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《Chinese Journal of Radio Science》 2004-02
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Pilot-assisted carrier frequency-offset estimation in smart antenna

LI Jun LIAO Gui-sheng GUO Qing-hua FENG Man (Key Lab. for Radar Signal Processing,Xidian Univ.,Xi′an Shanxi 710071,China)  
Smart antenna is thought to play an important role in future wireless communication. However,the performance of such communication system strictly depends on accurate estimates of the synchronization parameters, such as carrier frequency-offset (CFO). In this paper,the contributions of the numbers of both the array elements and pilot symbols for pilot-assisted CFO estimation was analyzed quantitatively,a new algorithm for pilot-assisted CFO estimation in presence of co-channel interference (CCI) with the help of adaptive array weighted structure was also presented. However,neither adaptive weight nor array manifold was needed in the final algorithm. Furthermore,computer simulations show that the proposed algorithm can fully exploit the gains from elements and pilots and reject the effect of CCI effectively.
【Fund】: 国家自然科学基金 (No .6 0 172 0 2 8) ;; 高等学校博士学科点专项科研基金 (No .2 0 0 10 70 10 0 8)资助
【CateGory Index】: TN821
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