Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Reexamination Certificate
2001-02-12
2008-11-25
Chan, Wing F. (Department: 2619)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
C370S480000, C370S493000
Reexamination Certificate
active
07457324
ABSTRACT:
A multi-carrier CDMA radio transmitting method replicates each information symbol and disposes thus-obtained information symbols along a frequency axis, multiplies the thus-obtained information symbols with a spreading code along the frequency axis, spreads the information symbols into components of a plurality of sub-carriers having different frequencies. The transmission rate of the information is changed by controlling the amount of information transmitted simultaneously by controlling the number of the information symbols to be used for spreading for the plurality of sub-carrier components for each user to which the information is to be transmitted.
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Abeta Sadayuki
Atarashi Hiroyuki
Sawahashi Mamoru
Chan Wing F.
Mais Mark A.
NTT DoCoMo Inc.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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