Paper Info
Title
Robust Radio Mode Selection in Wirelessly Powered Communications with Uncertain Channel Information.
Abstract
Backscatter communications allows the wireless radio to work in passive mode that transmits information by reflecting incident radio frequency signals. It consumes significantly less power compared to the conventional active radio that modulates information on self-generated carrier signals. However, the active radio is deemed more reliable as it can adapt to the varying channel conditions via transmit power control. In this paper, we aim to maximize the throughput of a multi-user network wirelessly powered by a power beacon station (PBS), assuming that each transceiver can switch between the passive and active radio modes. The joint optimization of the radios' mode selection, the PBS' energy beamforming and time allocation is formulated into a mixed-integer nonlinear program (MINLP). Relying on an approximate upper bound of the MINLP, we employ a heuristic mode selection algorithm to determine each user's radio mode under uncertain channel state information. Simulation reveals that passive mode is preferred by the radios with better channel conditions and the active mode will be preferred if we ensure higher system reliability when the channels are subject to uncertainties.
Year
Venue
Field
2017
IEEE Global Communications Conference
Beamforming,Wireless,Transmitter power output,Transceiver,Computer science,Communication channel,Real-time computing,Electronic engineering,Radio frequency,Throughput,Channel state information
DocType
ISSN
Citations 
Conference
2334-0983
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Jiachen Li132.43
Jing Xu27520.03
Gong Shimin342434.89
Xiaoxia Huang49710.62
Ping Wang54153216.93