Title :
A 33μW/node Duty Cycle Controlled HBC Transceiver system for medical BAN with 64 sensor nodes
Author :
Hyungwoo Lee ; Hyunwoo Cho ; Hoi-Jun Yoo
Author_Institution :
Dept. of Electr. Eng., KAIST, Daejeon, South Korea
Abstract :
A low power Human Body Communication (HBC) Transceiver (TRX) with Duty Cycle Control (DCC) is proposed for low energy medical body area network (BAN) system To achieve a fully IEEE standard compatible system with a low power consumption, 1) a MAC scheduler and 2) a HBC modem with maximum likelihood detection (MLD) scheme are proposed. Thanks to DCC, 38% average duty and 96.6% quality of service (QoS) are achieved with 2.77mW power consumption for the 64 sensor nodes and a hub. The RF circuits in the TRX fully satisfy the WBAN standard requirements. And the reconfigurable LNA is designed to monitor power consumption with the received signal strength. The Received Signal Strength Indicator (RSSI) is adopted to support DCC and RF TRX, and zero-delay cipher (ZDC) is used to protect the data privacy without extra network delay. The proposed TRX chip occupies 12.5mm2 in 0.13μm CMOS technology.
Keywords :
CMOS integrated circuits; access protocols; biomedical communication; body area networks; low noise amplifiers; low-power electronics; maximum likelihood detection; modems; quality of service; radio transceivers; radiofrequency integrated circuits; CMOS technology; DCC; HBC modem; HBC transceiver; IEEE standard; MAC scheduler; MLD; QoS; RF circuits; RSSI; ZDC; data privacy; duty cycle control; low power consumption; low power human body communication; maximum likelihood detection; medical BAN; medical body area network; power 2.77 mW; quality of service; received signal strength indicator; reconfigurable LNA; sensor nodes; size 0.13 mum; zero-delay cipher; Delays; Frequency shift keying; Modems; Power demand; Quality of service; Radio frequency; Standards; Duty-cycle control; Human Body Communication; IEEE 802.15.6. Wireless BAN standard; Low Energy; MAC scheduler; Wireless Sensor Network (WSN);
Conference_Titel :
Custom Integrated Circuits Conference (CICC), 2014 IEEE Proceedings of the
Conference_Location :
San Jose, CA
DOI :
10.1109/CICC.2014.6946058
