Title:
RECEIVER FOR SPREAD SPECTRUM COMMUNICATION
Document Type and Number:
Japanese Patent JP3208650
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To eliminate an interference signal with respect to a reception signal from a radio station having a lowest information transmission speed since the output signal of an inverse spread circuit corresponding to a time by one symbol at a lowest information transmission speed is inputted by an interference elimination circuit.
SOLUTION: A transmission signal from a radio station is inputted to an antenna 2-1, its output is inputted to a receiver 2-2, it is subjected to an inverse spread by each spread code corresponding to radio stations of (Na1 + Na2)-sets, output of Na1-sets of inverse spread circuits 2-3 are connected to a delay circuit TC 2-5. Furthermore, the signal is delayed by a time difference between a preceding wave and a delay wave generated in a radio block, and output of Na2-sets of inverse spread circuits 2-4 are connected to a delay circuit TS 2-6. The signal is delayed by one information symbol of an information transmission speed a2 and outputs of Na2-sets of the delay circuits TS 2-6 and Na2-sets of the inverse spread circuits TS 2-4 are connected to the delay circuit TC. Furthermore, the signal is delayed by a time difference of a preceding wave and a delay wave generated in the radio block to eliminate and interference signal.
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Inventors:
Eisuke Kudo
Shigeaki Ogoshi
Shigeaki Ogoshi
Application Number:
JP4963096A
Publication Date:
September 17, 2001
Filing Date:
February 14, 1996
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04J13/00; H04B1/7107; (IPC1-7): H04J13/04
Domestic Patent References:
| JP6343067A |
Attorney, Agent or Firm:
Keiichi Yamamoto