摘要
频偏与判决门限对数字匹配滤波器的捕获性能影响巨大,因此研究实现抗频偏算法及自适应门限调整策略对捕获有非常重要的意义。文章设计实现了适合FPGA实现的基于数字匹配滤波器的时频二维搜索算法和自适应门限调整策略并且在FPGA上实现。
Frequency offset and decision threshold greatly influence acquisition performance of the digital matched filter （DMF）, so it is of great significance to research the anti-frequency offset algorithm and the strategy of adaptive threshold search. This paper describes the design of a time-frequency two dimension search algorithm based on DMF and an adaptive threshold strategy suitable for FPGA implementation. This design has been implemented with FPGA.
出处
《通信技术》
2009年第4期16-18,21,共4页
Communications Technology
关键词
数字匹配滤波器
捕获
频偏
自适应门限
digital matched filter
acquisition
frequency offset
adaptive threshold
