Title:
HIGH-SPEED DATA TRANSMISSION RADIO LOCAL AREA NETWORK
Document Type and Number:
Japanese Patent JP3532556
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an equipment and its method for performing data communication between at least two data stations, which is well-suited to be used as radio local area network for highly reliable data communication via radio communication channel negatively affected by interference in multiple channels in especially high-speed data transmission.
SOLUTION: In the case of desirable embodiment, data is expressed as Walsh function wave form (66) coded by pseudo noise direct sequence spread spectrum modulation (70). The Walsh function coding prolongs duration time of symbols. Thereby, while a high speed data transmission is conducted with the spread spectrum modulation, it is possible to obtain a process gain enough to substantially solve the interference in multiple channels.
Inventors:
Cafarella, John H.
Fischer, Jeffrey H.
Fischer, Jeffrey H.
Application Number:
JP2002329562A
Publication Date:
May 31, 2004
Filing Date:
February 03, 1995
Export Citation:
Assignee:
PROXIM INC
International Classes:
H03M7/30; H04B1/707; H04B1/711; H04B14/04; H04J11/00; H04J13/00; H04J13/10; H04L1/00; H04L12/28; H04L27/18; H04L27/20; (IPC1-7): H04B1/707; H04L27/20
Attorney, Agent or Firm:
岡部 正夫 （外１０名）