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 ?
Benjapolakul ,"Adaptation of CDMA Soft Handoff Thresholds using Fuzzy Inference System", IEEE ICPWC 2000, pp.
Qualcomm has yet to produce any legitimate challenge to the validity of the Ericsson soft handoff patents.
Passengers in AT&T's CDMA car were able to experience first-hand the soft handoff between cell sites -- no clicks or interference as the car moved from one cell site to the next.
Coverage overlaps can tie up network resources with extended soft handoffs, or reduce data rate and voice call capacity with pilot pollution (i.
EdgePoint PRO has an unrivaled clustering feature that assures soft handoffs of calls between multiple units and the macro network.
As demand for more advanced forms of mobility is fueled by the introduction of PDAs and smartphones, certified products will include support for soft handoffs, mobile VoIP, and real-time applications.
A CDMA2000 voice call was also completed with soft handoffs.