(OBF)相结合。该方法首先将ZFBF仅用于具有近似正交信道的部分调度用户。通过在ZFBF用户通道的零空间中进一步构造正交波束形成器,然后对其余用户采用OBF,以充分利用空间维度。理论分析和仿真结果验证了我们的方案在用户选择方面优于传统的ZFBF方案和OBF方案。

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