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Guard tone

Guard tone is a feature of wireline modems. The guard tone is sent by the answering modem after it has sent the answer tone. It is a single… 
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Papers overview

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2005
2005
Apparatus for wireless communications is provided. The apparatus includes a transmittable transmitter (200) orthogonal frequency… 
2005
2005
The present invention relates to an apparatus and method for controlling such that each different pilot-to-data tone power ratio…