Patent ID: 6577686
Filing Date: 2003-06-10
Classification: H04B

Abstract:
A receiver in time division transmission system for transmitting data by dividing in time into blocks called time slots, comprising:(a) converting means provided individually in plural antennas for converting the signal received on each antenna into a base band signal, (b) combining means for weighting said base band signal by the weight of complex number and for summing said weighted base band signal with the other said weighted base band signal, (c) deciding means for deciding the transmission symbol from the combined base band signal added and combined by said combining means, (d) reference signal generating means for generating a known symbol to be transmitted as a reference signal, (e) error detecting means for issuing an error signal between said combined base band signal and reference signal, and (f) weight calculating means for calculating the weight corresponding to each antenna from said error signal and base band signal, and updating this weight sequentially, wherein the updating amount of each weight in said weight calculating means is the product of said error signal, step size function and each base band signal, and said step size function is a function becoming smaller according to the lapse of time in each time slot, and is initialized at every change of time slot.