本文探讨了数字信号的频谱成形技术。对于频谱成形问题,给出了与工程要求相一致的优化准则,并据此导出了相应的方程或最优解的搜索方法。本文也对基带成形滤波器的实现方案作了大致分类。 This article explores the spectral shaping of digital signals. For the spectrum shaping problem, the optimization criterion that is consistent with the engineering requirements is given, and the corresponding equation or search method for the optimal solution is deduced accordingly. This article also made a broad classification of the baseband shaping filter implementation.