Code allocation method in an MC-CDMA telecommunication system

Multiplex communications – Communication techniques for information carried in plural... – Transmission bandwidth conservation

Reexamination Certificate

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C370S252000, C370S328000, C375S220000, C375S130000

Reexamination Certificate

active

10316069

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.

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