Using Pulse Width Modulation for Wireless Transmission of Neural Signals in a Multichannel Neural Recording System

Author

Yin, Ming ; Ghovanloo, Maysam

Author_Institution

Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC

fYear

2007

fDate

27-30 May 2007

Firstpage

3127

Lastpage

3130

Abstract

This paper presents a wireless implantable neural recording system (WINeR), which pulse width modulates (PWM) a 15-channel time division multiplexed (TDM) neural signal for telemetry in the industrial-scientific-medical (ISM) band. To evaluate the performance of this wireless PWM-based architecture and indicate its potential sources of error, measurements have been conducted on a setup consisting of the WINeR system as the transmitter and two receivers: 1. An Agilent 89600 vector signal analyzer with 36 MHz bandwidth and 2. A custom built receiver with bandwidth of 75 MHz. In addition, a MATLAB-Simulink model of the entire WINeR system is constructed to simulate the overall behavior of the system. We concluded that the WINeR chip, fabricated in a 0.5 mum standard CMOS process, can acquire and wirelessly transmit up to 320 k samples/sec to a 75 MHz receiver with 8 bits of resolution, equivalent to a wireless data rate of 2.56 Mb/s.

Keywords

CMOS integrated circuits; mathematics computing; neural nets; pulse width modulation; radio receivers; telemetry; time division multiplexing; transmitters; 0.5 micron; 2.56 Mbit/s; 36 MHz; 75 MHz; 8 bit; Agilent 89600 vector signal analyzer; MATLAB-Simulink model; custom built receiver; industrial-scientific-medical band; multichannel neural recording system; neural signals; pulse width modulation; standard CMOS process; telemetry; time division multiplexed; transmitter; wireless implantable neural recording system; wireless transmission; Bandwidth; Computer languages; Pulse width modulation; Semiconductor device modeling; Signal analysis; Space vector pulse width modulation; Telemetry; Time division multiplexing; Transmitters; Wine industry;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on

Conference_Location

New Orleans, LA

Print_ISBN

1-4244-0920-9

Electronic_ISBN

1-4244-0921-7

Type

conf

DOI

10.1109/ISCAS.2007.378093

Filename

4253341