Demod3GActChans

This is a Data Header variable.

Type = Short array

Demod3GActChans is the 3G demod CDP active channel (layer) array. It is the same size as the Y data and indicates which channels are active and their layer. Inactive channels are indicated by a -1 value. Demod3GActChans is available for both cdma2000 and W-CDMA Code Division Multiple Access: One of several digital wireless transmission methods in which signals are encoded using a specific pseudo-random sequence, or code, to define a communication channel. A receiver, knowing the code, can use it to decode the received signal in the presence of other signals in the channel. This is one of several "spread spectrum" techniques, which allows multiple users to share the same radio frequency spectrum by assigning each active user an unique code. CDMA offers improved spectral efficiency over analog transmission in that it allows for greater frequency reuse. Other characteristics of CDMA systems reduce dropped calls, increase battery life and offer more secure transmission. See also IS-95. measurements.