Method of blindly estimating WCDMA OVSF code for signal analyzer
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United States of America Patent
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Aug 29, 2017
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Jan 26, 2017
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Feb 17, 2016
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Abstract
Provided is a method of blindly estimating WCDMA OVSF of a signal analyzer, which includes: (a) setting SF to 512 and an index thereof to 0; (b) calculating a power average value of a symbol obtained by despreading descrambled data with an OVSF code set by increasing the index from ‘0’ by ‘1’; (c) determining an OVSF code by which the power average value is equal to or greater than a power reference value as a used OVSF code candidate and determining an OVSF code by which the power average value is less than the power reference value as an unused OVSF code; (d) comparing a zero crossing rate of a symbol with a reference value to determine whether the OVSF code candidate is the used OVSF code; and (e) repeating (b) to (d) while reducing the SF half by half until the SF is equal to 4.
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