Patent ID: 6785257
Filing Date: 2004-08-31
Classification: H04B

Abstract:
A base station for a mobile telephone system utilizing code division multiple access (CDMA) comprising:a first delay profile measuring unit for receiving a random access channel signal, which is input to the base station for setting up a call, detecting at least one peak of the random access channel signal, and determining a first peak time defined by receiving the peak of the random access channel signal; a data channel demodulator which despreads a data channel signal by the random access channel signal based on the first peak time determined by the first delay profile measuring unit; and a second delay profile measuring unit which receives the data channel signal, detects at least one peak of the data channel signal, and determines a second peak time defined by the peak of the data channel signal based on the first peak time, wherein the data channel demodulator despreads the data channel signal based on the second peak time determined by the second delay profile measuring unit, and the first delay profile measuring unit has a first path detector which detects the first peak time and outputs it to the second delay profile measuring unit.