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SC-FDMA is encoded and transmitted from the handset where there are power tradeoffs. This encoding is better than OFDMA for the handset for the following related reasons: Reduces peak to average power ratio Increases efficiency of the power amplifier Increases battery life So at the base station they can employ transmitters that can handle a higher peak ...


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What you are asking in similar to how the beam in a CRT monitor is modulated to make lighter and darker areas on the screen. The lasers used in these devices can be electronically controller to vary their light output. This is done in sync with the laser beam being mechanically swept across the drum. As the laser hits each spot on the drum, the ...


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In the general case, you can't. Not all processes are reversible. For example, a Cadmium-sulfide photoresistor won't emit light when you apply a voltage to it. There really shouldn't be the expectation that this would work in general since there are so many every day examples. Your car doesn't put gas back into the tank when going down a hill. You don't ...


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