Invention Grant
US08472540B2 Frequency and timing offset estimation algorithm for DTV (DVB-T2) receivers 有权
DTV(DVB-T2)接收机的频率和定时偏移估计算法

Frequency and timing offset estimation algorithm for DTV (DVB-T2) receivers
Abstract:
According to various embodiments, a method is disclosed that includes a method is disclosed that includes determining, by a receiver, a frequency offset in a signal comprising a set of orthogonal frequency division multiplexed (OFDM) symbols by determining a first difference in phase angles between a nth OFDM symbol and a nth+1 OFDM symbol on a common OFDM carrier and a first difference in phase angles between the nth+1 OFDM symbol and a nth+2 OFDM symbol on the common OFDM carrier and determining a second difference in phase angles between the first difference in phase angles between the nth OFDM symbol and the nth+1 OFDM system and the first difference in phase angles between the nth+1 OFDM symbol and the nth+2 OFDM symbol to identify the frequency offset, wherein nε{1, . . . , N}; and correcting, by the receiver, the signal using the determined frequency offset.
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