Title :
An optoelectronic link for bidirectional transmission of biological signals
Author :
Annovazzi-lodi, Valerio ; Donati, Silvano
Author_Institution :
Dipartimento de Elettronica, Pavia Univ., Italy
Abstract :
The analysis and design of an optoelectronic transceiver for bidirectional communication between a live laboratory animal and a fixed measurement instrument are presented. The transceiver is based on diffuse infrared radiation and operates even without direct sight of transmitter and receiver. The communication channel is first analyzed in terms of parameters such as attenuation, bandwidth, and S/N ratio. Multiplexing and modulation schemes are considered and the design of circuits used in the miniaturized battery-operated mobile unit are discussed. Examples of experimental in vivo measurements of brain metabolites are presented.
Keywords :
biological techniques and instruments; optoelectronic devices; S/N ratio; attenuation; bandwidth; bidirectional transmission; biological signals; brain metabolites; circuit design; communication channel; diffuse infrared radiation; experimental in vivo measurements; fixed measurement instrument; live laboratory animal; miniaturized battery-operated mobile unit; modulation; multiplexing; optoelectronic link; optoelectronic transceiver; Animals; Attenuation; Bandwidth; Bidirectional control; Communication channels; Instruments; Laboratories; Optical receivers; Transceivers; Transmitters; Animals; Animals, Laboratory; Brain Chemistry; Equipment Design; Infrared Rays; Miniaturization; Polarography; Rats; Signal Transduction;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
