125Mbps ultra-wideband system evaluation for cortical implant devices.
This paper evaluates the performance of a 125Mbps Impulse Ratio Ultra-Wideband (IR-UWB) system for cortical implant devices by using low-Q inductive coil link operating in the near-field domain. We examine design tradeoffs between transmitted signal amplitude, reliability, noise and clock jitter. The IR-UWB system is modeled using measured parameters from a reported UWB transceiver implemented in 90nm-CMOS technology. Non-optimized inductive coupling coils with low-Q value for near-field data transmission are modeled in order to build a full channel from the transmitter (Tx) to the receiver (Rx). On-off keying (OOK) modulation is used together with a low-complexity convolutional error correcting code. The simulation results show that even though the low-Q coils decrease the amplitude of the received pulses, the UWB system can still achieve acceptable performance when error correction is used. These results predict that UWB is a good candidate for delivering high data rates in cortical implant devices.
Department of Electrical and Computer Engineering, UMC 4120, Utah State University, Logan, UT 84322, USA.
Yi
Y
Luo
Chris
C
Winstead
Patrick
P
Chiang
D001698:Biomedical Engineering; D002540:Cerebral Cortex / Q000502:physiology* / Q000601:surgery*; D003198:Computer Simulation; D006801:Humans; D008959:Models, Neurological; D058117:Neural Prostheses / Q000706:statistics & numerical data; D058998:Remote Sensing Technology / Q000295:instrumentation; D013686:Telemetry / Q000295:instrumentation; D059015:Wireless Technology / Q000295:instrumentation