Detection of interferers using divergence of signal quality estimates
First Claim
1. A method for detecting an interferer in a wireless communication system, the method comprising:
- receiving a signal having a plurality of pilot (P) tones, each of the P tones being associated with a frequency;
determining a respective first signal quality for each of the P tones;
determining a respective second signal quality for each of the P tones; and
detecting the interferer that occupies the same frequency associated with one of the P tones based on the respective first signal quality and the respective second signal quality;
wherein the first signal quality and second signal quality behave differently when the interferer is present, and wherein the detecting the interferer includes determining a discrepancy in the behavior of the first signal quality and the second signal quality.
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Accused Products
Abstract
A method, system, and computer-readable medium for detecting an interferer in a wireless communication system are provided. The method includes receiving a signal having P tones, each of the P tones being associated with a frequency, determining a first signal quality of each of the P tones, determining a second signal quality of each of the P tones, and detecting the interferer that occupies the same frequency as one of the P tones based on the respective first signal quality and the respective second signal quality. The first signal quality and second signal quality behave differently when the interferer is present. The detecting the interferer includes determining a discrepancy in the behavior of the first signal quality and the second signal quality.
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Citations
20 Claims
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1. A method for detecting an interferer in a wireless communication system, the method comprising:
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receiving a signal having a plurality of pilot (P) tones, each of the P tones being associated with a frequency; determining a respective first signal quality for each of the P tones; determining a respective second signal quality for each of the P tones; and detecting the interferer that occupies the same frequency associated with one of the P tones based on the respective first signal quality and the respective second signal quality; wherein the first signal quality and second signal quality behave differently when the interferer is present, and wherein the detecting the interferer includes determining a discrepancy in the behavior of the first signal quality and the second signal quality. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A non-transitory computer-readable medium having computer-executable instructions for execution by a processing system, the computer-executable instructions for detecting an interferer in a wireless communication system, comprising:
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instructions that receive a signal having a plurality of pilot (P) tones, each of the P tones being associated with a frequency; instructions that determine a respective first signal quality for each of the P tones; instructions that determine a respective second signal quality for each of the P tones; and instructions that detect the interferer that occupies the same frequency associated with one of the P tones based on the respective first signal quality and the respective second signal quality; wherein the first signal quality and second signal quality behave differently when the interferer is present, and wherein the instructions that detect the interferer includes instructions that determine a discrepancy in the behavior of the first signal quality and the second signal quality. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A system for detecting an interferer in an ultra wideband (UWB) system, comprising:
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an antenna adapted to receive an OFDM signal having a plurality of pilot (P) tones, each of the N tones being associated with a frequency; a Fast Fourier Transform (FTT) module adapted to translate the received signal into a frequency domain; a demodulator for demodulating the translated signal, the demodulator providing a respective first signal quality of each of the P tones and a respective second signal quality of each of the P tones; and a detection module configured to detect the interferer that occupies the same frequency associated with one of the P tones if a corresponding normalization value exceeds a threshold, the respective normalization value of each of the P tones being a function of the respective first signal quality and respective second signal quality. - View Dependent Claims (17, 18, 19, 20)
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Specification