A 65-nm CMOS Lossless Bio-Signal Compression Circuit With 250 FemtoJoule Performance Per Bit

Abstract

0000-0003-0613-9698, Dai, Chengliang and Austin, James orcid.org/0000-0001-5762-8614 (2019) A 65nm CMOS lossless bio-signal compression circuit with 250 femtoJoule performance per bit. IEEE Transactions on Biomedical Circuits and Systems. pp.Abstract-A 65nm CMOS integrated circuit implementation of a bio-physiological signal compression device is presented, reporting exceptionally low power, and extremely low silicon area cost, relative to state-of-the-art. A novel 'xor-log2-subband' data compression scheme is evaluated, achieving modest compression, but with very low resource cost. With the intent to design the 'simplest useful compression algorithm', the outcome is demonstrated to be very favourable where power must be saved by trading off compression effort against data storage capacity, or data transmission power, even where more complex algorithms can deliver higher compression ratios. A VLSI design and fabricated Integrated Circuit implementation are presented, and estimated performance gains and efficiency measures for various bio-medical use-cases are given. Power costs as low as 1.2 pJ per sample-bit are suggested for a 10kSa/s data-rate, whilst utilizing a power-gating scenario, and dropping to 250fJ/bit at continuous conversion data-rates of 5MSa/sec. This is achieved with a diminutive circuit area of 155 um 2 . Both power and area appear to be state-of-the-art in terms of compression versus resource cost, and this yields benefit for system optimization.

Magic of 5G Technology and Optimization Methods Applied to Biomedical Devices: A Survey

“…Importantly, in the field of healthcare, advanced technology and methods are required to provide and diagnose whether negative feedbacks exist in live bodies to alert and save lives in a timely manner [57][58][59][60][61][62][63][64][65][66][67][68]. Hereby, this section provides a comprehensive overview of the various employed optimization methods on the biomedical devices.…”