Patent ID: 7342909
Filing Date: 2008-03-11
Classification: H04B,H04W

Abstract:
1. A CDMA transmitter comprising: spreading means for employing a spreading code allocated for a self-channel to spread a transmission signal, for which a time slot having a predetermined cycle and having a different timing from that of a different channel is allocated to a synchronization time slot for the self-channel, and which is synchronized with a transmission signal for the different channel and for outputting a spreading signal; power control means for increasing, until greater than an amplitude for a spreading signal for a different period, an amplitude for a period for the synchronization time slot of the self-channel that is included in the spreading signal, and for outputting the resultant signal as a modulation signal; and no signal power setting means for performing a no signal power setting for the period for the synchronization time slot of the different channel that is included in the modulation signal, wherein a sync bit is inserted into the synchronization time slot.