| 摘要 |
<p>Digital communication equipment which is increased in communication capacity and data transmission quantity and improved in such radio communication performances as the fading resistance, interference resistance, etc. Multi-carrier modulation and spread spectrum are coupled with each other so as to obtain their merits by performing the multi-carrier modulation by means of a DMT modulating section (90) and, thereafter, diffusion modulation by means of a diffusion modulating section (14). In addition, the performance of the communication equipment is further improved by using discrete orthogonal wavelet inversion by means of an M-band wavelet inverting section (29) for the multi-carrier modulation.</p> |
