| 摘要 |
A method and an apparatus for transmitting and receiving data in a multiband OFDM(Orthogonal Frequency Division Multiplexing) network are provided to reduce a data error by dividing a signal band into plural groups and transmitting the same signals in the same group. When a data is inputted, a scrambler(110) changes a frequency. A convolutional encoder(120) accumulates the data from the scrambler and outputs the accumulated result. A puncturer(130) removes a position bit of the data from the convolutional encoder to decrease a data size. A bit interleaver(140) decreases an error in the data from the puncturer. A constellation mapping module(150) allocates the data from the bit interleaver to a signal waveform. An IFFT module(160) performs an FFT(Fast Fourier Transform) on the data from the constellation mapping module. A DAC(170) converts the digital data from the IFFT(Inverse Fast Fourier Transform) module to an analog signal. A mixer(180) adds a time-frequency code to the signal from the DAC and transmits the added result through an antenna.
|
