METHOD FOR UPLINK FRAME CONSTRUCTING AND METHOD FOR SUBCARRIER ALLOCATION IN OFDMA SYSTEM

摘要

The present invention relates to an uplink frame configuration and sub-carrier allocation method in an OFDMA system, in particular selje is the OFDM symbol for transmitting data according to an uplink frame configuration and sub-carrier allocation method in an OFDMA system to operate independently of the ranging symbol separately. In the ; OFDMA system according to the present invention; UL frame configuration method, the actual data is inserted and the first valid symbol interval to be transmitted, to said first front end, and copy the valid symbol interval signal for some interval of the first valid symbol interval, and the first pre-cycle (cyclic prefix ) to configuring each of the plurality of uplink OFDM symbols, the arrangement for the ranging symbol and the front end of the plurality of OFDM symbols of a ranging up of short uplink than the length of the uplink OFDM symbols. ; In this way, the data and the ranging is possible to prevent degradation of system performance due to the difference in performance of the power control of the power control with the ranging signal of the data signal because they do not use the same OFDM symbol.