Bidirectional optical transcutaneous telemetric link for brain machine interface

Liu, T.; Anders, Jens; Ortmanns, Maurits

doi:10.1049/el.2015.1404

Cited by 23 publications

(27 citation statements)

References 6 publications

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“…Optical biotelemetries however that employ semiconductor modulated or pulsed lasers as data transmitters and photodiodes (PDs) as data receivers, can provide several desirable features. These include: improved performance particularly in terms of device size, bit rate, BER, power consumption and e.m. compatibility [2], [11]- [15]. Further improvements of optical biotelemetry links have been achieved by increasing transmitter (i.e.…”

Section: Introductionmentioning

confidence: 99%

A 250Mbps 24pJ/bit UWB-inspired optical communication system for bioimplants

Marcellis

Palange

Faccio

et al. 2017

2017 IEEE Biomedical Circuits and Systems Conference (BioCAS)

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This paper presents an optical communication system, implementing a UWB-inspired pulsed coding technique, for emerging high throughput bio-applications such as brain machine interfaces. The proposed solution employs sub-nanosecond laser pulses that, compared to the state-of-the-art, allows for high bit rate transmissions and reduced power consumption. The overall architecture consist of a transmitter and receiver that employ a pulsed semiconductor laser and a small sensitive area photodiode. This can allow for CMOS integration into a compact silicon footprint (estimated lower than 1 mm 2 in a 0.18 µm technology). The analogue circuits presented herein have been implemented using discrete off-the-shelf components. These provide the bias and drive signals for laser pulse generation, photodiode signal detection and conditioning. Moreover, the digital subsystem for data coding and decoding processes have been implemented on a FPGA board through VHDL description language. Experimental results validate the overall functionality of the proposed system using a diffuser between transmitter and receiver to emulate skin/tissue. This shows the capability of operating at bit rates up to 250 Mbps achieving BER less than 10 −9 and power efficiency as low as 24 pJ/bit. These results enable, for example, the transmission of a 1000-channel neural recording system sampled at 16kHz with 16-bit resolution.

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Section: Introductionmentioning

confidence: 99%

A 250Mbps 24pJ/bit UWB-inspired optical communication system for bioimplants

Marcellis

Palange

Faccio

et al. 2017

2017 IEEE Biomedical Circuits and Systems Conference (BioCAS)

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“…An extension of this study was done in [44], where a data rate of 100 Mbps at a BER of 2 × 10 −7 was achieved with a power consumption of 2.1 mW through a tissue of an anesthetized sheep of 2.5 mm thickness. These results were further extended in [45] to a bidirectional link through a 2 mm porcine skin, achieving 1 Mbps with a power consumption of 290 µW in downlink and 100 Mbps with 3.2 mW in uplink.…”

Section: Optical Wireless Technologiesmentioning

confidence: 87%

Enabling Communication Technologies for Medical Wireless Body-Area Networks

Haddad

Khalighi

2019

2019 Global LIFI Congress (GLC)

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The increasing percentage of aging population and chronic diseases on one hand, and the advances in the development of integrated short range wireless technologies on the other hand, have created a growing interest in the development of medical telemonitoring and telecare systems through the use of medical on-body sensor networks, also known as medical wireless body area networks (WBANs). This paper provides an overview of the main wireless technologies that can be used for WBANs in the medical domain and discusses the major requirements in such applications. While radio frequency technologies are well established solutions for interconnecting WBANs, the high risk of interference in such networks motivates the use of alternative or complementary technologies including optical wireless communications.Index Terms-Wireless sensor networks; body area networks; medical on-body networks; optical wireless communications.

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“…A very low BER with a satisfactory data rate are obtained in [11,13] even if at the expenses of a strong increase of the RF system power consumption and power efficiency. Considering now the solutions based on optical wireless links, 100 Mbps is the highest achieved data rate with reduced power consumptions and good power efficiencies and BER values [4,14,15]. This represents the best trade-off among the main parameters of interest.…”

Section: Discussionmentioning

confidence: 99%

“…These systems require wireless biotelemetry links with high data rate, reduced power consumption, small Bit Error Rate (BER) and good electromagnetic compliance [3][4][5][6][7]. Solutions that make use of carrier-based narrow-band and Ultra-wideband (UWB) Radio Frequency (RF) links, employing Impulse Radio (IR) signal modulation, pose significant challenges when requiring high data rates due to their low power efficiency and electromagnetic compatibility [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Solutions that make use of carrier-based narrow-band and Ultra-wideband (UWB) Radio Frequency (RF) links, employing Impulse Radio (IR) signal modulation, pose significant challenges when requiring high data rates due to their low power efficiency and electromagnetic compatibility [8][9][10][11][12][13]. Optical biotelemetry links, employing semiconductor modulated/pulsed lasers as data transmitters and photodiodes as data receivers, allow the performances of the RF-based systems to be enhanced [4,[14][15][16][17]. In these regards, further improvements have been obtained by increasing the laser power and by using On-Off Keying (OOK) based modulations and large sensitive area photodiodes.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Pulsed Coding Technique Based on Optical UWB Modulation for High Data Rate Low Power Wireless Implantable Biotelemetry

et al. 2016

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This paper reports on a pulsed coding technique based on optical Ultra-wideband (UWB) modulation for wireless implantable biotelemetry systems allowing for high data rate link whilst enabling significant power reduction compared to the state-of-the-art. This optical data coding approach is suitable for emerging biomedical applications like transcutaneous neural wireless communication systems. The overall architecture implementing this optical modulation technique employs sub-nanosecond pulsed laser as the data transmitter and small sensitive area photodiode as the data receiver. Moreover, it includes coding and decoding digital systems, biasing and driving analogue circuits for laser pulse generation and photodiode signal conditioning. The complete system has been implemented on Field-Programmable Gate Array (FPGA) and prototype Printed Circuit Board (PCB) with discrete off-the-shelf components. By inserting a diffuser between the transmitter and the receiver to emulate skin/tissue, the system is capable to achieve a 128 Mbps data rate with a bit error rate less than 10 −9 and an estimated total power consumption of about 5 mW corresponding to a power efficiency of 35.9 pJ/bit. These results could allow, for example, the transmission of an 800-channel neural recording interface sampled at 16 kHz with 10-bit resolution.

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Bidirectional optical transcutaneous telemetric link for brain machine interface

Cited by 23 publications

References 6 publications

A 250Mbps 24pJ/bit UWB-inspired optical communication system for bioimplants

A 250Mbps 24pJ/bit UWB-inspired optical communication system for bioimplants

Enabling Communication Technologies for Medical Wireless Body-Area Networks

A Pulsed Coding Technique Based on Optical UWB Modulation for High Data Rate Low Power Wireless Implantable Biotelemetry

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