A Pulsed Coding Technique Based on Optical UWB Modulation for High Data Rate Low Power Wireless Implantable Biotelemetry

Electronics

Timothy G. Constandinou¹  Guido Di Patrizio Stanchieri²  Luca Nubile²  Marco Faccio²  Andrea De Marcellis²  Elia Palange² 

[1] Centre for Bio-Inspired Technology, Imperial College London, London SW7 2AZ, UK;Department of Industrial and Information Engineering and Economics, University of L’Aquila, L’Aquila 67100, Italy;

关键词: high data rate low power link;    optical ultra-wideband modulation;    pulsed coding technique;    wireless implantable biotelemetry;   

DOI  :  10.3390/electronics5040069

来源: DOAJ

【 摘 要 】

This paper reports on a pulsed coding technique based on optical Ultra-wideband (UWB) modulation for wireless implantable biotelemetry systems allowing for high data rate link whilst enabling significant power reduction compared to the state-of-the-art. This optical data coding approach is suitable for emerging biomedical applications like transcutaneous neural wireless communication systems. The overall architecture implementing this optical modulation technique employs sub-nanosecond pulsed laser as the data transmitter and small sensitive area photodiode as the data receiver. Moreover, it includes coding and decoding digital systems, biasing and driving analogue circuits for laser pulse generation and photodiode signal conditioning. The complete system has been implemented on Field-Programmable Gate Array (FPGA) and prototype Printed Circuit Board (PCB) with discrete off-the-shelf components. By inserting a diffuser between the transmitter and the receiver to emulate skin/tissue, the system is capable to achieve a 128 Mbps data rate with a bit error rate less than 10−9 and an estimated total power consumption of about 5 mW corresponding to a power efficiency of 35.9 pJ/bit. These results could allow, for example, the transmission of an 800-channel neural recording interface sampled at 16 kHz with 10-bit resolution.

【 授权许可】

Unknown