System and method for measuring signal to noise values in an adaptive wireless communication system
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United States of America Patent
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Aug 18, 2009
Grant Date -
Sep 4, 2003
app pub date -
Jul 26, 2002
filing date -
Jul 27, 2001
priority date (Note) -
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Abstract
The system and method optimizes a SNR calculation for a signal received during a downlink burst even in the absence of a node's preferred modulation. This system and method are used in communication systems that include a multi-modulation modem. An adaptation factor is selected whereby its use during portions of the downlink burst, which were not modulated using the preferred modulation, provides the SNR. The selected adaptation factor is used by an equalizer to perform channel inversion to the signal. The system and method can be used in, for example, an FDD or TDD communication system. Such communication systems can be, for example, symmetric, asymmetric, and/or adaptive in their operation.
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