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4G Technology
The 4G data rates will vary depending on the number of channels that are available, and can be used. The channels that can be used will be cleaner thanks to technologies like adaptive processing, which detects interference on a channel and improves reception by actively switching channels to avoid interference.
4G networks will also use smart antenna technology, which is used to aim the radio signal in the direction of the receiver in the terminal from the base station. When teamed up with adaptive techniques, multiple antennas can cancel out more interference while enhancing the signal.
The 4G plans are still years away, but transitioning from 3G to 4G should be seamless for customers because 4G will have evolved from 3G. Users won't even have to get new phones. Digital applications are getting more common lately and are creating an increasing demand for broadband communication systems. The technical requirements for related products are very high but solutions must be cheap to implement since we are essentially talking about consumer products. For Satellite and for Cable; such cost-efficient solutions are already about for the terrestrial link (i.e. original TV broadcasting) the requirements are so high that the 'standard' solutions are no longer an option. Orthogonal Frequency Division Multiplexing (OFDM) is a technology that allows transmitting very high data rates over channels at a comparable low complexity. Orthogonal Frequency Division Multiplexing is the choice of the transmission method for the European digital radio (DAB) and Digital TV (DVB-T) standard. Owing to its great benefit’s OFDM is being considered for future broadband application such as wireless ATM as well.
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