Methods and apparatus for use in generating spreading sequences for multiple modes of communication
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United States of America Patent
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Apr 15, 2003
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Oct 19, 2000
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May 28, 1999
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Abstract
In one example described, a data sequence generator for use in spread spectrum communications includes one or more read-only memories (ROMs) which have first and second spreading sequences stored therein. The first spreading sequence is associated with a first mode of communication, whereas the second spreading sequence is associated with a second mode of communication. The one or more ROMs have inputs to receive counter values and outputs for serially providing, responsive to the counter values, sequence data from either the first spreading sequence or the second spreading sequence depending on which mode of communication is selected. The first and the second spreading sequences may be unique to, for example, IS-95 and IS-2000 standards, respectively.
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