Title:
ASYNCHRONOUS DIGITAL SUBSCRIBER LINE TRANSMISSION/ RECEPTION DEVICE USING DUPLEX LINK DISCRETE MULTIPLEX TONE
Document Type and Number:
Japanese Patent JP3511166
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To transmit/receive low speed data in a low band link and high speed data in a high band link by installing a means modulating a low band signal string and a high band signal string, putting together the modulated low band signal string and the modulated high band signal string and generating a transmission signal.
SOLUTION: The transmission/reception device is constituted of a modulation/ transmission part and a demodulation/reception part. The duplex links of mutually independent high band and low band are provided. High speed data such as a packet and a multiframe are transmitted through a high band link Rb and low speed data such as general telephone service and a general information communication network signal are transmitted through a low band link Ra. At that time, the modulation/ transmission part separates general telephone service and the signal of a general information communication network in the low band and the packet and the multiframe of the high band and resolves them into the number (r) of keys decided by a key allocation part 35 and 255-r-pieces of different partial signals. They are modulated and a transmission signal X[n] is generated.
Inventors:
Kin, Toshaku
Application Number:
JP35341599A
Publication Date:
March 29, 2004
Filing Date:
December 13, 1999
Export Citation:
Assignee:
Korea, Telecommun
International Classes:
H04L29/10; H04J11/00; H04L12/00; H04L27/26; H04L29/08; H04M3/00; H04M11/00; (IPC1-7): H04L29/10; H04L12/02; H04L12/28; H04L12/46; H04L12/66; H04L29/08; H04M3/00; H04M11/00
Attorney, Agent or Firm:
三枝 英二 （外８名）