Performance Evaluation of Wireless Communications for Capsule Endoscopy

Kenichi TAKIZAWA; Takahiro AOYAGI; Kiyoshi HAMAGUCHI

doi:10.1587/transcom.E94.B.2488

Performance Evaluation of Wireless Communications for Capsule Endoscopy

Kenichi TAKIZAWA, Takahiro AOYAGI, Kiyoshi HAMAGUCHI

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This letter presents a performance evaluation of wireless communications applicable into a capsule endoscope. A numerical model to describe the received signal strength (RSS) radiated from a capsule-sized signal generator is derived through measurements in which a liquid phantom is used that has electrical constants equivalent to human tissue specified by IEC 62209-1. By introducing this model and taking into account the characteristics of its direction pattern of the capsule and propagation distance between the implanted capsule and on-body antenna, a cumulative distribution function (CDF) of the received SNR is evaluated. Then, simulation results related to the error ratio in the wireless channel are obtained. These results show that the frequencies of 611 MHz or lesser would be useful for the capsule endoscope applications from the view point of error rate performance. Further, we show that the use of antenna diversity brings additional gain to this application.

Publication: IEICE TRANSACTIONS on Communications Vol.E94-B No.9 pp.2488-2491

Publication Date: 2011/09/01

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Online ISSN: 1745-1345

DOI: 10.1587/transcom.E94.B.2488

Type of Manuscript: Special Section LETTER (Special Section on Information Communication Technology for Highly Reliable Human Health Care Services)

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Kenichi TAKIZAWA, Takahiro AOYAGI, Kiyoshi HAMAGUCHI, "Performance Evaluation of Wireless Communications for Capsule Endoscopy" in IEICE TRANSACTIONS on Communications, vol. E94-B, no. 9, pp. 2488-2491, September 2011, doi: 10.1587/transcom.E94.B.2488.
Abstract: This letter presents a performance evaluation of wireless communications applicable into a capsule endoscope. A numerical model to describe the received signal strength (RSS) radiated from a capsule-sized signal generator is derived through measurements in which a liquid phantom is used that has electrical constants equivalent to human tissue specified by IEC 62209-1. By introducing this model and taking into account the characteristics of its direction pattern of the capsule and propagation distance between the implanted capsule and on-body antenna, a cumulative distribution function (CDF) of the received SNR is evaluated. Then, simulation results related to the error ratio in the wireless channel are obtained. These results show that the frequencies of 611 MHz or lesser would be useful for the capsule endoscope applications from the view point of error rate performance. Further, we show that the use of antenna diversity brings additional gain to this application.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.E94.B.2488/_p

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@ARTICLE{e94-b_9_2488,
author={Kenichi TAKIZAWA, Takahiro AOYAGI, Kiyoshi HAMAGUCHI, },
journal={IEICE TRANSACTIONS on Communications},
title={Performance Evaluation of Wireless Communications for Capsule Endoscopy},
year={2011},
volume={E94-B},
number={9},
pages={2488-2491},
abstract={This letter presents a performance evaluation of wireless communications applicable into a capsule endoscope. A numerical model to describe the received signal strength (RSS) radiated from a capsule-sized signal generator is derived through measurements in which a liquid phantom is used that has electrical constants equivalent to human tissue specified by IEC 62209-1. By introducing this model and taking into account the characteristics of its direction pattern of the capsule and propagation distance between the implanted capsule and on-body antenna, a cumulative distribution function (CDF) of the received SNR is evaluated. Then, simulation results related to the error ratio in the wireless channel are obtained. These results show that the frequencies of 611 MHz or lesser would be useful for the capsule endoscope applications from the view point of error rate performance. Further, we show that the use of antenna diversity brings additional gain to this application.},
keywords={},
doi={10.1587/transcom.E94.B.2488},
ISSN={1745-1345},
month={September},}

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TY - JOUR
TI - Performance Evaluation of Wireless Communications for Capsule Endoscopy
T2 - IEICE TRANSACTIONS on Communications
SP - 2488
EP - 2491
AU - Kenichi TAKIZAWA
AU - Takahiro AOYAGI
AU - Kiyoshi HAMAGUCHI
PY - 2011
DO - 10.1587/transcom.E94.B.2488
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E94-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 2011
AB - This letter presents a performance evaluation of wireless communications applicable into a capsule endoscope. A numerical model to describe the received signal strength (RSS) radiated from a capsule-sized signal generator is derived through measurements in which a liquid phantom is used that has electrical constants equivalent to human tissue specified by IEC 62209-1. By introducing this model and taking into account the characteristics of its direction pattern of the capsule and propagation distance between the implanted capsule and on-body antenna, a cumulative distribution function (CDF) of the received SNR is evaluated. Then, simulation results related to the error ratio in the wireless channel are obtained. These results show that the frequencies of 611 MHz or lesser would be useful for the capsule endoscope applications from the view point of error rate performance. Further, we show that the use of antenna diversity brings additional gain to this application.
ER -