IF PROCESS ENGINE AND RECEIVER HAVING THE SAME AND METHOD FOR REMOVING IF CARRIERS USED THEREIN
First Claim
1. An intermediate frequency (IF) process engine for a GNSS receiver, comprising:
- a local oscillator part for generating a plurality of carriers with different frequencies;
an IF down-converter for respectively mixing IF signals with the carriers generated by the local oscillator part to generate IF removed signal segments;
a time division multiplex (TDM) controller for scheduling the respective mixing operations of the IF down-converter; and
a buffer for storing the IF removed signal segments generated by the IF down-converter.
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Accused Products
Abstract
A GNSS receiver having an IF process engine is disclosed. The IF process engine provides a plurality of carriers with different frequencies and down converts IF signals into baseband signals by using the carriers in a time division multiplex (TDM) schedule. The IF process engine has a local oscillator part for generating the carriers with different frequencies; an IF down-converter for respectively mixing the IF signal with the carriers generated by the local oscillator part to generate IF removed signal segments; a time division multiplex (TDM) controller for scheduling the respective mixing operations of the IF down-converter for the IF signal with the respective carriers; and a buffer for storing the IF removed signal segments generated by the IF down-converter.
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Citations
23 Claims
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1. An intermediate frequency (IF) process engine for a GNSS receiver, comprising:
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a local oscillator part for generating a plurality of carriers with different frequencies; an IF down-converter for respectively mixing IF signals with the carriers generated by the local oscillator part to generate IF removed signal segments; a time division multiplex (TDM) controller for scheduling the respective mixing operations of the IF down-converter; and a buffer for storing the IF removed signal segments generated by the IF down-converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A GNSS receiver comprising:
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an RF front end for down converting the RF signals into intermediate frequency (IF) signals; an IF process engine for providing a plurality of carriers with different frequencies and down converting the IF signals into baseband signals by using the carriers in a time division multiplex (TDM) schedule; and a correlator engine for correlating the baseband signals with codes to generate correlation results. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for removing intermediate frequency (IF) carriers with different frequencies from IF signals in a GNSS receiver, the method comprising steps of:
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generating a plurality of carriers with different frequencies; mixing the respective carriers with IF signals to generate IF removed signal segments base on a TDM schedule; and storing the IF removed signal segments.
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Specification