Title :
A high-rate long-range wireless transmission system for multichannel neural recording applications
Author :
Miranda, Henrique ; Gilja, Vikash ; Chestek, Cindy ; Shenoy, Krishna V. ; Meng, Teresa H.
Author_Institution :
Stanford Univ., Stanford, CA, USA
Abstract :
We report a high-rate, low-power wireless transmission system (named HermesD) to aid the research in neural prosthetics for motor disabilities, by recording and transmitting neural activity from electrode arrays implanted in rhesus monkeys. This system supports the simultaneous transmission of 32 channels of broadband data sampled at 30 kSps, 12 bit/sample, using FSK modulation on a 3.95 GHz carrier, with a link range extending over 20 m. The channel rate is 24 Mbit/s and the bit stream includes synchronization and error detection mechanisms. The power consumption, approximately 142 mW, is low enough to allow the system to operate for about two days, using two 3.7 V / 1100 mAh Li-Ion battery packs. The transmitter was designed using off-the-shelf components and is small enough to fit on a printed circuit board with 20 cm2. The receiver is composed of several submodules in a bench-top configuration and interfaced to a computer for data storage and processing. This system can be easily scaled up in terms of the number of channels and data rate, being an appropriate test platform for a future 96-channel version of the system.
Keywords :
biomedical electrodes; biomedical telemetry; error detection; frequency shift keying; medical disorders; neurophysiology; prosthetics; radio transmitters; FSK modulation; biotelemetry; bit rate 24 Mbit/s; broadband data sampling; data processing; data storage; electrode arrays; error detection mechanism; frequency 3.95 GHz; high-rate long-range wireless transmission system; low-power wireless transmission system; motor disability; multichannel neural recording; neural activity; neural prosthetics; synchronization; voltage 3.7 V; Batteries; Computer interfaces; Electrodes; Energy consumption; Frequency shift keying; Memory; Printed circuits; Prosthetics; System testing; Transmitters; Neural prosthetics; high-rate FSK transmitter; in vivo neural recording; wireless high-rate multichannel biotelemetry;
Conference_Titel :
Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-3827-3
Electronic_ISBN :
978-1-4244-3828-0
DOI :
10.1109/ISCAS.2009.5117993
