An analysis of soft handover gain in WCDMA downlink;

It at length introduces the design technique of the hardware and software that single chip microcomputer control 8 channel amplifier s gain automatic change in the meantime, and the internal memory expand, the signal detection and intelligence determine, amplifier gain automatic change etc.

The enhanced soft handoff algorithm is argued.

The simulated results show that this mixer achieves a conversion gain of 7.

The mixer s conversion gain,IP3 linearity and noise figure accord with dynamic range standard of 3G cellular basestations and other high performance wireless basestations receiver.

The performance of limited wavelength conversion and full wavelength conversion in terms of blocking probability,conversion gain and fairness are evaluated and compared under non Poisson traffic mode,and the results based on PVWP show that limited wavelength conversion of degree 3 can reach the performance obtained by full wavelength conversion.

Conventional soft hand-off generally uses constant thresholds.

Simulation results show that the required fade margin for hard hand-off with a finite hysteresis level is larger than that for soft hand-off,and is smaller than that for hard handoff with an isolated cell model.