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RF energy harvesting (RFEH) is a promising technology for energy requirements of wireless communication nodes. However, providing sufficient amount of energy to ensure self-sufficient devices based on RFEH may be challenging. In this paper, the use of diversity combining in RFEH systems is proposed to increase the amount of harvested energy. The power consumption of diversity combining process is...
The paper introduces a new concept of groupwise generalized selection combining (GGSC), denoted by GGSC(n, m, L) , in which there are n groups of generalized selection combining GSC(m, L) where the largest m (in SNR) elements are selected from L independent elements. The paper proves that GGSC(n, m, L) has the same diversity order (DO) as that of MRC with nL elements, denoted by MRC(nL) and GSC(nm,...
Dual branch switched diversity in compact wireless devices is considered. A simple technique for protecting a compact device from diversity loss incurred by antennas proximity is proposed. The technique is based on implementing the Karhunen-Loeve transform prior to down-conversion to baseband. The implementation reduces to constant and straightforward summation and subtraction of the two antennas...
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