Method and apparatus for reducing frame error rate

Details Method and apparatus for reducing frame error rate Method and apparatus for reducing frame error rate

H - Electricity

04

B

H04B 7/005 (2006.01) H04L 1/20 (2006.01)

Patent

CA 2380264

A method and apparatus for controlling a signal transmission power. The method of the present invention includes the steps of demodulating a received signal (401) to produce a demodulated signal (407) and distorting the demodulated signal (412) to produce a distorted demodulated signal (413). The demodulated signal (412) can be distorted by, for example, adding noise. A signal quality measurement, such as signal-to-noise ratio, is then determined (416, 418, 502, 602) based on the distorted demodulated signal rather than the demodulated signal. An adjustment in the transmission power is then requested (420, 506, 508) based on the signal quality measurement of the distorted demodulated signal.

L'invention concerne un procédé et un appareil destinés à commander une puissance d'émission de signal. Le procédé de la présente invention consiste à démoduler un signal reçu (401) pour produire un signal démodulé (407) et déformer le signal démodulé (412) de manière à produire un signal démodulé déformé (413). On peut déformer le signal démodulé (412), par exemple, en y ajoutant du bruit. On effectue ensuite une mesure (416, 418, 502, 602) de la qualité du signal, en mesurant, par exemple, le rapport signal / bruit, sur la base du signal démodulé déformé plutôt que du signal démodulé. Un ajustement de la puissance d'émission est ensuite nécessaire (420, 506, 508) sur la base de la mesure de la qualité du signal démodulé déformé.

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