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dc.titleAn asymmetrical QPSK/OOK transceiver SoC and 15:1 JPEG encoder IC for multifunction wireless capsule endoscopy
dc.contributor.authorGao, Y.
dc.contributor.authorCheng, S.-J.
dc.contributor.authorToh, W.-D.
dc.contributor.authorKwok, Y.S.
dc.contributor.authorBenny Tan, K.-C.
dc.contributor.authorChen, X.
dc.contributor.authorMok, W.-M.
dc.contributor.authorWin, H.H.
dc.contributor.authorZhao, B.
dc.contributor.authorDiao, S.
dc.contributor.authorAlper, C.
dc.contributor.authorZheng, Y.
dc.contributor.authorSun, S.
dc.contributor.authorJe, M.
dc.contributor.authorHeng, C.-H.
dc.identifier.citationGao, Y.,Cheng, S.-J.,Toh, W.-D.,Kwok, Y.S.,Benny Tan, K.-C.,Chen, X.,Mok, W.-M.,Win, H.H.,Zhao, B.,Diao, S.,Alper, C.,Zheng, Y.,Sun, S.,Je, M.,Heng, C.-H. (2012). An asymmetrical QPSK/OOK transceiver SoC and 15:1 JPEG encoder IC for multifunction wireless capsule endoscopy. Proceedings - 2012 IEEE Asian Solid-State Circuits Conference, A-SSCC : 341-344. ScholarBank@NUS Repository. <a href="" target="_blank"></a>
dc.description.abstractA chipset including a low power asymmetrical QPSK/OOK transceiver SoC and a 15:1 JPEG image encoder IC is presented for wireless capsule endoscopy. The proposed asymmetrical bi-directional telemetry link supports high-data-rate image transmission with QPSK modulation and low-data-rate actuator control data reception with OOK modulation. To transmit high-quality images with high spectral efficiency, a low power JPEG encoder with compression ratio as high as 15:1 is employed to compress raw image data with subsampling technique in YUV color plane. Implemented in 0.18-μm CMOS, the QPSK TX consumes 5 mW at -6 dBm of output power with 3-Mb/s data rate while the OOK RX achieves -60 dBm of sensitivity at 500-kb/s data rate with 6-mW power consumption. A prototype capsule system has been implemented for wireless endoscopy using the developed chipset. With duty cycling, the average power consumption of TX is 2.5 mW when transmitting at 3-fps frame rate. © 2012 IEEE.
dc.typeConference Paper
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.description.sourcetitleProceedings - 2012 IEEE Asian Solid-State Circuits Conference, A-SSCC
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