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Smart Antenna

Smart antenna is one of the key enhanced technologies in the 3G system. SA (Smart Antenna) reduces the effects of time delay spread, Rayleigh fading, multi-path, channel interference, distinguishes the signals from the same frequency and timeslot, and combines with other multiple access technologies to maximize the use of frequency spectrum resources.

The SA in base stations is a kind of array antenna comprising multiple antenna cells. By adjusting the weight scope and phase of each signal and changing array pattern, it can cancel interferences and increase S/N. In addition, it can measure a user’s direction so that a beam is directed to the user.

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