Unique word and burst header detection for an expanded frequency range
AssigneeHughes Network Systems, LLC
InventorQiujun Huang
Life of this patent
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Abstract
Various data transmission detection systems are described. A receiver input through which a wireless data transmission signal is received may be present. A plurality of mixers in communication with the receiver input may be present, which may be digitally implemented. A data transmission detector may be present that receives a mixed wireless data transmission signal from each mixer and creates a plurality of scores. A match detection module may be present that receives the scores and identifies a highest score. The signal mapped to the highest score to be selected for further processing.
Claims20
A data transmission detection system, comprising:
- a first stage of the data transmission detection system, comprising:
- a receiver input through which a wireless data transmission signal is received;
- a plurality of mixers in communication with the receiver input, wherein:
- each mixer of the plurality of mixers mixes a different frequency of a plurality of frequencies with the wireless data transmission signal;
- and
- each mixer of the plurality of mixers outputs a mixed wireless data transmission signal, thereby creating a plurality of mixed wireless data transmission signals;
- a data transmission detector module that receives the mixed wireless data transmission signal from each mixer of the plurality of mixers and creates a plurality of scores, wherein:
- each score of the plurality of scores corresponds to a mixed wireless data transmission signal of the plurality of mixed wireless data transmission signals;
- and
- a match detection module configured to:
- receive the plurality of scores from the data transmission detector module, wherein the match detection module identifies a highest score of the plurality of scores and determines whether the highest score exceeds a match threshold;
- and
- cause the mixed wireless data transmission signal mapped to the highest score to be selected;
- and
- a second stage of the data transmission detection system, comprising:
- a second plurality of mixers that each receive the wireless data transmission signal, wherein:
- each mixer of the second plurality of mixers mixes a different localized frequency of a plurality of localized frequencies with the wireless data transmission signal;
- and
- each mixer of the plurality of mixers outputs a mixed localized wireless data transmission signal, thereby creating a plurality of mixed localized wireless data transmission signals.
A method for performing data transmission detection, the method comprising:
- receiving a wireless data signal that is Doppler-shifted,
- converting, using an analog to digital converter, the wireless data signal to a digital signal,
- as part of a first stage, mixing the digital signal with digital representations of a plurality of different frequencies separately to create a plurality of mixed digital signals;
- as part of the first stage, scoring each of the plurality of mixed digital signals for a presence of a unique word, thereby creating a plurality of scores;
- as part of the first stage, selecting a mixed digital signal of the plurality of mixed digital signals that has a highest score of the plurality of scores for the presence of the unique word;
- as part of a second stage, mixing the digital signal with digital representations of a plurality of localized frequencies separately to create a plurality of mixed localized digital signals;
- as part of the second stage, selecting a mixed localized digital signal of the plurality of mixed localized digital signals for output;
- and
- outputting the selected mixed localized digital signal.
Dependencies are inferred from the claim text.