DIGITAL MODULATION TECHNIQUES the material describes digital modulation techniques such as BINARY PHASE SHIFT KEYING (BPSK), DIFFERENTIAL PSK (DPSK), DIFFERENTIALLY-ENCODED PSK (DEPSK), QUADRATURE PSK (QPSK), QUADRATURE AMPLITUDE SHIFT KEYING (Q-AS

小波与微分求积法结合，用于求解梁的最大挠度值。-Wavelet and differential quadrature method for solving the maximum deflection of the beam.

这是微分求积法的程序算法，适用于需要离散的变量，在用的时候只需要添加自己的边界条件和已知量即可-This is the differential quadrature method of program algorithm for discrete variables need, when using only need to add your own boundary conditions and known quantities

Differential PSK (DPSK) 􀂄 Inexpensive 􀂄 Quadrature Phase Shift Keying (QPSK) 􀂄 Twice as spectrally efficient than BPSK 􀂄 Offset QPSK (OQPSK) 􀂄 reduce envelope variation 􀂄 π/4 QPSK 𙦦