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This paper proposes an image compression algorithm for wireless capsule endoscopy with high compression rate, low computation complexity and high quality. By analyzing the WCE images properties, the algorithm proposes a color space transform to de-correlate the R-G1-G2-B color components in the Bayer pattern image. Then a 4×4 integer Discrete Cosine Transformation is adopted to reduce the spatial...
This paper presents a digital baseband transceiver in 0.18 um CMOS technology. The PHY layer of the baseband supports multi-rate 2FSK modulation and demodulation with fully digital way. The proposed demodulator reaches 10−4 BER for 14dB SNR and 100Kbps. The 2FSK receiver sensitivity reaches −94dbm when PER is 10−2. Using 0.18 um CMOS process, the demodulator occupies an active area of 0.19mm2. The...
An energy-efficient application-specific integrated circuit (ASIC) featured with a work-on-demand protocol is designed for wireless body sensor networks (WBSNs) in medical applications. Dedicated for ultra-low-power wireless sensor nodes, the ASIC consists of a low-power microcontroller unit (MCU), a power-management unit (PMU), reconfigurable sensor interfaces, communication ports controlling a wireless...
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