This chapter treats the design of linear-phase FIR filters. The assignments are divided in two parts, the first part focuses on the design of FIR filters using the window design method while the second part focuses on design of equiripple FIR filters

实现QPSK调制，采用两种方法相位选择法和I/Q两路相加法-QPSK modulation using two phase selection method and I/Q two-way additive method