滤波器输入和输出的相干函数与互不相干函数的比较。-Filter input and output of the coherence function with separate function comparison.

Coherence between WAP and HTTP Ensuring Better Mobile Internet Security

Revised and enlarged version that discusses how to design a mobile communications system. Comprehensively examines the mobile radio environment. Covers prediction of propagation loss, calculation and methods of reducing fades, interference, frequency