Measurement and Analysis of Propagation Characteristic of the Indoor Radio Channels at 5.3GHz

• Main Authors: Bing-Jin Tseng, 曾並進
• Other Authors: Kun-Shan Chen
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/22105477359421046519

碩士 === 國立中央大學 === 電機工程研究所 === 91 === Abstract There is an increasing demand for high data rate wireless transmission for indoor radio network and personal communication network systems. The 5.3GHz frequency band is promising to support such applications since it offers wide bandwidths. However, higher operating frequencies and higher date rates result in increased multipath problem. Consequently, the radio propagation characteristic for indoor environment becomes an important research topic. This thesis reports the measurement and analysis of wideband radio channel in indoor propagation environment. The network analyzer, HP 8510C is used to measure the wideband signal propagation synchronously in frequency domain. By using FFT, the corresponding impulse signal in time domain is then analyzed. Because the antenna pattern used at the base station affects the propagation characteristic , we must consider all related factors in order to find out best coverage performance of the base station location in the measurement environment. In this thesis we reported measurements on wideband indoor channel characterization based on monopole antennas with different transmitter heights. Finally, in order to get accurate predications, a good description of the electromagnetic properties of the obstacles present in the environment is needed. A experiment was made in order to characterize the electromagnetic parameters of the building materials. Transmission and reflection coefficients were measured using the free-space technique. The slab model was used to estimate the permittivity and conductivity.