一種適用于OFDM-TDMA系統(tǒng)的載波頻率偏移估計(jì)算法
A Carrier Offset Estimation Algorithm for OFDM-TDMA System
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摘要: 該文提出了一種適用于OFDM-TDMA系統(tǒng)的載波頻率偏移盲估計(jì)算法,它利用OFDM載波信道間內(nèi)在的正交性,尋找與最小估計(jì)均方誤差相對(duì)應(yīng)的頻偏來(lái)校正系統(tǒng)的頻率偏移.通過(guò)計(jì)算機(jī)仿真表明,這種算法在頻率選擇性衰落信道下具有高的估計(jì)精度,且適用于時(shí)變環(huán)境下的頻偏跟蹤.
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關(guān)鍵詞:
- OFDM-TDMA;載波頻率偏移;均方誤差;誤比特率
Abstract: In this paper, a carrier offset estimation algorithm for OFDM-TDMA system is presented by taking advantage of the inherent orthogonality among OFDM subchannels. The simulation results illustrate that the algorithm offers a higher accuracy in the frequency-selected fading channel and fits the carrier traking in time-variant environments. -
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