Soft handover has been introduced in the CDMA digital cellular standard.The name refers to the fact that subscribers stations are in transition regions between radio base stations where the signal from two or more radio base stations may be nearly equal in power, may be simultaneously communicating with two or more radio base stations.This technique may also be considered a form of mobile assisted handover, for IS-95 CDMA subscriber stations continously make power measurements on a list of neighbouring radio base stations, and determine whether or not to request soft handover , and which radio base stations to communicate with in soft handover. Interim Standard 95 (IS-95), is the first CDMA-based digital cellular standard pioneered by Qualcomm. ... General Information Generically (as a multiplexing scheme), code division multiple access (CDMA) is any use of any form of spread spectrum by multiple transmitters to send to the same receiver on the same frequency channel at the same time without harmful interference. ...

Due to the properties of the CDMA signaling scheme, it is possible for a CDMA subsciber station to simultaneously receive signals from two or more radio base stations that are transmitting the same bit stream on the same channel.if the signal power from two or more radio base stations is nearly the same, the subscriber station receiver can combine the received signals in such a way that the bit stream is decoded much more reliably than if only one radio bse station were transmitting to the subscriber station.Now if any one of these signals fades significantly, there will be a relatively high probability of having adequate signal strength from one of the other radio base stations. General Information Generically (as a multiplexing scheme), code division multiple access (CDMA) is any use of any form of spread spectrum by multiple transmitters to send to the same receiver on the same frequency channel at the same time without harmful interference. ... General Information Generically (as a multiplexing scheme), code division multiple access (CDMA) is any use of any form of spread spectrum by multiple transmitters to send to the same receiver on the same frequency channel at the same time without harmful interference. ... Base stations are low-power multi-channel two-way radios which are in a fixed location. ... A bitstream or bit stream is a time series of bits. ... Base stations are low-power multi-channel two-way radios which are in a fixed location. ...

On the reverse link,all the radio base stations that are actively supporting a call in soft handover send the bit stream that they receive back to the MSC, along with information about the quality of the received bits.The MSC examines the quality of all these bit streams and dynamically chooses the bit stream with the highest quality.Again,if the signal degrades rapidly, the chance is still good that a strong signal will be available at one of the other radio base stations that is supporting the call in soft handover. Base stations are low-power multi-channel two-way radios which are in a fixed location. ... BITS may have any of the following meanings: In computer science, bits are binary digits, which may each have the value one or zero. ...