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MIMO SWIPT Systems with Power Amplifier Nonlinearities and Memory Effects

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Document pages: 5 pages

Abstract: In this letter, we study the impact of nonlinear high power amplifier (HPA)on simultaneous wireless information and power transfer (SWIPT), for apoint-to-point multiple-input multiple-output communication system. We derivethe rate-energy (RE) region by taking into account the HPA nonlinearities andits associated memory effects. We show that HPA significantly degrades theachievable RE region, and a predistortion technique is investigated forcompensation. The performance of the proposed predistortion scheme is evaluatedin terms of RE region enhancement. Numerical results demonstrate thatapproximately 24 improvement is obtained for both power-splitting andtime-splitting SWIPT architectures.

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