Receiver Algorithm Of Simultaneous Wireless Information And Power Transfer Based On Time Switching

The wireless communication grows rapidly in present era, performing as large-scale networks, diversified equipment and so on. Although wasting few power, a lot of energy limited networks like Wireless Information Networks(WS N) are still stumped by wire topology and poor sustainability.Radio Frequency(RF) signals carry information and energy at the same time. Simultaneous Wireless Information and Power Transfer(SWIPT) can charge with energy brought by RF signals, and the receiver can achieve energy harvesting and information decoding simultaneously. But for some receiver, because the received signal energy is limited, the two contradictory, the energy and achieving rate, cannot meet. In this paper, we study on receiver algorithm of SWIPT based on time switching, to achieve trade-of between rate and energy through rational resources allocation.Firstly, this paper focuses on the rate-energy contradiction, and propose a receiver algorithm of SWIPT based on Time Switching(TS), which can provide more energy when keep the same rate. In this paper, the focal point was theoretical analysis of 2×1 MISO system, and did some simulations in order to verify the performance. As the results shown, compared to the conventional Dynamic Power Splitting(DPS) algorithm, the proposed algorithm preforms better on the same conditions.Secondly, the core of the above-described algorithm is setting a reasonable threshold according to the actual situation, wherefore this paper presents an optimal threshold adaptive generation strategy to meet different needs of rate and energy. This strategy adjust iteration termination conditions with objective factors, and get the best threshold ultimately. The optimal strategy further improve the receiver algorithm’s adaptability and portability for different environmental. The simulation results shows the optimality of the threshold obtained, and analyzed optimal threshold on different needs in different situations and different channel conditions.This paper studies the SWIPT receiver algorithm based on time switching, and achieves trade-off between information rate and energy harvesting, and began earlier attempt on expanding innovative research in SWIPT related technologies.