LTE-A 技術擁有高傳輸速度與高頻寬優點，及高速移動速度下有較優質的吞吐量(throughput)，將在下一代無線行動通訊系統扮演著重要的角色，將以提供未來IMT-Advanced 無線通訊系統參考之依據，當次世代行動通訊系統使用之頻寬越來越大時，因不同時間、環境，基地台範圍覆蓋下之使用者，有時密集，有時鬆散，當使用者人數鬆散，基地台頻寬使用效率變差，於此基地台協調合作新的技術產生，來使頻寬有效利用，而提高使用者之訊號準確。 鑑於文獻基地台協調合作技術下有幾項優點，如降低雜訊干擾、增加接收分集效果、增加接收端增益…等，由於使用此技術時需要付出較大量頻寬，本論文將探討基地台協調合作技術下頻寬使用情形，對使用者影響情形，當使用不同傳輸模式TDD 或FDD 之差別。當考慮微小型基地台(Femto cell)與訊號增益器(Repeater)時，基地台之頻寬使用情形及與系統之影響。 本論文將可提供基地台佈設與何時使用基地台協調合作技術參考，加入Femto cell 與Repeater 可模擬室內情況，使得使用情境更加完善。 LTE-A technique will play an important roll in the next generation wireless communication system due to it has the advantages of high transmission rate and wide communication bandwidth especially it has high quality throughput when the uses is moving in high velocity. The system performance and parameters characteristics resulting from utilizing LTE-A technique will be provided to the system designers as the references to the development of future IMT-Advanced wireless communication system. When the system bandwidth becomes wider the system utilization performance will be varied widely and becomes inefficiency because the number of users served in the system coverage areas will be varied and the signal transmission environments are changed. It needs to adopt coordination technique among base stations so as to effectively utilize the system resources and to improve the signal purity in its transmission. It has many advantages when considering coordination among base stations such as the reduction of system interference, the improvement of diversity effect and the increase of system gain at the receiver terminal etc. However it has the requirement of increasing system bandwidth when the coordination among base stations is considered. In this study when the coordination among base stations are implemented the following system characteristics such as the system capacity, the required system bandwidth, the effect on the users and the performance difference when FDD or TDD technique is implemented etc. will be investigated. Specifically it will also consider the system performance when Femto cells or Repeaters are included in the system. When the data characterizing the system performance are generated and studied they can be provided as references in the base stations installations and they can also be provided as the procedures of how and when to coordinating among various base stations. With Femto cells and Repeaters are included in the system they can be used to simulate the indoor transmission environments and to provide better services to users.
