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US 8,300,740 B1Granted
Method and system for generating information for use in detecting a signal
AssigneeMarvell International Ltd.
InventorZhiyu Yang
Life of this patent
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Abstract
In a method for generating a signal quality indicator, a correlation signal is generated from a received signal and a spreading sequence. A magnitude signal is generated from the correlation signal. A time-domain averaged signal is generated based on the magnitude signal and at least a first time delayed version of the magnitude signal delayed by at least one symbol period. A peak-to-average signal is generated based on the time-domain averaged signal.
Claims30
A method of detecting a transmitted signal, the method comprising:
- generating a correlation signal from i) a received signal and ii) a spreading sequence;
- generating a magnitude signal from the correlation signal;
- generating a time-domain averaged signal based on i) the magnitude signal, and ii) at least a first time-delayed version of the magnitude signal delayed by at least one symbol period;
- generating a peak-to-average signal based on the time-domain averaged signal;
- wherein the generating the peak-to-average signal includes:
- generating a peak height signal based on the time-domain averaged signal,
- comparing the peak height signal to a peak height threshold, and
- setting the peak-to-average signal to a minimum value when the peak height signal does not exceed the peak height threshold;
- and
- processing the peak-to-average signal to determine whether the transmitted signal is detected in the received signal, including processing the peak-to-average signal after the peak-to-average signal has been set to the minimum value when the peak height signal does not exceed the peak height threshold.
7 more elements
A method of detecting a transmitted signal, the method comprising:
- generating a plurality of respective correlation signals from i) a plurality of received signals and ii) a spreading sequence, wherein the plurality of received signals correspond to a plurality of respective antennas;
- generating a plurality of respective magnitude signals from the plurality of correlation signals;
- generating a spatial-domain averaged signal based on the plurality of magnitude signals;
- generating a multiple antenna peak-to-average signal based on the spatial-domain averaged signal;
- wherein generating the multiple antenna peak-to-average signal includes:
- generating a peak height signal based on the spatial-domain averaged signal,
- comparing the peak height signal to a peak height threshold, and
- setting the multiple antenna peak-to-average signal to a minimum value when the peak height signal does not exceed the peak height threshold;
- and
- processing the multiple antenna peak-to-average signal to determine whether the transmitted signal is detected in the spatial-domain averaged signal, including processing the multiple antenna peak-to-average signal after the multiple antenna peak-to-average signal has been set to the minimum value when the peak height signal does not exceed the peak height threshold.
7 more elements
A system for detecting a transmitted signal, the system comprising:
- a correlator to correlate a received signal with a spreading sequence;
- a magnitude calculator to generate a magnitude signal based on an output of the correlator;
- a time-domain averaging unit to generate a time-domain averaged signal based on i) the magnitude signal, and ii) at least a first time-delayed version of the magnitude signal delayed by at least one symbol period;
- a peak-to-average signal generator to generate a peak-to-average signal based on the time-domain averaged signal,
- wherein the peak-to-average signal generator is configured to:
- generate a peak height signal based on the time-domain averaged signal,
- compare the peak height signal to a peak height threshold, and
- set the peak-to-average signal to a minimum peak-to-average value when the peak height signal does not exceed the peak height threshold;
- and
- a signal processor to process the peak-to-average signal to determine whether the transmitted signal is detected in the received signal, wherein the processor is configured to process the peak-to-average signal after the peak-to-average signal has been set to the minimum value when the peak height signal does not exceed the peak height threshold.
7 more elements
A system for detecting a transmitted signal, the system comprising:
- a plurality of correlators to correlate respective signals corresponding to a plurality of antennas with a spreading sequence;
- a plurality of magnitude calculators, each magnitude calculator coupled to a respective one of the plurality of correlators, to generate a plurality of magnitude signals based on outputs of the plurality of correlators;
- a spatial-domain averaging unit coupled to the plurality of magnitude calculators to generate a spatial-domain averaged signal based on outputs of the plurality of magnitude calculators;
- a multiple antenna peak-to-average signal generator to generate a multiple antenna peak-to-average signal based on the spatial-domain averaged signal;
- wherein the multiple antenna peak-to-average signal generator is configured to generate the multiple antenna peak-to-average at least by:
- generating a peak height signal based on the spatial-domain averaged signal,
- comparing the peak height signal to a peak height threshold, and
- setting the multiple antenna peak-to-average signal to a minimum value when the peak height signal does not exceed the peak height threshold;
- and
- a signal processor to process the multiple antenna peak-to-average signal to determine whether the transmitted signal is detected in the spatial domain averaged signal, wherein the processor is configured to process the multiple antenna peak-to-average signal after the multiple antenna peak-to-average signal has been set to the minimum value when the peak height signal does not exceed the peak height threshold.
7 more elements
Dependencies are inferred from the claim text.