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In this paper, a low phase noise integer-N PLL has been implemented for GPS applications in a 0.13µm CMOS process. An integer-N PLL based frequency synthesizer is designed to generate differential local oscillator (LO) signals for down-converting the received GPS signals in L1 band to an intermediate frequency (IF) of 4.092MHz. For phase noise reduction, a robust structure of phase frequency detector...
The performance of an ad-hoc network is greatly limited by collisions due to hidden terminals. In this paper, we propose a receiver tracking contention (RTC) scheme, which achieves high throughput by allowing the receivers to assist for channel contention. In RTC, link is the basic unit for channel access contention. Specifically, transmitter is used to contend for the channel and receiver is used...
Hidden terminal and collisions are well-known problems due to broadcasting nature of wireless network. In this paper, we address an efficient MAC protocol to evade the potential collisions caused by hidden terminals, where advanced phycical layer technique, full-duplex, is exploited to coordinate channel contention among nodes within two-hops range. Furhter-more, cooperative channel hopping(CCH) MAC...
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