Abstract
To achieve a high reliable and energy-saving green communication, we investigate a multisource simultaneous wireless information and power transfer (SWIPT)-based coded cooperation where the relay can realize information decoding and energy harvesting. Firstly, a class of naturally rate compatible low-density parity-check (LDPC) codes–quasi-cyclic repeat-accumulate (QC-RA) codes is introduced, and the joint parity-check matrix corresponding to the QC-RA codes employed by the multiple sources and relay is deduced. Based on the joint parity-check matrix, we jointly design the QC-RA codes to cancel all the short girth cycles. Then, by exploiting the rate compatible characteristic of QC-RA codes, we propose a new SWIPT protocol—codeword splitting protocol for the proposed system, which has the characteristics of lower complexity, higher efficiency, no strictly bit synchronization limitation, and less hardware requirement. The results show that the bit error rate (BER) performance of the proposed system employing jointly designed QC-RA codes clearly outperforms that of general RA codes. Theoretical analysis and numerical simulations also demonstrate the superiority of the proposed codeword splitting protocol.
Highlights
The area of information and communication technology (ICT) plays an important role in the global energy consumption and the greenhouse gas emission [1–3]
2 Methods In this paper, to achieve a high reliable and energysaving green communication, we focus on the multisource simultaneous wireless information and power transfer (SWIPT)-based coded cooperation
The main contributions are summarized as follows: (1) We briefly introduce the rate compatible quasi-cyclic repeat-accumulate (QC-RA) codes, and we deduce the joint parity-check matrix corresponding to the QC-RA codes employed by the multiple sources and relay in the multisource SWIPT-based coded cooperation
Summary
The area of information and communication technology (ICT) plays an important role in the global energy consumption and the greenhouse gas emission [1–3]. In next-generation wireless communication, an unprecedented number of devices will be served and huge amounts of application will be provided, which would result in much more serious challenges. It is extremely urgent to explore energy-saving technologies and energy efficiency protocols for next-generation wireless communication. Simultaneous wireless information and power transfer (SWIPT) technology [4–6] which can realize information decoding (ID) and energy harvesting (EH) simultaneously have drawn great attention. In SWIPTbased communication systems, the nodes can harvest the energy from radio frequency (RF) signals for transmission. It is energy-saving and reduces the carbon
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: EURASIP Journal on Wireless Communications and Networking
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
