【摘要】 用软件实现数字视频信号信道编码中基带滤波和正交幅度调制的计算，将输入的二进制数据串转换成调制信号的波形数据文件，使任意信号发生器（LW420）产生符合信道编码标准的各种QAM调制信号。更多还原

【Abstract】 Software implementation for baseband shaping and QAM（Quadrature Amplifier Modulation）， which are parts of channel encoding in DVB， is described． Importing the wave date file， created from the inputed serial data stream by the software． Arbitrary Waveform Generator-LW420 will output QAM waveform which are accord with European Telecommunication Standard（ETS）．更多还原