| 摘要 |
<p>A system is described which achieves an increased rate of transmission by transmitting multiple symbols in one symbol time. The information in the overlapping symbols can be recovered if the symbol used for transmission is chosen so that a subset of the samples representing the symbol has an inverse. The construction of suitable symbols is illustrated. Effective operation of the system depends on equalization which will recover the baseband signal shape. Methods of equalization are depicted which are suitable for use with this system including equalization realized by predistorting the signal at the transmitter so that it arrives at the receiver undistorted. The invention is applied to baseband and passband systems and the application of predistortion equalization to the fading passband channel is described.</p> |
