The Report Of Microcell Bs Radio Frequency Unit

The TD-SCDMA mobile communication system is the first international telecom standard proposed by Chinese. It integrates a lot of TDD technology and CDMA technology advantages, such as flexible air interface, smart antenna, joint detection etc. Thereby, it can achieve high frequency efficiency and offer large system capacity. For the wireless communications system in the future higher data speed and system capacity is expected. More and more densely populated high-rise buildings within the Department and have a "blind spot" areas to be covered more and more.With 3G technology is reaching maturity and expansion of business volume, macrocell in the wireless coverage, there were many "blind spot" With the tremendous growth of business degree, macrocell "hot spot" areas have failed to meet market demand. Micro-cellular base station can be used to increase the wireless coverage to eliminate macrocell in the "blind spots." At the same time because of low transmitting power of the micro-cellular base stations to allow a smaller frequency reuse distance of each unit area larger number of channels, so that business has been tremendous growth in the density, it would be placed in the macrocell of the "hot spots", it can be micro-region to meet the quality and capacity of two requirements. Based on the above considerations, this article will be micro-cellular base stations and Acer points difference (RF part) made a detailed analysis of the reception, launch link indicators of decomposition, to identify the key points, select the appropriate device. Device characteristics through the link simulation, experimental verification of the results of the various indicators, and made this micro-cellular base stations. Link Simulation done using the system is validated through the testing and commissioning of key device evaluation board to verify the device performance. In RFU key components of each board to do the matching, and link integrity testing in detail. Testing results need to achieve the desired targets. The micro-cellular base station transceiver part of the full compliance test requirements, can be used in micro-cellular base stations, used in the mobile network.