In this paper, we propose a reconfigurable intelligent surface (RIS)-assisted frequency-modulated (FM) differential chaos shift keying (DCSK) scheme with simultaneous wireless information and power transfer (SWIPT), called RIS-FM-DCSK-SWIPT scheme, for low-power, low-cost, and high-reliability wireless communication networks. In particular, the proposed scheme is developed under a non-linear energy-harvesting (EH) model which can accurately characterize the practical situation. The proposed RIS-FM-DCSK-SWIPT scheme has an appealing feature that it does not require channel state information, thus avoiding the complex channel estimation. We derive the theoretical expressions for the energy shortage probability and bit error rate (BER) of the proposed scheme over the multipath Rayleigh fading channel. We investigate the influence of key parameters on the performance of the proposed scheme in two different scenarios, i.e., RIS-assisted access point (RIS-AP) and dual-hop communication (RIS-DH). Finally, we carry out various Monte-Carlo experiments to verify the accuracy of the theoretical derivation, and illustrate the performance advantage of the proposed scheme over the existing DCSK-SWIPT schemes.
翻译:在本文中,我们提议对低功率、低成本和高可靠性的无线通信网络采用可重新整合的智能表面(RIS)辅助频率调制(FM)差分混乱变换密钥(DCSK)办法,同时使用无线信息和电力传输(SWIPT),称为RIS-FM-DCSK-SWIPT)办法,称为RIS-FM-DCSK-SWIPT(SWIPT)办法,用于低功率、低成本和高可靠性的低电、低成本和高可靠性无线通信网络;特别是,拟议办法是在非线性能源收获(EH)模式下制定的,可以准确描述实际情况;拟议的RIS-FM-DCSK-SK-SWIP(RI-DH)办法具有吸引力,它不需要频道状态信息,从而避免了复杂的频道估计;我们从理论上的能源短缺概率和位误差率(BERC)办法的理论表达方式,我们调查了拟议办法在两种不同情况下对业绩的主要参数的影响,即RIS辅助接入点(RI-AP)和双波通信(RI-DD)方案的现有优势。