Link quality determination of a transmission link in an OFDM...

Details Link quality determination of a transmission link in an OFDM... Link quality determination of a transmission link in an OFDM...

2007-03-06

2007-03-06

Kizou, Hassan (Department: 2616)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Quadrature carriers

C370S210000, C370S480000, C375S260000

Reexamination Certificate

active

09910732

ABSTRACT:
The present invention relates to a link quality determination unit (LQ-DET) for determining a link quality (LQ) of a transmission link (TL) between an OFDM transmitter (TR) and an OFDM receiver (RC) of an OFDM transmission system (SYS). A first link quality measure determination unit (Q1-DET) determines a first link quality measure (Q1) on the basis of a signal power variation or a signal-to-noise variation determined by a variation determination unit (VS-DET). A second link quality determination unit (Q2-DET) calculates a second link quality measure (Q2) on the basis of an average signal-to-noise ratio based on the noise power (Pz) and the signal power (Ps). To perform a link adaptation (LA) an overall link quality determination unit (Q-DET) combines the first and second link quality measures (Q1, Q2) into an overall link quality measure (Q).

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