{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/109596"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/109596","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Using ultrasound as a communication scheme for wireless capsule endoscopy","abstract":"Wireless capsule endoscopy (WCE) has been established as an alternative to traditional video endoscopy because it has several advantages over traditional methods. For example, it can ameliorate the suffering of patients as it does not need intubation, and it can examine the whole small intestine, which cannot be done by traditional methods. However, WCE has one major limitation, which is the picture quality. Traditional endoscopy using a camera attached to a cable can provide high definition 1920*1080 pixels video at 60 frames per second, while most current WCE solutions can only provide video resolution at 320*240 pixels and a frame rate of 2 frames per second. The bottleneck of transmitting high-quality video for WCE is its communication method. Most current WCE solutions use radio frequency (RF) electromagnetic-based communication which limits transmit power and bandwidth. The data rate that can be achieved is less than 1 Mbps, which is not feasible to support high definition video transmission. Using ultrasound as the communication channel is an alternative to RF communication as it has lower attenuation in the human body, and it does not have regulation limits from the federal communications commission (FCC). We explored the use of ultrasound to produce in-body communications. Specifically, we used orthogonal frequency division multiplexing (OFDM) to produce the ultrasound signal and an array receiver to record ultrasound. The proposed method achieved 15 Mbps data rate at a bit error rate (BER) on the order of 10^(-4). At this data rate, we could transmit compressed high definition video with the help of channel coding. In addition, we implemented the transmitter with a field-programmable gate array (FPGA) and connected it to the camera to enable real-time video transmission. An ultrasound imaging research platform was used as the receiver. In this way, visually error-free uncompressed video transmission was verified.","abstract_html":"Wireless capsule endoscopy (WCE) has been established as an alternative to traditional video endoscopy because it has several advantages over traditional methods. For example, it can ameliorate the suffering of patients as it does not need intubation, and it can examine the whole small intestine, which cannot be done by traditional methods. However, WCE has one major limitation, which is the picture quality. Traditional endoscopy using a camera attached to a cable can provide high definition 1920*1080 pixels video at 60 frames per second, while most current WCE solutions can only provide video resolution at 320*240 pixels and a frame rate of 2 frames per second. The bottleneck of transmitting high-quality video for WCE is its communication method. Most current WCE solutions use radio frequency (RF) electromagnetic-based communication which limits transmit power and bandwidth. The data rate that can be achieved is less than 1 Mbps, which is not feasible to support high definition video transmission. Using ultrasound as the communication channel is an alternative to RF communication as it has lower attenuation in the human body, and it does not have regulation limits from the federal communications commission (FCC). We explored the use of ultrasound to produce in-body communications. Specifically, we used orthogonal frequency division multiplexing (OFDM) to produce the ultrasound signal and an array receiver to record ultrasound. The proposed method achieved 15 Mbps data rate at a bit error rate (BER) on the order of 10^(-4). At this data rate, we could transmit compressed high definition video with the help of channel coding. In addition, we implemented the transmitter with a field-programmable gate array (FPGA) and connected it to the camera to enable real-time video transmission. An ultrasound imaging research platform was used as the receiver. In this way, visually error-free uncompressed video transmission was verified.","abstract_has_math":false,"creators":["Kou, Zhengchang"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Electrical & Computer Engr","degree_department":null,"school":null,"contributors":["Oelze, Michael L"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2021,"date_issued":"2021-03-05T21:45:36Z","date_published":"2021-03-05T21:45:36Z","updated_at":"2026-07-22T22:24:50Z","subjects":["Ultrasound","Communication"],"languages":["en"],"rights":["Copyright 2020 Zhengchang Kou"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/109596","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Oelze, Michael L"]},{"key":"dc:creator","label":"Author","values":["Kou, Zhengchang"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2021-03-05T21:45:36Z","2023-03-05T21:47:41Z","2020-11-24","2020-12"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical & Computer Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Ultrasound","Communication"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2020 Zhengchang Kou"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/109596"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Wireless capsule endoscopy (WCE) has been established as an alternative to traditional video endoscopy because it has several advantages over traditional methods. For example, it can ameliorate the suffering of patients as it does not need intubation, and it can examine the whole small intestine, which cannot be done by traditional methods. However, WCE has one major limitation, which is the picture quality. Traditional endoscopy using a camera attached to a cable can provide high definition 1920*1080 pixels video at 60 frames per second, while most current WCE solutions can only provide video resolution at 320*240 pixels and a frame rate of 2 frames per second. The bottleneck of transmitting high-quality video for WCE is its communication method. Most current WCE solutions use radio frequency (RF) electromagnetic-based communication which limits transmit power and bandwidth. The data rate that can be achieved is less than 1 Mbps, which is not feasible to support high definition video transmission. Using ultrasound as the communication channel is an alternative to RF communication as it has lower attenuation in the human body, and it does not have regulation limits from the federal communications commission (FCC). We explored the use of ultrasound to produce in-body communications. Specifically, we used orthogonal frequency division multiplexing (OFDM) to produce the ultrasound signal and an array receiver to record ultrasound. The proposed method achieved 15 Mbps data rate at a bit error rate (BER) on the order of 10^(-4). At this data rate, we could transmit compressed high definition video with the help of channel coding. In addition, we implemented the transmitter with a field-programmable gate array (FPGA) and connected it to the camera to enable real-time video transmission. An ultrasound imaging research platform was used as the receiver. In this way, visually error-free uncompressed video transmission was verified.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2022-12-01","The student, Zhengchang Kou, accepted the attached license on 2020-11-23 at 19:36.","The student, Zhengchang Kou, submitted this Thesis for approval on 2020-11-23 at 19:41.","This Thesis was approved for publication on 2020-11-24 at 15:33.","DSpace SAF Submission Ingestion Package generated from Vireo submission #15947 on 2021-03-04 at 16:32:21","Made available in DSpace on 2021-03-05T21:45:36Z (GMT). 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For example, it can ameliorate the suffering of patients as it does not need intubation, and it can examine the whole small intestine, which cannot be done by traditional methods. However, WCE has one major limitation, which is the picture quality. Traditional endoscopy using a camera attached to a cable can provide high definition 1920*1080 pixels video at 60 frames per second, while most current WCE solutions can only provide video resolution at 320*240 pixels and a frame rate of 2 frames per second. The bottleneck of transmitting high-quality video for WCE is its communication method. Most current WCE solutions use radio frequency (RF) electromagnetic-based communication which limits transmit power and bandwidth. The data rate that can be achieved is less than 1 Mbps, which is not feasible to support high definition video transmission. Using ultrasound as the communication channel is an alternative to RF communication as it has lower attenuation in the human body, and it does not have regulation limits from the federal communications commission (FCC). We explored the use of ultrasound to produce in-body communications. Specifically, we used orthogonal frequency division multiplexing (OFDM) to produce the ultrasound signal and an array receiver to record ultrasound. The proposed method achieved 15 Mbps data rate at a bit error rate (BER) on the order of 10^(-4). At this data rate, we could transmit compressed high definition video with the help of channel coding. In addition, we implemented the transmitter with a field-programmable gate array (FPGA) and connected it to the camera to enable real-time video transmission. An ultrasound imaging research platform was used as the receiver. In this way, visually error-free uncompressed video transmission was verified.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2022-12-01","The student, Zhengchang Kou, accepted the attached license on 2020-11-23 at 19:36.","The student, Zhengchang Kou, submitted this Thesis for approval on 2020-11-23 at 19:41.","This Thesis was approved for publication on 2020-11-24 at 15:33.","DSpace SAF Submission Ingestion Package generated from Vireo submission #15947 on 2021-03-04 at 16:32:21","Made available in DSpace on 2021-03-05T21:45:36Z (GMT). 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