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The Media Switch is an end-to-end total solution deployed in data center, broadband central offices, and customer premises. The Architecture is designed to fit the common WAN network hierarchy with high reliability and scalability. The systems that reside in the data center are Media Asset Management System, Media Acquisition Control System, Subscriber Management System, Billing System, Content Management...
The paper is directed by constructivism theory, combined by the practical characteristic of programmer courses, brings forward an “incomplete” assistant teaching system, and expatiates on the ideology, model and overall design of this system. The practice proves that the “incomplete” assistant teaching system based on the constructivism is a new approach to improve teaching quality.
This paper presents experimental results of an analog baseband circuit for China multimedia mobile broadcasting (CMMB) direct conversion receiver in 0.35 um SiGe BiCMOS process. It is the first baseband of CMMB RFIC reported so far. A 8th-order chebyshev low pass filter (LPF) with calibration system is used in the analog baseband circuit, the filter provides 0.5 dB passband ripple and -35 dB attenuation...
We present a single-chip tuner RFIC for the newly established Chinese Mobile Multimedia Broadcasting (CMMB) standard. This mobile digital TV tuner covers the CMMB frequencies from 2.635 GHz to 2.660 GHz. Implemented in a 0.35 um SiGe technology with 4 mm2 die size, this tuner IC achieves noise figure of 2 dB, input sensitivity of -100 dBm, IIP3 of 17 dBm, and total power of 162 mW under a 2.8 V supply.
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