标题: | 结合天线与零核空间选择之多用户多输入单输出之波束成型系统 Transmit Antenna and Null Basis Selection in Multiuser MISO Beamforming Systems |
作者: | 翁苙钧 蔡尚澕 Wong, Li-Jyun Tsai, Shang-Ho 电控工程研究所 |
关键字: | 多使户多输入单输出系统;天线选择;波束成形技术;零核空间选择;MU-MISO system;Antenna selesction;Beamforming;Null basis selection |
公开日期: | 2015 |
摘要: | 这篇论文中,我们考虑在多用户多输入单输出系统下提出结合传送天线选择以及零核空间选择的演算法,当系统环境中使用者较少的情况下,我们试着决定射频链路最佳的使用数量以及得到波束成型向量。从模拟结果,我们发现利用提出的演算法能够得到最佳的射频链路数量以及改善系统的效能。此外,针对系统内的用户只有两位时,我们提出降低产生波束成型向量运算复杂度的方式。模拟结果显示出,利用我们提出的方式能有效地减低计算波束成型向量所需的运算。同时,系统增益的效能能够近乎原先的效能。 In this thesis, we propose an algorithm of combining transmit antenna and null basis selection for multiuser MISO system. We try to determine the optimal number of active RF chains and obtain beamforming vectors when the number of users is few in our system environment. From the simulation results, we find out that our proposed algorithm can obtain the optimal number of RF chains and improve the system performance. Furthermore, we propose a method for reducing computational complexity of generating beamforming vectors when number of users in system is two. The simulation results show that our proposed method can effectively reduce the computation on calculating beamforming vectors. At the same time, the system performance can be very close to the performance of proposed algorithm. |
URI: | http://etd.lib.nctu.edu.tw/cdrfb3/record/nctu/#GT070260008 http://hdl.handle.net/11536/138407 |
显示于类别: | Thesis |