Abstract
To reduce hardware complexity of multiple-input multiple-output system with the simultaneous wireless information and power transfer scheme, we propose joint transmission and antenna subarray formation (ASF) receiving optimization scheme which maximizes the achievable rate under the transmit power constraint and the energy harvesting constraint. By relaxing the constraint that ASF matrix should contain limited number of nonzero elements, we employ alternating optimization method to alternatively optimize the transmit covariance matrix and the ASF matrix. We also propose the capacity-loss-based and maximum absolute values algorithms to recover the above constraint on the ASF matrix. It is shown from the simulation results that the proposed schemes outperform the conventional antenna selection scheme.
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Acknowledgments
This work was supported in part by the National Natural Science Foundation of China under Grant 61472458, Grant 61202498, and Grant 61173148, in part by the Guangdong Natural Science Foundation under Grant 2014A030311032, Grant 2014A030313111, and Grant 2014A030310374, in part by the Fundamental Research Funds for the Central Universities under Grant 15lgzd10 and Grant 15lgpy15, and in part by the Scientific Innovation Project of the Education Department of Guangdong Province under Grant 2013KJCX0060.
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Yin, X., Zeng, X., Li, Q. et al. Joint Optimization of Transmission and Antenna Subarray Formation Receiving for MIMO SWIPT Systems. Wireless Pers Commun 87, 215–224 (2016). https://doi.org/10.1007/s11277-015-3039-1
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DOI: https://doi.org/10.1007/s11277-015-3039-1