Multiplex communications – Communication techniques for information carried in plural... – Transmission bandwidth conservation
Reexamination Certificate
2002-12-11
2008-09-23
Pezzlo, John (Department: 2619)
Multiplex communications
Communication techniques for information carried in plural...
Transmission bandwidth conservation
C370S252000, C370S328000, C375S220000, C375S130000
Reexamination Certificate
active
07428248
ABSTRACT:
A object of the present invention is to decrease or avoid the distortion of an MC-CDMA signal transmitted over a reverse link channel for a given amplifier efficiency.The present invention concerns a code allocation method for a mobile telecommunication system. According to the invention, for each of a plurality of available spreading codes or available combinations of spreading codes a value of a first variable (PAPRk) characteristic of the dynamic range of a modulated signal (Sk) is determined, and for each of a plurality of users a value of a second variable (αk) characteristic of the propagation loss incurred over the transmission channel of the user is determined. A spreading code or combination of spreading codes producing a low dynamic range is allocated to said user if the propagation loss over its transmission channel is high.
REFERENCES:
patent: 2003/0103445 (2003-06-01), Steer et al.
patent: 2003/0169722 (2003-09-01), Petrus et al.
Mitsubishi Denki & Kabushiki Kaisha
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Pezzlo John
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