BLIND CARRIER TRACKING LOOP
First Claim
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1. Apparatus for use in a carrier tracking loop, the apparatus comprising:
- a phase lock loop for performing tracking of a carrier in a received signal;
wherein the phase lock loop comprisesa detector for using energy from both band edges of the received signal for driving the phase lock loop.
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Abstract
A receiver is an ATSC (Advanced Television Systems Committee)-receiver and comprises a phase lock loop (PLL) for performing carrier tracking of a carrier in a received signal. The PLL includes a detector (160) comprising two pseudo-Hilbert filters (205, 215). The detector uses energy from both band edges of the received ATSC signal for driving the PLL.
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Citations
15 Claims
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1. Apparatus for use in a carrier tracking loop, the apparatus comprising:
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a phase lock loop for performing tracking of a carrier in a received signal; wherein the phase lock loop comprises a detector for using energy from both band edges of the received signal for driving the phase lock loop. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for use in carrier tracking, the method comprising:
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performing tracking of a carrier in a received signal with a phase lock loop; and driving the phase lock loop as a function of detected energy from both band edges of the received signal for - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification