Advanced Hybrid Beamforming Design for MIMO Systems

Yang, B., Molu, M. and Zhang, L. (2018) Advanced Hybrid Beamforming Design for MIMO Systems. In: 10th IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM 2018), Sheffield, UK, 8-11 July 2018, pp. 80-83. ISBN 9781538647530 (doi: 10.1109/SAM.2018.8448989)

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One of the fundamental problems for hybrid beamformer design in MIMO systems is that, in Singular-Value-Decomposition (SVD) based beamforming, the analog beamformer is limited to constant modulus. In order to solve this issue, an algorithm is proposed in this paper. Specifically, the parallel data streams are expressed mathematically, and then the math expression of the analog beamformer is achieved through maximizing the power of desired data streams while minimizing the power of interference. Then, the digital part of the beamformer is calculated based on a channel equivalent process, i.e., considering the phase response vector of the derived analog beamformers as part of the channel observed by the digital beamformers. Simulations are performed on the proposed algorithm and compared to a recent state-of-the-art technique. The results show that the proposed one outperforms in terms of sphere of application (i.e., different antenna array sizes and channel sparsities).

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Zhang, Professor Lei
Authors: Yang, B., Molu, M., and Zhang, L.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
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