Methods and systems for detecting a narrow-band interferer
First Claim
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1. A method of detecting a narrow-band interference comprising:
- calculating a differential phase metric by;
receiving a first OFDM signal at a pilot tone;
receiving a second OFDM signal sent in the same frequency band; and
determining a differential phase metric between the first OFDM signal and the second OFDM signal;
comparing the differential phase metric to a predetermined threshold; and
determining a likelihood that a narrowband interferer is present based on the comparison.
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Abstract
Various embodiments of the systems and methods described herein may be used to compute a minimum variance unbiased estimator by receiving a first OFDM signal at a pilot tone, receiving a second OFDM signal sent in the same frequency band and determining a differential phase metric between the first OFDM signal and the second OFDM signal. In some embodiments, the differential phase metric may be used to diversity combine synchronization statistics. In various embodiments, the differential phase metric may be used to detect a narrow-band interference.
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Citations
20 Claims
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1. A method of detecting a narrow-band interference comprising:
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calculating a differential phase metric by; receiving a first OFDM signal at a pilot tone; receiving a second OFDM signal sent in the same frequency band; and determining a differential phase metric between the first OFDM signal and the second OFDM signal; comparing the differential phase metric to a predetermined threshold; and determining a likelihood that a narrowband interferer is present based on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for of detecting a narrow-band interference comprising:
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an antenna; a processor, coupled to the antenna; and a memory, coupled to the processor and configured to store instructions causing the processor to; calculate a differential phase metric by; receiving a first OFDM signal at a pilot tone; receiving a second OFDM signal sent in the same frequency band; and determining a differential phase metric between the first OFDM signal and the second OFDM signal; compare the differential phase metric to a predetermined threshold; and determine a likelihood that a narrowband interferer is present based on the comparison. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification