CORRECTION OF A SAMPLING FREQUENCY OFFSET IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM BY SIDELOBE ANALYSIS OF PILOT SUBCARRIERS

Title:

CORRECTION OF A SAMPLING FREQUENCY OFFSET IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM BY SIDELOBE ANALYSIS OF PILOT SUBCARRIERS

Document Type and Number:

WIPO Patent Application WO2001047204

Kind Code:

A8

Abstract:

An OFDM (orthogonal frequency division multiplexing) receiver (6 0) that detects and corrects a sampling frequency offset of a sampled signal. The OFDM receiver samples an incoming signal in the time domain, multiplies the sampled data by a window function (124) to widen the main lobe of each of the predetermined subcarriers' frequency domain spectrum, takes an FFT (fast Fourier transform) (126) of the sampled signal to analyze the frequency domain samples of each predetermined subcarrier, detects a difference in magnitude (128) of the frequency domain samples for each predetermined subcarrier, and generates a sampling frequency error (128, 132, 134) based on the detected difference in magnitude.

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Inventors:

BELOTSERKOVSKY MAXIM B (US)
LITWIN LOUIS ROBERT JR (US)

Application Number:

PCT/US2000/034620

Publication Date:

October 11, 2001

Filing Date:

December 20, 2000

Export Citation:

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Assignee:

THOMSON LICENSING SA (FR)
BELOTSERKOVSKY MAXIM B (US)
LITWIN LOUIS ROBERT JR (US)

International Classes:

H04J11/00; H04L7/00; H04L27/26; (IPC1-7): H04L27/26

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