Title:
SYSTEM AND METHOD FOR SPREAD SPECTRUM COMMUNICATION
Document Type and Number:
Japanese Patent JP3632412
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a spread spectrum communication system, where the effect of amplitude fluctuation is suppressed with a simple circuit configuration with superior general purpose performance while keeping multiplexing and high transmission information speed.
SOLUTION: A transmitter 2 in the spread spectrum communication system converts first coding data &phiv 3 into 2nd coding data &phiv 4 and data representing reference value and its multiple and outputs second coding data &phiv 4, and reference data &phiv 5 denoting the reference value as communication data at a different time at the same chip rate. Since the first coding data &phiv 3 are represented by the second cooling data &phiv 4 being a reference value and its ratio, both the reference value and the second coding data &phiv 4 receive nearly similar effects of amplitude fluctuation and the effect of the amplitude fluctuation is cancelled by dividing them.
Inventors:
Masao Nakagawa
Norio Hama
Norio Hama
Application Number:
JP34976097A
Publication Date:
March 23, 2005
Filing Date:
December 18, 1997
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
H04J13/00; H04B1/7097; H04B7/24; H04W72/04; (IPC1-7): H04J13/00; H04B7/24
Domestic Patent References:
| JP9008770A | ||||
| JP8251135A | ||||
| JP60145713A | ||||
| JP7321766A | ||||
| JP8274752A |
Attorney, Agent or Firm:
Masahiko Ueyanagi
Osamu Suzawa
Osamu Suzawa