Please use this identifier to cite or link to this item: https://doi.org/10.1109/IPEC.2012.6522695
Title: An asymmetrical QPSK/OOK transceiver SoC and 15:1 JPEG encoder IC for multifunction wireless capsule endoscopy
Authors: 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. 
Issue Date: 2012
Source: 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
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