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|Title:||An asymmetrical QPSK/OOK transceiver SoC and 15:1 JPEG encoder IC for multifunction wireless capsule endoscopy||Authors:||Gao, Y.
Benny Tan, K.-C.
|Issue Date:||2012||Citation:||Gao, 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. https://doi.org/10.1109/IPEC.2012.6522695||Abstract:||A 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.||Source Title:||Proceedings - 2012 IEEE Asian Solid-State Circuits Conference, A-SSCC||URI:||http://scholarbank.nus.edu.sg/handle/10635/69292||DOI:||10.1109/IPEC.2012.6522695|
|Appears in Collections:||Staff Publications|
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