The Resolution of Antenna Separation between GSM and WCDMA System Co-existence

• Main Authors: Hong-Yan Lin, 林宏彥
• Other Authors: JFan
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/61950610755380083762

碩士 === 國立海洋大學 === 導航與通訊系碩士班 === 91 === This paper presents the isolation requirements for UMTS interference from GSM1800 down-link ,especially considering the co-location of both base-stations .The co-existence of both systems can be operated properly when the level of generated interference signals has been decreased by the coupling loss （isolation）between their antennas , and does not degrade the sensitivity for wanted signals of the receiver of desired base-station beyond a certain limit . The methods to achieve the required isolation has been focused on the physical antenna separation and external duplex filter design criterion . The analysis also shows that the antenna separation using free-space propagation may not be true in comparison with our field measurements results .