计算机工程与设计
計算機工程與設計
계산궤공정여설계
Computer Engineering and Design
2015年
10期
2645-2649
,共5页
IEEE 802.11ac%帧同步%虚警概率%漏检概率%符号间干扰%信噪比
IEEE 802.11ac%幀同步%虛警概率%漏檢概率%符號間榦擾%信譟比
IEEE 802.11ac%정동보%허경개솔%루검개솔%부호간간우%신조비
IEEE 802.11ac%frame synchronization%false alarm probability%missed detection probability%inter-symbol-inter-ference%signal-to-noise ratio
由于采用了OFDM技术, IEEE 802.11ac系统对同步误差极其敏感,为获得较好的帧同步性能,提出一种帧同步算法。通过采用统计分析的方法获得该算法中延时自相关函数实部的统计特征,推导虚警概率与漏检概率的理论公式及最佳的理论门限。仿真结果表明,与传统算法相比,该算法具有更低的虚警概率与漏检概率,具有更好的帧同步性能。
由于採用瞭OFDM技術, IEEE 802.11ac繫統對同步誤差極其敏感,為穫得較好的幀同步性能,提齣一種幀同步算法。通過採用統計分析的方法穫得該算法中延時自相關函數實部的統計特徵,推導虛警概率與漏檢概率的理論公式及最佳的理論門限。倣真結果錶明,與傳統算法相比,該算法具有更低的虛警概率與漏檢概率,具有更好的幀同步性能。
유우채용료OFDM기술, IEEE 802.11ac계통대동보오차겁기민감,위획득교호적정동보성능,제출일충정동보산법。통과채용통계분석적방법획득해산법중연시자상관함수실부적통계특정,추도허경개솔여루검개솔적이론공식급최가적이론문한。방진결과표명,여전통산법상비,해산법구유경저적허경개솔여루검개솔,구유경호적정동보성능。
IEEE 802.11ac system is sensitive to synchronization error since it adopts OFDM technology ,to obtain better per‐formance of frame synchronization ,a frame synchronization algorithm was proposed .According to the analysis of the real compo‐nent of the delay autocorrelation function ,the theoretical formula of both the false alarm probability and the missed detection probability were derived .Simulation results show that ,compared with traditional algorithms ,the proposed algorithm has lower false alarm probability and lower missed detection probability ,which better performs in terms of frame synchronization .