Research On The Distributed Antenna Diversity Technology Based On The Mobile Communications

The distributed antenna technology is one of the multiple-antenna techniques in the future mobile communication systems. Pass the antenna unit in the whole small area hinterland reason position of even distribute, The distributed antenna can improve system to overlay a problem availably. On the other hand, the increment of the antenna density, make to move terminal to connect into the average distance of the system to reduce, as a result lowered terminal of average shoot power, prolong the service life of the battery.The distributed antennas are firstly used to cover some blind areas in communications,such as mines, tunnels, etc. In recent years, some literatures show that the distributed antenna technology also has the advantages in power control and capacity.In this dissertation ,we analyzed the characteristic and function of the distributed antenna first in carrying on the foundation of the discussion to many antenna technique principles, according to its characteristics point to the distributed antenna the cent gather a technique to carry on a research, and to the distributed antenna the indoor static state model take in to verify, the dissimilarity that analyzed the antenna unit installs project's influence for the system function, getting following conclusion: the distribute type antenna technique can lower to move terminal on the other hand of average shoot power;can raise a convenient door of system to correspond by letter successfully on the other hand all a rate, strengthen the usefulness of the power control.In the end we combines to analyze two kinds of usage projects of antennas that have already in the literatures with go into several MIMO techniques more mutually distributed antenna, passing to imitate to really carry on the capacity and cent to gather function respectively of comparison, put forward the new antenna usage project on this research foundation.This kind of new project and traditional project compare, having the salience of show to synthesize advantage, since can raise the quality that the system receives signal, can increase the capacity of the system again.