An Energy-Efficient Communication System Using Joint Beamforming in Multi-Hop Health Monitoring Sensor Networks
Journal
EURASIP Journal on Wireless Communications and Networking
Journal Volume
2017
Journal Issue
1
Date Issued
2017
Author(s)
Abstract
This paper presents an energy-efficient wireless ad hoc communication system and baseband transceiver for sensor networks that gather vital sign information of patients. The design of the proposed system is aimed to facilitate an energy-efficient and low-latency vital sign data transmission service. Based on this aim, the proposed system adopts multi-hop transmission and joint transmitter-receiver beamforming technique to efficiently transmit data at significantly reduced transmission power. Furthermore, to shorten the transmission latency and reduce channel contention, we proposed a novel Medium Access Control (MAC) mechanism which includes neighborhood discovery, packet collision detection and prioritized transmission scheme based on an Orthogonal Frequency Division Multiple Access (OFDMA) physical layer. Simulation of transmission power, transmission latency, and data rate, together with proposed hardware architecture, were all carried out to verify the effectiveness and feasibility of the proposed system. © 2017, The Author(s).
Subjects
Baseband receiver; Energy-efficient; Joint transmitter-receiver beamforming; Multi-hop transmission; OFDMA; Vital sign monitoring
Other Subjects
Access control; Beamforming; Data communication systems; Energy efficiency; Medium access control; Network layers; Orthogonal frequency division multiplexing; Patient monitoring; Radio transceivers; Sensor networks; Structures (built objects); Transceivers; Transmissions; Transmitters; Wireless ad hoc networks; Wireless sensor networks; Baseband receivers; Energy efficient; Multihop transmission; OFDMA; Vital sign monitoring; Frequency division multiple access
Type
journal article