Study on the resisting multipath decline technique and its application in mine CDMA mobile communication system

The multipath decline is severe in limited space (such as in tunnel, in laneway and in building), so the quality of mobile communication in it drops sharply. The abilities of spread spectrum communication technique and diversity reception technique to resist multipath decline are studied firstly, and then the techniques are used synthetically in mine Code Division Multiple Access (CDMA) mobile communication system. Finally, a mine CDMA mobile communication system forward link-simulating model is built, a bit error curve of the model is got and the simulating result demonstrates that the performance of the system to resist multipath decline is improved awfully.