Adaptive wireless communication receiver
First Claim
1. A power utilization control system for a wireless communications device, comprising:
- a signal properties evaluation module, said module operative to evaluate the stability of a received signal, said module configured to provide an indication of said stability;
an analog to digital converter having at least two modes of operation, said analog to digital converter responsive to said signal properties evaluation module to operate in at least one of two modes, based upon said stability, wherein said first mode comprises operation at a first precision and said second mode comprises operation at a second precision;
wherein said analog to digital converter is configured to respond to said signal properties evalaution module so as to limit the amount of power consumed by said wireless communications device; and
an analog to digital converter control module responsive to said signal properties evaluation module to select the precision of said analog to digital converter based upon said indication of said stability.
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Abstract
The present invention provides methods and apparatus for controlling power utilization in a wireless communication receiver. A representative system comprises a signal properties evaluation module, an analog to digital converter (ADC), and an analog to digital converter control module. The signal properties evaluation module evaluates the stability of a received signal, and provides an indication of the stability. The ADC control module responds to the signal properties evaluation module to select the precision of the ADC based upon the indication of the stability. The ADC has at least two modes of operation, comprising a first precision and a second precision, and is responsive to the signal properties evaluation module to operate in at least one of two modes based upon the stability. The ADC responds to the signal properties evaluation module so as to limit the amount of power consumed by the wireless communications device.
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Citations
15 Claims
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1. A power utilization control system for a wireless communications device, comprising:
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a signal properties evaluation module, said module operative to evaluate the stability of a received signal, said module configured to provide an indication of said stability;
an analog to digital converter having at least two modes of operation, said analog to digital converter responsive to said signal properties evaluation module to operate in at least one of two modes, based upon said stability, wherein said first mode comprises operation at a first precision and said second mode comprises operation at a second precision;
wherein said analog to digital converter is configured to respond to said signal properties evalaution module so as to limit the amount of power consumed by said wireless communications device; and
an analog to digital converter control module responsive to said signal properties evaluation module to select the precision of said analog to digital converter based upon said indication of said stability. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of reducing power consumption in a wireless communications receiver having an analog to digital converter comprising:
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receiving a signal;
monitoring the characteristics of the incoming signal;
evaluating the stability of the incoming signal; and
altering the precision of said analog to digital converter based on the evaluated stability of the incoming signal so as to limit the amount of power consumed by said wireless communications receiver. - View Dependent Claims (9, 10, 11, 12, 13)
evaluating the quality of said incoming signal; and
altering the precision of said analog to digital converter based on the evaluated quality of said incoming signal so as to limit the amount of power consumed by said wireless communications receiver.
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14. A power utlilization control system for a wireless communications device comprising:
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means for evaluating characteristics of a received signal for determining signal stability; and
means for actively reducing the precision of analog to digital converters in response to said received signal stability so as to limit the amount of power consumed by said wireless communications receiver. - View Dependent Claims (15)
means for evaluating characteristics of said received signal for determining signal quality; and
means for actively reducing the precision of said analog to digital converter in response to said received signal quality so as to limit the amount of power consumed by said wireless communications receiver.
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Specification