Title:
TRANSMITTER, RECEIVER, AND TRANSMITTING AND RECEIVING METHOD
Document Type and Number:
WIPO Patent Application WO/1999/004523
Kind Code:
A1
Abstract:
To improve such radio communication performance as the communication capacity, data transmitting quantity, fading resistance, interference resistance of a digital communication apparatus. Multi-carrier modulation and spectrum spreading are combined by performing the multi-carrier modulation in an information modulating section (90) and, thereafter, spread modulation in a spread modulating section (14) to bring about the merits of them simultaneously. The performance of the communication apparatus is improved by using discrete orthogonal wavelet reverse conversion by means of an M-band wavelet reverse-converting section (29) for the multi-carrier modulation.
Inventors:
MATSUMOTO WATARU (JP)
Application Number:
PCT/JP1997/002439
Publication Date:
January 28, 1999
Filing Date:
July 15, 1997
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
MATSUMOTO WATARU (JP)
MATSUMOTO WATARU (JP)
International Classes:
H04L27/00; H04L27/26; (IPC1-7): H04J11/00
Foreign References:
| JPH05219021A | 1993-08-27 | |||
| JPH06188926A | 1994-07-08 |
Attorney, Agent or Firm:
Mizoi, Shoji (3F 17-10, Ofuna 2-chom, Kamakura-shi Kanagawa 247, JP)
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