Patent ID: 6327481
Filing Date: 2001-12-04
Classification: H04B,Y02D

Abstract:
An apparatus for antenna-switched diversity reception, comprising:demodulating means for demodulating data from a phase-modulated signal received by a selected one of antennas;phase error detecting means for detecting a phase error of each symbol of the received signal as a deviation from an ideal phase;accumulating means for accumulating phase error; andcontrol means for controlling switching between the antennas if an accumulated value of the phase errors is greater than a predetermined value,wherein said control means comprises means for;switching a first antenna temporarily to a second antenna, holding the phase of demodulated clock signal of said second antenna in said demodulating means, selecting either one of the antennas based on a reception status of said first antenna and a reception status of said second antenna, selecting one of the phases of the demodulated clock signals held by said demodulating means, and providing the selected one of the phases to said demodulating means.