Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-06-14
2005-06-14
Ha, Dac V. (Department: 2634)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S146000, C375S219000, C375S295000, C370S252000, C370S318000, C455S059000, C455S065000, C455S226200, C455S231000
Reexamination Certificate
active
06907061
ABSTRACT:
The present invention relates to a method for use in controlling the emission power of a transceiver which is in communication with another transceiver via a communication system, said method including the steps of measuring the amplitude or the power of the signal received by said transceiver and of evaluating a power control command which is then used to command the emission power of said transceiver according to said control command signal. According to the invention, the method includes the steps of evaluating the fast fading duration of the received signal on basis of said amplitude or power measurement and of deducing the power control command from said fast fading duration.
REFERENCES:
patent: 6178193 (2001-01-01), Kondo
patent: 6434130 (2002-08-01), Soininen et al.
patent: 6449463 (2002-09-01), Schiff
patent: 0884861 (1998-12-01), None
“Simulation of Average Fading Duration Using Deterministic Method”, Wang Xiao, et al, Electronics Letters Apr. 1, 1999, vol. 35, No. 7, pp. 542-544.
“A Power-Spectral Theory of Propagation in the Moblie-Radio Environment”, M. Gans, IEEE Transactions on Vehicular Technology, vol. VT-21, No. 1, Feb. 1972 p. 27-38.
Ha Dac V.
Mitsubishi Denki & Kabushiki Kaisha
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