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Optimal scheduling for concurrent transmissions in rate-nonadaptive wireless networks is NP-hard. Optimal scheduling in rate-adaptive wireless networks is even more difficult, because, due to mutual interference, each flow's throughput in a time slot is unknown before the scheduling decision of that slot is finalized. The capacity bound derived for rate-nonadaptive networks is no longer applicable...
A 1V 4.8mW 42.6GHz-45.6GHz CMOS Voltage Controlled Oscillator (VCO) is designed for IEEE 802.15.3c mm-wave wireless communication system. The oscillator provides a center frequency of 44.1GHz and is implemented in 90nm Logic CMOS technology. The oscillator core consumes 4.8mW through 1.0V supply voltage and the active area is 0.05mm2 only. A tuning range of 3.0GHz (42.6GHz-45.6GHz) with maximum control...
This paper presents a low-noise amplifier (LNA) with switching groups for MB-OFDM Group-A, C, D ultra-wideband wireless radio system. The LNA is designed and implemented in TSMC 0.18 um RF CMOS process. Simulation results show that power gain of ll.ldB, input and output matching lower then -8.4 dB and -8.3 dB, and a minimum NF of 3.8 dB can be achieved, while the power consumption is 24.8 mW through...
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