Mixed-signal demodulator for IEEE 802.15.6 IR-UWB WBAN energy detection-based receiver

• Published in: IET circuits, devices & systems devices & systems, 2018-09, Vol.12 (5), p.523-531
• Main Authors: Jajodia, Babita, Mahanta, Anil, Rafi Ahamed, Shaik
• Format: Article
• Language: English
• Subjects: 16-ary PPM signalling format; 2-ary PPM signalling format; Analog to digital conversion; Analog to digital converters; Antennas; Body area networks; CMOS integrated circuits; CMOS technology; demodulation; Demodulators; Design specifications; digital back-end; Digital switching; Energy; IEEE 802.15.6 IR-UWB WBAN energy detection-based receiver; impulse-radio ultrawideband wireless body area network; integrate-and-digitise approach; M-ary pulse position modulation signalling format; Medical equipment; mixed-signal baseband demodulator; mixed-signal circuit; mixed-signal windowed integrator; Performance evaluation; Pulse position modulation; Radiation; radio receivers; Radio signals; Receivers & amplifiers; Review Article; Signaling; single-ended successive approximation register analogue-todigital converter; size 0.18 mum; telecommunication signalling; Transmitters; ultra wideband communication; Ultrawideband; voltage 1.8 V; WBAN channel; wireless channels; Wireless communications
• ISSN: 1751-858X; 1751-8598; 1751-8598
• DOI: 10.1049/iet-cds.2017.0350

A mixed-signal baseband demodulator for IEEE 802.15.6 impulse-radio ultra-wideband (IR-UWB) wireless body area network (WBAN) energy detection-based receiver is presented. It considers M-ary pulse position modulation (PPM) signalling format conforming to the IEEE 802.15.6 WBAN standard. The demodulator utilises ‘integrate-and-digitise’ approach employing simple mixed-signal circuits. The design is implemented in 0.18 μm CMOS technology operating at 1.8 V supply. The demodulator consists of a mixed-signal windowed integrator, a single-ended successive approximation register analogue-to-digital converter followed by a digital back-end. Further, its performance evaluation is carried out for 2-ary and 16-ary PPM signalling in different WBAN channels.