soft handoff


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soft handoff

In CDMA cellular phone systems, a smooth transition from one cell to another. Unlike analog FDMA and digital TDMA systems, which use different frequencies in adjacent cells, CDMA uses the same frequencies but codes each conversation differently. As you move between cells, a CDMA phone picks up the same coded signal on the same frequency from both cells. When the original cell stops transmitting, the phone is already receiving the signal from the new cell causing a smooth transition with less chance of a dropped signal. See CDMA.
References in periodicals archive ?
This simulation scenario is totally dedicated for mobility issue in 3x3 [km.sup.2] roaming area under inter Node Bs soft handoff.
This simulation scenario is totally dedicated for mobility issue in 6x6 [km.sup.2] roaming area under inter Node Bs soft handoff.
Kunsriruksakul et al extended the Soft Handoff Work of Homnan and Benjapolakul which used fixed value [23].
Benjapolakul.," The Evaluation of Soft Handoff Performance Between IS-95A and IS-95B/ cdma 2000," Proc.
One of the strongest attributes of CDMA in both existing and proposed systems is soft handoff. During soft handoff, a mobile unit is connected simultaneously to multiple base stations, and the added diversity greatly enhances call reliability.
Lim, "Soft Handoffs in CDMA Mobile Systems," IEEE Personal Communications, vol.