一種新的OFDM系統(tǒng)載波頻率捕獲算法
A New Carrier Frequency Acquisition Algorithm for OFDM Systems
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摘要: 該文從OFDM信號(hào)的特性出發(fā)，采用單一訓(xùn)練幀，將OFDM系統(tǒng)的載波頻率捕獲等效為單載波頻差估計(jì)。該文提出的算法僅使用一幀輔助數(shù)據(jù)；具有較高的精度，較少的計(jì)算量和較大的捕獲范圍；且不受多徑信道，時(shí)偏及幀同步誤差的影響。
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關(guān)鍵詞:
- 正交頻分復(fù)用;多載波;載波同步;捕獲
Abstract: Based on the property of OFDM signal, a new carrier frequency acquisition algorithm is proposed, which employs only one block of identical time-domain training sym-bols. The proposed algorithm has good precision, low computations and large acquisition range. It is intrinsically robust to multipath channel and timing error. -
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