移动通信
移動通信
이동통신
MOBILE COMMUNICATIONS
2013年
12期
82-86
,共5页
OFDM调制%循环前缀%交织%符号定时同步
OFDM調製%循環前綴%交織%符號定時同步
OFDM조제%순배전철%교직%부호정시동보
OFDM%cyclic prefix%interleaving%symbol timing synchronization
针对OFDM系统符号同步存在偏差对相关峰值的影响,提出采用交织的方法设计训练序列,从而获得强相关峰值。与传统的基于训练序列同步算法相比,需要产生交织表,算法计算复杂度略有增加,但理论分析与实验仿真表明,本算法的准确度和精度更高。
針對OFDM繫統符號同步存在偏差對相關峰值的影響,提齣採用交織的方法設計訓練序列,從而穫得彊相關峰值。與傳統的基于訓練序列同步算法相比,需要產生交織錶,算法計算複雜度略有增加,但理論分析與實驗倣真錶明,本算法的準確度和精度更高。
침대OFDM계통부호동보존재편차대상관봉치적영향,제출채용교직적방법설계훈련서렬,종이획득강상관봉치。여전통적기우훈련서렬동보산법상비,수요산생교직표,산법계산복잡도략유증가,단이론분석여실험방진표명,본산법적준학도화정도경고。
Considering the effect of the offset of symbol synchronization in OFDM system on correlation peak, interleaved preamble is proposed to get high correlation peak. Compared with traditional synchronization algorithms based on training sequences, though the proposed algorithm with interleave table has slightly increased computation complexity, both theoretical analysis and simulation results show that the proposed algorithm has higher accuracy.