期刊
IEEE WIRELESS COMMUNICATIONS LETTERS
卷 9, 期 2, 页码 244-248出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LWC.2019.2950624
关键词
Relays; Resource description framework; Signal to noise ratio; Receivers; Surface waves; Wireless communication; Transceivers; Intelligent reflecting surface; DF relaying
资金
- Excellence Center at Linkoping - Lund in Information Technology (ELLIIT)
- Swedish Research Council
The rate and energy efficiency of wireless channels can be improved by deploying software-controlled metasurfaces to reflect signals from the source to the destination, especially when the direct path is weak. While previous works mainly optimized the reflections, this letter compares the new technology with classic decode-and-forward (DF) relaying. The main observation is that very high rates and/or large metasurfaces are needed to outperform DF relaying, both in terms of minimizing the total transmit power and maximizing the energy efficiency, which also includes the dissipation in the transceiver hardware.
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