Differential Chaos Shift Keying-Based Wireless Power Transfer With Nonlinearities

Differential Chaos Shift Keying-based Wireless Power Transfer over a Frequency Selective Channel

“…We consider a simple point-to-point WPT topology, where the transmitter employs a DCSK generator and the receiver consists of an analog correlator, followed by an EH circuit [13], as shown in Fig. 1.…”

“…Specifically, the received power is proportional to r −a , where r is the transmitter-receiver distance and a > 0 denotes the pathloss exponent. Moreover, unlike [13], a generalized frequency selective fading channel is considered here. In wideband wireless communication systems, a commonly used channel model is the two-ray fading channel model [14].…”

“…Hence, by incorporating a ψ-bit analog correlator at the receiver prior to the harvester, the average harvested power is [13]…”

“…To exploit the benefits of both DCSK and WPT, there are few works in the literature that investigate DCSK-based SWIPT, e.g. [10]- [13]. The work in [10] proposes a short-reference DCSKbased SWIPT architecture to achieve higher data rate than the conventional system.…”

“…However, the aforementioned studies consider a simplified linear model for the EH, and as a result, they are independent of the circuit characteristics as well as the design of excitation waveforms [2]. In this context, the authors in [13] propose a novel DCSKbased WPT architecture based on the nonlinearities of the EH process. Furthermore, they propose a WPT-optimal DCSKbased waveform that results in enhanced energy transfer.…”