Patent ID: 6792036
Filing Date: 2004-09-14
Classification: H04B,H04L

Abstract:
A method for estimating mobile radio channel impulse responses in a downlink mobile radio channel in a code division multiple access system, which comprises the steps of:providing a common synchronization channel for synchronization of each mobile radio receiver; transmitting, via the common synchronization channel, sequences continuously to a plurality of mobile radio receivers, the sequences being known to each of the mobile radio receivers, the sequences transmitted having pilot symbols for identifying the common synchronization channel, and the pilot symbols being transmitted at points which are known to the mobile radio receivers within a time slot; searching for and identifying the common synchronization channel; and when searching for and identifying the common synchronization channel, evaluating the pilot symbols in the sequences, known to the mobile radio receivers, to jointly estimate delay times and complex amplitudes of the mobile radio channel impulse responses when searching for and identifying the common synchronization channel.