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125Mbps ultra-wideband system evaluation for cortical implant devices

Title125Mbps ultra-wideband system evaluation for cortical implant devices
Publication TypeConference Paper
Year of Publication2012
AuthorsLuo, Y., C. Winstead, and P. Y. Chiang
Conference Name2012 34th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)
Pagination779 - 782
Date Published09/2012
Conference LocationSan Diego, CA
ISBN Number978-1-4244-4120-4

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.