Design And Application Of TD-SCDMA Repeater

With the increasing heat of construction of the 3rd generation mobile communication criterion TD-SCDMA, fully owned intellectual property rights by China, will be constructed and applied largely under the heavily sustain of our government. The application effect of repeater of TD-SCDMA will be affected by the two problems: first, the TDD criterion and the smart antenna technology are adopted by TD-SCDMA, which are different from the technology criterion of 2G system; second, the optimizing of network of repeater is also different from the 2G system and WCDMA system. In this dissertation, the following problems are analyzed and researched mostly:The current developed state of TD-SCDMA system is reviewed. Specially, the thesis points out the opportunity and challenges for the development of TD-SCDMA. The interference problems of repeater to the network are researched. Firstly, the effect to self-system is given; Secondly, the effects on the different system such as WCDMA, GSM and DCS1800 system are described. The solutions to different interference are presented.Give the repeater’s hardware design, chain circuit budget,elements choosing and optimization simulation are described. And the test result of the whole repeater is also presented.The application principia of repeater and the involved problems in design are analyzing in detail, the implement steps, the problems and the solution in the application of repeater are presented.