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Based on the principle of innovative alliance formation process of virtual enterprise cooperative projects, the risk management models including the process of brainchild project market risk and virtual enterprise project cooperation design, co-manufacturing process, and co-marketing process are established. Also, their risk factors definition, identification and assessment are carried out, monitoring...
This paper presents a new self-excitation impulse transmitter based on ring oscillator for UWB transmission. Comparing with the conventional method, the proposed transmitter has good features such as low cost, low complexity and tunable. This transmitter takes advantage of voltage-controlled oscillator (VCO) for carrier generation, while using the emission signal multiplied with the carrier to achieve...
In this paper, a novel programmable UWB transmitter is proposed. The proposed UWB transmitter mainly consists of a programmable cell composed by D registers based on split output true single-phase clock (TSPC) latch and a time-interleave digital-to-analog (TIDAC) converter, fabricated in the SMIC 0.18??m RFCMOS technology. The transmitter can easily change the pulse shape by ten points to adapt to...
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