2017/10/06 by Ivana Nikoloska, Nikola Zlatanov, Nikoloska, Ivana +3
Engineering · #Energy Harvesting in Wireless Networks #FOS: Computer and information sciences #Full-Duplex Wireless Communications #Information Theory (cs.IT) #Wireless Communication Security Techniques
paper · pdf · doi:10.48550/arxiv.1710.02273
openalex publication_date 2017/10/06 · openalex created_date 2022/10/03 · openalex updated_date 2026/07/28
In this paper, we investigate the capacity of a point-to-point, full-duplex\n(FD), wirelessly powered communication system impaired by self-interference.\nThis system is comprised of an energy transmitter (ET) and an energy harvesting\nuser (EHU), both operating in a FD mode. The ET transmits energy towards the\nEHU. The EHU harvests this energy and uses it to transmit information back to\nthe ET. As a result of the FD mode, both nodes are affected by\nself-interference. The self-interference has a different effect at the two\nnodes: it impairs the decoding of the received signal at the ET, however, it\nprovides an additional source of energy for the EHU. This paper derives the\ncapacity of this communication system assuming a processing cost at the EHU and\nadditive white Gaussian noise channel with block fading. Thereby, we show that\nthe capacity achieving scheme is relatively simple and therefore applicable to\ndevices with limited resources. Moreover, our numerical results show\nsignificant improvements in terms of data rate when the capacity achieving\nstrategy is employed compared to half-duplex transmission. Moreover, we show\nthe positive and negative effects of the self-interference at the EHU and the\nET, respectively. Furthermore, we show the crippling effect of the processing\ncost and demonstrate that failing to take it into consideration gives a false\nimpression in terms of achievable rate.\n