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arXiv · 1403.7697

MIMO Beamforming in Millimeter-Wave Directional Wi-Fi

Keang-Po Ho·Shi Cheng·Jianhan Liu
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Abstract

Beamforming is indispensable in the operation of 60-GHz millimeter-wave directional multi-gigabit Wi-Fi. Simple power method and its extensions enable the transmitting and receiving antenna arrays to form a beam for single spatial stream. To further improve the spectral efficiency in future 60-GHz directional Wi-Fi, alternating least square (ALS) algorithm can form multiple beams between the transmitter and receiver for multi-input-multi-output (MIMO) operations. For both shared and split MIMO architecture, the ALS beamforming algorithm can be operated in both frequency-flat and frequency-selective channels. In the split architecture, MIMO beamforming approximately maximizes the capacity of the beam-formed MIMO channel.

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Keang-Po Ho, Shi Cheng, Jianhan Liu. 2014-03-30. MIMO Beamforming in Millimeter-Wave Directional Wi-Fi. https://arxiv.org/abs/1403.7697

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