| 摘要 |
<p>A signal transmitter and a receiver are provided to prevent an accumulative error difference caused by a minute time error, and to improve an SNR(Signal to Noise Ratio). A signal transmitter includes an inverse discrete Fourier transforming module(140), a cyclic prefix adding module(150), a preamble adding module(160), and a digital-analog transforming module(170). The inverse discrete Fourier transforming module(140) receives specific modulated data, performs inverse Fourier discrete Fourier transformation, and generates a first symbol. The cyclic prefix adding module adds a pre-set cyclic prefix to the first symbol, and generates a second symbol. The preamble adding module adds a set preamble to the second symbol, and generates a third symbol. The digital-analog transforming module transforms the third symbol, added with the cyclic prefix and the preamble, to an analog symbol.</p> |
