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In the long term evolution advanced, a user in idle state can activate the discontinuous reception (DRX) to save its energy, and the 3GPP extends the length of a DRX cycle. Therefore, how to configure the extended DRX (eDRX) cycle is a tradeoff between the tracking area update (TAU) cost (the cost of updating a user’s location) and the paging cost (the cost of waking up a user). In this letter, we...
A 2-6 GHz WiMAX low noise amplifier (LNA) is designed and implemented in 0.18-??m CMOS process. This low noise amplifier utilizes a current-reused technique, and a high-pass input matching network. The LNA presents a maximum power gain of 18.4 dB at 2 GHz. The minimum noise figure (NF) is 2.1dB. S11 is less than -16 dB. The total power consumption is 17.4 mW under a 1.8 V power supply. The chip size...
A 2-6 GHz WiMAX low noise amplifier (LNA) is designed and implemented in 0.18-mum CMOS process. This low noise amplifier utilizes improved techniques on current-reuse topology and high-pass input matching network to achieve high gain and low noise. The LNA presents a maximum power gain of 14.6 dB at 6 GHz. The simulated minimum noise figure (NF) is 2.5 dB with less than -12.6 dB S11. The total power...
With critical data gathered during the battlefields, commanders are able to generate more plans and make better decisions more swiftly. Providing up-to-minute medical information such as physical and psychological fitness of each soldier can significantly help these decisions. The most of current medical information gathering system is in a format of speech or text. To collect this data with mobile...
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