【摘要】 数字传输系统中,应用第一类部分响应传输能获得奈奎斯特极限速率,且频带利用率达到理论极值。部分响应波形的形成滤波器在理论上呈余弦状,在物理上不能用模拟元件实现。文章利用抽样定理,首次由频谱的混叠导出物理上可实现的第一类部分响应形成滤波器特性。更多还原

【Abstract】 In digital transmission system,Nyquest’s rate can be obtained and the efficiency of frequency band will achieve the theory limit value by using the first class partial response transmission.On the theoretical,the shape of the first class partial filters is cosine form,and on the physical,it can not be realized by using analog element.By using Sampling Theorem,the paper first deduce the characteristics of the first class partial response shaping filter that can be realized on the physical from the spectrum overlap.更多还原