Performance Evaluation of Smart Antenna System in Near-Far Echoes Model

• Main Authors: Jr-Shiou Wu, 吳志修
• Other Authors: Shiann-Shiun Jeng
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/46016085225381916720

碩士 === 國立東華大學 === 電機工程學系 === 90 === Next-generation wireless (NextG) involves the concept that the next generation of wireless communications will be a major move toward ubiquitous wireless communications systems and seamless high-quality wireless services. Ubiquitous communications involve a desire that continues to drive people’s expectations of wireless technologies. In traditional wireless communications, using low gain omni-directional antennas will be subjected to the effect of multi-path fading and co-channel interference. Smart antenna, consisting of a set of phase array antennas and with unique beamforming technologies, can reduce delay spread, mitigate multi-path fading, eliminate co-channel interference, improve transmission efficiency and increase system capacity. The objective of this thesis is to study the performance of smart antenna beamforming approaches, complex conjugate spatial signature approach and pseudoinverse DOA approach, under the near-far echoes propagation channel model. The simulation results show that using the smart antenna beamforming approaches can improve system’s performance。