摘要
在重叠一半的数字信道化接收机的基础上,提出了重叠因子的概念、推导并实现了在重叠因子任意的数字信道化接收机的高效结构。与重叠一半的数字信道化接收机相比,这个结构通过减小重叠因子使最大抽取因子至少提高了50%,从而大大减轻了对后续处理速度的要求。另外还探讨了重叠因子和系统运算量之间的关系,为重叠因子的选取提供了依据。最后,借助Matlab软件仿真,验证结论的有效性。
Based on the structure of the half overlap ployphase filtering channelized receivers,the overlap factor was put forward and the effective structure of channelized receivers adapting to any overlap factor was bring forward.Compared with the half overlap ployphase filtering channelized receivers,the maximum decimation factor was increased by more than fifty percent by decreasing the overlap factor.The relationship between overlap factor and system complexity and the standard for choice of the overlap factor are discussed.Finally the simulation results show the accuracy of the conclusion.
出处
《火力与指挥控制》
CSCD
北大核心
2011年第7期68-71,共4页
Fire Control & Command Control
关键词
信道化
重叠因子
多相滤波
WOLA结构
channelization
overlap factor
polyphase filtering.WOLA structure
