The emphasis of the thesis is base - band signal shaping and programmable interpolation algorithm . we introduce the basic theory of base - band signal shaping , and the effect of the digitizing of the ideal raised cosine rollof signal g ( t ) is attentioned . the shaping filter parameters are determined based on the system specifications , and the simulation results are given 首先從降低鄰近碼間干擾原則出發(fā),討論了基帶成形的基本原理與升余弦滾降濾波器的時(shí)頻特性,重點(diǎn)分析將理想的滾降波形g ( t )數(shù)字化后對(duì)頻譜的影響,并且根據(jù)系統(tǒng)指標(biāo),確定了各項(xiàng)參數(shù),給出了具體的設(shè)計(jì)舉例和仿真結(jié)果。