Frame synchronization method and - a device for use in a an ofdm - method -applying a digital communications system

摘要

The present invention relates to a frame synchronization method and a device for use in a digital communications system, in which the ofdm - method. The frame synchronization in front of the direction of which comprises an phases calculation means (100) for calculating the phase values of the tpa - pilot values within a symbol of a transmitter side, received in - phase - and quadrature - phase - channel signal; a d - bpsk - decoder (200) for performing a d - bpsk - demodulation for the calculation of the phases with means (100) is made available by the phase values of the tpa - pilot values and for outputting of the tpa - pilot values within the demodulated symbol; a control signal generator (300) for comparing the demodulated tpa - pilot values with one another in a unit of symbol and for outputting a control signal in accordance with the result of comparison; and a frame synchronization, a unit (400) for confirming a synchronization word position in that the tpa - pilot value of a symbol of the preceding frame with the tpa - pilot value of the corresponding symbol of the current frame is compared, in accordance with the of the control signal - generating means (300) is made available by the control signal, and for outputting a frame synchronizing signal. Consequently, it is possible for the frame synchronization with the use of the in each frame in a tpa - block inserted word, can be achieved without that the hardware size must rise.