Patent ID: 7035309
Filing Date: 2006-04-25
Classification: H04B,H04W,Y02D

Abstract:
1. A mobile communication terminal for receiving a spread spectrum signal intermittently, comprising: a receiver which receives said spread spectrum signal; a demodulation unit which demodulates said spread spectrum signal received by the receiver; a first timer started when said receiver changes from a receiving state to a suspension state; a second timer started when said receiver changes from the suspension state to the receiving state, wherein an accuracy of the second timer is higher than that of the first timer and a chip rate of said spread spectrum signal; an intermittent receiving controller which controls said receiving state and said suspension state based on the count by the first timer and the second timer; and a calculator which calculates a timing error which occurred due to the first timer, wherein said intermittent receiving controller controls said demodulation unit so as to resume demodulation operation so that de-spreading said spread spectrum signal attains synchronization based on the timing error after said receiver changes from said suspension state to the receiving state.