MOBILE DATA COMMUNICATION METHOD AND ITS DEVICE

Title:

MOBILE DATA COMMUNICATION METHOD AND ITS DEVICE

Document Type and Number:

Japanese Patent JP3875369

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To transmit data at a high speed in terms of transmission spectrums by assigning a plurality of symbols generated by coding a series of data to a plurality of carrier sound signals and transmitting simultaneously subsets of the carrier sound signals from a plurality of transmission antennas.
SOLUTION: A modulator 301 receives a series of data bits to generate a modulator symbol A and a symbol discrimination device 302 discriminates the symbol A in time series to provide an output of a modulation signal B. A data series outputted by using an R-S encoder 303 and a decomposing device 304 to apply sequentially coding and decomposing the signal B is given to an S/P converter 305, where the signal B is S/P-converted and 120-sets of XO-X119 are outputted. A distribution device 306 supplies M-sets of symbol clusters to transmission antennas 3091-309M via IFFTs 3071-307M. In this embodiment, M=4 is set and 5 symbol groups corresponding to 5 carrier sound signals, that is, 30 symbols in 120 symbols are fed to each transmission antenna. Thus, the device is accessible to the user in the mobile equipment through a radio channel at a high speed.

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Inventors:

Leonard Joseph Simini, Junya
Nelson Ray Solenberger

Application Number:

JP25741797A

Publication Date:

January 31, 2007

Filing Date:

September 24, 1997

Export Citation:

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Assignee:

AT&T CORP.

International Classes:

H04J11/00; H04B7/06; H04B7/26; H04L1/00; H04L1/06; H04L1/08; H04L27/26; H04B7/08; (IPC1-7): H04J11/00; H04B7/26

Domestic Patent References:

JP7283802A
JP6334573A
JP6334545A
JP7183862A

Other References:

Hideyuki Takahashi and Masao Nakagawa,Antenna and Multi-Carrier Combined Diversity System,IEICE TRANS. COMMUN.,日本,1996年 9月,Vol. E79-B, No.9,p.1221-1226

Attorney, Agent or Firm:

Masao Okabe
Nobuaki Kato
Asahi Shinmitsu
Koji Yoshizawa

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