Receiver architecture for SDARS full band signal reception having an analog conversion to baseband stage
First Claim
1. A receiver architecture comprising:
- first means for receiving a signal having at least first and second carrier frequencies on which first and second information signals are modulated, respectively, said first means including means for simultaneously receiving first and second ensembles, said first ensemble including a first signal from a first source, a first signal from a second source and a first signal from a third source and said second ensemble including a second signal from said first source, a second signal from said second source and a second signal from said third source;
second means for converting said received signal to a complex baseband signal; and
third means for outputting said complex baseband signal.
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Abstract
A receiver adapted to receive a signal having at least first and second carrier frequencies on which first and second information signals are modulated, respectively. The inventive receiver further includes circuitry for converting the received signal to a complex baseband signal. In the illustrative embodiment, the received signal includes first and second ensembles. The first ensemble includes a first signal from a first source, a first signal from a second source and a first signal from a third source. The second ensemble includes a second signal from the first source, a second signal from the second source and a second signal from the third source. The receiver is adapted to selectively output the first and/or the second ensemble. Conversion of the band is achieved with quad mixers. The outputs of the mixers are digitized and selectively provided as the first and/or the second ensemble by a digital translation stage.
28 Citations
24 Claims
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1. A receiver architecture comprising:
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first means for receiving a signal having at least first and second carrier frequencies on which first and second information signals are modulated, respectively, said first means including means for simultaneously receiving first and second ensembles, said first ensemble including a first signal from a first source, a first signal from a second source and a first signal from a third source and said second ensemble including a second signal from said first source, a second signal from said second source and a second signal from said third source;
second means for converting said received signal to a complex baseband signal; and
third means for outputting said complex baseband signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A satellite radio receiver architecture comprising:
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first means for simultaneously receiving first and second ensembles, said first ensemble including a first signal from a first source, a first signal from a second source and a first signal from a third source and said second ensemble including a second signal from said first source, a second signal from said second source and a second signal from said third source, said first means including;
means for receiving a signal having at least first and second carrier frequencies on which first and second information signals are modulated, respectively and means for filtering said received signal;
second means for converting said received signal to a complex baseband signal, said second means including a quad mixer connected to the output of said means for filtering for providing first and second complex baseband outputs; and
third means for outputting said complex baseband signal, said third means including means for digitizing said complex baseband outputs; and
fourth means for selectively outputting said first and/or said second ensembles. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A method for receiving a satellite radio signal comprising the steps of:
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receiving a signal having at least first and second carrier frequencies on which first and second information signals are modulated, respectively, said step of receiving further including the step of simultaneously receiving first and second ensembles, said first ensemble including a first signal from a first source, a first signal from a second source and a first signal from a third source and said second ensemble including a second signal from said first source, a second signal from said second source and a second signal from said third source;
converting said received signal to a complex baseband signal; and
outputting said complex baseband signal.
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Specification