CAJ | 학술논문

通过理论分析建立了近似核和量化位数之间的约束关系,并提出无需乘法运算的高阶近似核,用于提高单比特测频算法的动态范围.此算法同时对基于近似核的傅里叶系数实部或虚部最大值附近的DFT系数内插构造频率修正项.可以避免常规测频校正算法的复数运算从而有效减少运算量.此算法简单且宜于硬件快速实现,其有效性得到了理论分析和仿真结果的验证.
통과이론분석건립료근사핵화양화위수지간적약속관계,병제출무수승법운산적고계근사핵,용우제고단비특측빈산법적동태범위.차산법동시대기우근사핵적부리협계수실부혹허부최대치부근적DFT계수내삽구조빈솔수정항.가이피면상규측빈교정산법적복수운산종이유효감소운산량.차산법간단차의우경건쾌속실현,기유효성득도료이론분석화방진결과적험증.
The relationship between the approximate kernel and quantization bits is established based on the theoretical analysis.A new technique using high order approximations to kernel function with out multiplication operation is presented to improve the dynamic range for monobit frequency estimator.The algorithm includes the frequency correction by interpolation using the adjacent bin of the maximum of the real or imaginary parts of the Fourier coefficients,thus the computation cost is efficiently decreased to avoid the complex operations of the traditonal frequency correction algorithm.The algorithm is simple and easy for the hardware implemeniation.Finally,the efficiency of the algorithm is verified by theoretical analysis and simulations.