FDM BASED CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF AND SYSTEM THEREOF

摘要

A cell searching method in an OFDM(Orthogonal Frequency Division Multiplexing) cellular system, a frame transmitting method, and a frame transmitter are provided to reduce a cell searching time in the OFDM cellular system by reducing a configuration complexity of a cell searching unit. A synchronization detector(622) includes correlation calculators(701-A,701-B), a signal coupler(702), an accumulation unit(703), and a timing detector(710). Outputs from the correlation calculators are accumulated in the accumulation unit through the signal coupler. The correlation calculator generates 4800 units in respective synchronization blocks. The timing detector detects a position of a sample having a peak value from correlation values, and determines the detector sample position as synchronous channel symbol timing. The accumulation unit adds the respective correlation values for the sample positions to the correlation value corresponding to a position, which is spaced from the respective sample positions by a length of the synchronization block.