Wireless communication apparatus having an acquisition circuit and the method thereof
OwnerYoshihito Shmazakiinventor
Life of this patent
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Abstract
A wireless communication apparatus having an acquisition circuit in CDMA system, wherein the acquisition circuit has a partial correlation portion which generates a first correlation value, a comparator portion which compares the first correlation value and a threshold value and outputs a comparison result and a clock signal control portion which supplies a clock signal to the partial correlation portion based on the comparison result.
Claims12
A wireless communication apparatus having an acquisition circuit in CDMA system, wherein the acquisition circuit has;
- a partial correlation portion which generates a first correlation value;
- a comparator portion which compares the first correlation value and a first threshold value and outputs a first comparison result;
- and
- a clock signal control portion which supplies a clock signal to the partial correlation portion based on the comparison result.
A wireless communication apparatus in CDMA system comprising;
- a plurality of correlation calculating circuits, wherein each correlation calculating circuit has a partial correlation portion which generates a first correlation value and a second correlation value during being supplied a clock signal and a clock signal control portion which supplies the clock signal to the partial correlation portion based on a first comparison result;
- a comparator portion which inputs a plurality of first correlation value output by each correlation calculating circuit, compares the plurality of first correlation value and generates the first comparison result.
A method of a wireless communication apparatus, the method comprising;
- receiving a transmitting signal which is output by a base station;
- modulating the transmitting signal to a base band signal;
- modulating the base band signal from an analog signal to a digital signal;
- comparing the digital signal and a spreading code and generating a first correlation value;
- comparing the first correlation value and a threshold value and generating a comparison result;
- supplying a clock signal based on the comparison result;
- and
- generating a second correlation value during being supplied the clock signal.
Dependencies are inferred from the claim text.