电子器件2017，Vol.40Issue(5)：1167-1172,6.DOI:10.3969/j.issn.1005-9490.2017.05.023
WCDMA下行信道的时隙同步及频偏补偿算法研究
WCDMA Downlink Slot Synchronization and Frequency Offset Compensation Algorithm Research
摘要
Abstract
As a mature mobile communication technology, WCDMA derived a variety of similar communication systems. In order to improve the performance of time slot synchronization under the environment of low signal-to-noise ratio and large deviation,the limitations of the application of the methods is analyzed based on piece-wise non-coherent accumulation. An enhanced algorithm slot synchronization algorithm is applied based on frequency compensation com-bined with slot synchronization,simulation shows that this algorithm can effectively improve the slot synchronization performance of the system,and put forward a scheme based on variable compensation frequency step size combined with variable length of coherent accumulation slot,which can make fast convergence to 6 Hz frequency offset range. Under the low signal-to-noise ratio,it succeeds to deal with the process of cell search of the actual air interface data.关键词
WCDMA/小区搜索/频偏补偿/时隙同步/匹配滤波Key words
WCDMA/cell searching/frequency offset compensation/slot synchronization/matched filtering分类
信息技术与安全科学引用本文复制引用
余景盼,万国金,冷若兰,虞贵财..WCDMA下行信道的时隙同步及频偏补偿算法研究[J].电子器件,2017,40(5):1167-1172,6.基金项目
国家自然科学基金项目( 61661030) （ 61661030）
