時分?jǐn)?shù)據(jù)調(diào)制偏移載波信號的多參數(shù)盲估計

周楊; 張?zhí)祢U; 錢文瑞

doi:10.11999/JEIT171201

時分?jǐn)?shù)據(jù)調(diào)制偏移載波信號的多參數(shù)盲估計

doi: 10.11999/JEIT171201

周楊^{*張?zhí)祢U錢文瑞},
張?zhí)祢U,
錢文瑞

基金項目:

國家自然科學(xué)基金(61371164, 61275099, 61102131)，信號與信息處理重慶市市級重點實驗室建設(shè)項目(CSTC2009 CA2003)，重慶市杰出青年基金(CSTC2011jjjq40002)

計量
- 文章訪問數(shù): 1366
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- 被引次數(shù): 0
出版歷程
- 收稿日期: 2017-12-19
- 修回日期: 2018-03-26
- 刊出日期: 2018-08-19

Blind Parameters Estimation of TDDM-BOC Modulation Signal

ZHOU Yang^{*張?zhí)祢U錢文瑞},
ZHANG Tianqi,
QIAN Wenrui

Funds:

The National Natural Science Foundation of China (61371164, 61275099, 61102131), The Project of Key Laboratory of Signal and Information Processing of Chongqing (CSTC2009CA2003), The Chongqing Distinguished Youth Foundation (CSTC2011jjjq40002)

摘要

摘要: 針對時分?jǐn)?shù)據(jù)調(diào)制二進(jìn)制偏移載波(TDDM-BOC)信號副載波速率、偽碼速率以及載頻等參數(shù)盲估計問題，該文提出一種基于頻域累積的循環(huán)自相關(guān)算法。首先在接收端對TDDM-BOC信號求循環(huán)自相關(guān)函數(shù)，再在頻域累積，通過檢測不同切片上的譜峰間隔，可以同時估計以上多個參數(shù)。仿真實驗證明了改進(jìn)型的循環(huán)自相關(guān)算法能在低信噪比下達(dá)到較為精確的估計性能，這為我國北斗導(dǎo)航接收機(jī)的研發(fā)提供了一定的理論參考。
- 時分?jǐn)?shù)據(jù)調(diào)制二進(jìn)制偏移載波(TDDM-BOC)信號 /
- 循環(huán)自相關(guān) /
- 副載波速率 /
- 北斗導(dǎo)航系統(tǒng)
Abstract: A cyclic autocorrelation algorithm of Time Division Data Modulation Binary Offset Carrier (TDDM- BOC) signal, based on frequency domain accumulation, is proposed to estimate the signal parameters: subcarrier rate, Pseudo Noise (PN) code rate and carrier in multipath fading channel. Firstly, the cyclic autocorrelation of received TDDM-BOC signal is computed, then frequency domain accumulation is used to reduce the influence of noise. Finally, through interval measurement between the peak pulses in different slices, parameters mentioned above can be estimated. Simulation results show that the proposed algorithm is effective and works well under the condition of low Signal-to-Noise Ratio (SNR), which has a certain reference value for Bei-dou navigation receiver design.
- Time Division Data Modulation Binary Offset Carrier (TDDM-BOC) signal /
- Cyclic autocorrelation function /
- Subcarrier rate /
- Bei-dou satellite navigation system

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參考文獻(xiàn)(15)

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