Noise characteristics analysis of OFDM system in low-voltage power line communication channels;

Technology to Switch Range and Merge Channel in Electronic Current Transformer;

Technology and application of error correction coding channel;

Based on the analysis of the of mobile satellite communication channel,the paper studied the(influence) of line-of-sight component and the variety of angle of incidence.

This thesis analyzes the environment of in-room wireless transmitting, and represents a 3D communication channel model in MATLAB using radial track.

A kind of hybrid wireless mesh network broadband wireless communication technology on the basis of WiFi is introduced in this paper by analyzing the environmental characters of wireless transmission in mine,built mine emergency wireless communication channel rapidly,and simulated used NS.

This paper mainly demonstrates the necessity to constructing suitable mathematics experiments on higher mathematics through information source coding、information channel coding and characteristics of discrete information source.

Using the transmission theory of communication,the reason for BER of signal channel in optical terminal receiver is analyzed.

We dissertated the base of theory about data communications in computer networks,including Jean Baptiste Fourier analyzing,limited bandwidth signal,and maximal speed of data transmission in signal channel.