Ultra-wideband Wireless Channel Analysis Based On Time-Domain Algorithm

In recent years, with the rapid development of wireless communication technology, wirelessspectrum resources dwindling, increasing number of interference, however people are moreparticular about high-speed and high-quality wireless multimedia services. Ultra widebandtechnology has good concealment and low probability of detection probability, stronganti-interference ability, strong anti-multipath ability, high penetration characteristics, So，it is verysuitable for the development of short-range high-speed wireless communications. The wirelesschannel as a medium of wireless communication is a key factor that affects the communicationquality. Therefore it is necessary to uncertainty modeling and analysis of ultra-wideband wirelesschannels. In this paper, finite-difference time-domain method (FDTD) algorithm to analyze UWBchannel model receiving point field strength data, and then further with CLEAN algorithm to getelectric field intensity data to extract the channel impulse response, and thus can analyze the UWBmodel of the channel parameters.The main content of this paper is as follows:(1) Understanding of the development status of the wireless channel and UWB technologyresearch by reading a lot of the relevant literature at home and abroad.then give a simple overviewabout UWB wireless channel. So, first analysis the IEEE802.15.3a typical indoor channel modelusing FDTD algorithm.(2) Establishing a typical tent model by FDTD algorithm, get the receiving point electric fieldintensity waveform, and in comparison with the received waveform in the literature to verify thecorrectness of the algorithm.At the moment, research on UWB indoor channel model is relativelymature. And then extends to the outdoor channel model, establish two types of short-rangecommunication model. And focus on analysis of the received signal in the case of line-of-sight andnon-line-of-sight model.(3) Using CLEAN time-domain post-processing algorithm in analysis of UWB channel,impulse response of wireless channel is extracted, and obtain the relevant parameters of thechannel,such as average additional delay, RMS delay spread, the peak of10dB the number ofmulti-path component and the path loss characteristics.