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Low Complexity Beamforming Training Method for mmWave Communications
This paper introduces a low complexity method for antenna sector selection in
mmWave Hybrid MIMO communication systems like the IEEE 802.11ay amendment for
Wireless LANs. The method is backwards compatible to the methods already
defined for the released mmWave standard IEEE 802.11ad. We introduce an
extension of the 802.11ad channel model to support common Hybrid MIMO
configurations. The proposed method is evaluated and compared to the
theoretical limit of transmission rates found by exhaustive search. In contrast
to state-of-the-art solutions, the presented method requires sparse channel
information only. Numerical results show a significant complexity reduction in
terms of number of necessary trainings, while approaching maximum achievable
rate.Comment: Submitted to 2017 International Workshop on Signal Processing
Advances in Wireless Communications (SPAWC
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