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US 2009/0257534 A1Published application
Frequency Offset Estimating Apparatus and Estimating Method Thereof
AssigneeMStar Semiconductor, Inc.
InventorShan Tsung Wu
Life of this patent
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Abstract
A frequency offset estimating apparatus includes an nth power computing module and a spectrum analyzing module. By raising a received signal to nth power to generate an nth power signal and analyzing the spectrum of the nth power signal, the present invention is capable of quickly and accurately estimating a frequency offset of the received signal. As being unaffected by channel characteristics, the estimating frequency offset apparatus is suitable for all channel environments.
Claims17
A frequency offset estimating method, for use in a receiver, comprising steps of:
- generating a nth power signal by raising a received signal to nth power;
- and
- analyzing a spectrum of the nth power signal to obtain a frequency offset.
A frequency offset estimating apparatus, comprising:
- an nth power computing module, for generating a nth power signal by raising a received signal to nth power;
- and
- a spectrum analyzing module, coupled to the nth power computing module, for analyzing a spectrum of the nth power signal to obtain a frequency offset.
Dependencies are inferred from the claim text.