Multiplex communications – Generalized orthogonal or special mathematical techniques
Patent
1997-09-03
2000-09-26
Kizou, Hassan
Multiplex communications
Generalized orthogonal or special mathematical techniques
370480, 375222, 375261, H04J 100, H04L 2302
Patent
active
061251038
ABSTRACT:
The major problem in multicarrier transmission procedures consists in the very high crest factor of the transmit signal. This means, that very high signal peak values occur even with a moderate transmission power. It is the object of the invention to provide a method and device, whereby a definite reduction of signal peaks is achieved with moderate expenditure. This is obtained by generating, in addition to the information to be transmitted, several alternative, information-equivalent information sequences by means of determined reversible unambiguous representations. From these alternatives a sequence being favorable in view of the peak value of the pertinent transmit signal is selected and transmitted. The receiver is in a position to regenerate the original information from said receiving signal through the inversion of the performed representation.
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Bauml Robert
Fischer Robert
Huber Johannes
Muller Stefan
Kizou Hassan
Pezzlo John
Telefonaktiebolaget LM Ericsson
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