Modified conjugate beamforming for cell-free massive MIMO
Modified conjugate beamforming for cell-free massive MIMO
Citation
- Attarifar M, Abbasfar A, Lozano A. Modified conjugate beamforming for cell-free massive MIMO. IEEE Wireless Communications Letters. 2019 Apr;8(2);616-9. DOI: 10.1109/LWC.2018.2890470
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Abstract
We present a modification of conjugate beamforming for the forward link of cell-free massive MIMO networks. This modification eliminates the self-interference and yields a performance that, without forward pilots, closely approaches what would be achieved with such pilots in place. The simplicity of conjugate beamforming is preserved, with no need for matrix inversions, at the expense of fading-rate coordination among the access points.