Patent ID: 7130293
Filing Date: 2006-10-31
Classification: H04L

Abstract:
1. A receiver of multicarrier signal for a mobile communication system, the system transmits, by using a plurality of subcarriers, a data sequence doubly multiplied by a short code and a long code chosen from a long code group, comprising: a receiving element receiving the multicarrier signal containing the subcarriers, at least one of which includes a synchronization signal transmitted therein, multiplied only by a spreading code for synchronization; a first correlator detecting correlation values between the received multicarrier signal and synchronization signal replicas; a timing detector detecting an FFT timing and a received timing of long code according to the correlation values; an FFT unit carrying out FFT at the detected FFT timing, to separate the received multicarrier signal a plurality of subcarrier components; a second correlator detecting, at the detected received timing of long code, correlation values between the subcarrier components and a plurality of replicas of data sequence doubly multiplied by a short code and each long code chosen from a long code group; a code detector detecting, according to the detected correlation values, a long code that is scrambling the received multicarrier signal; and a demodulation circuit demodulating the data sequence from the received multicarrier signal by using the received timing of long code and the long code.