Method of robust timing detection and carrier frequency offset estimation for OFDM systems
AssigneeSamsung Electronics Co., Ltd.
InventorsHuaning Niu, Chiu Ngo
Life of this patent
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Abstract
A symbol detector for an OFDM receiver determines the correlation of corresponding samples of at least two received preamble symbol samples, one of the samples delayed a predetermined duration with respect to the other; determines a timing metric based on the correlation results; detects multiple peaks in the timing metric; indicates a symbol detection based on the multiple peaks detected in the timing metric; and gets a refined CFO estimation using averaging the phase information across these multiple peaks.
Claims24
A symbol detection method for an OFDM receiver, comprising the steps of:
- determining the correlation of corresponding samples of at least two received preamble symbol samples, one of the samples delayed a predetermined duration with respect to the other;
- determining a timing metric based on the correlation results;
- detecting multiple peaks in the timing metric;
- and
- indicating a symbol detection based on the multiple peaks detected in the timing metric.
A symbol detection system for an OFDM receiver, comprising:
- a correlator that determines the correlation of corresponding samples of at least two received preamble symbol samples, one the samples delayed a predetermined duration with respect to the other, and determines a timing metric based on the correlation results;
- and
- a detector that detects multiple peaks in the timing metric, and indicates a symbol detection based on the multiple peaks detected in the timing metric.
Dependencies are inferred from the claim text.