Research of the effects on the Channel Capacity of Wireless Communication systems using Antenna Arrays

• Main Authors: Kao-Chu Hsiao, 蕭高竹
• Other Authors: 李枝宏
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/34119998171903945916

碩士 === 國立臺灣大學 === 電信工程學研究所 === 101 === In wireless communication systems, channel fading caused by multipath propagation influences the reliability of information transmission and transmission quality. To provide higher transmission quality and spectral efficiency, MIMO uses the characteristic of independence between fading channels and the spatial multiplexing. As MIMO systems uses the multi-antenna array as its receiver and transmitter, our research focuses on the effects produced by multi-antenna array on communication systems. In our research, we consider two effects of multi-antenna array. The first effect is spatial correlation. Spatial correlation caused by array geometries, reduces the channel capacity. The second effect is the mutual coupling between the antennas. Our research considers these two effects, and discusses communication system performance using channel capacity. In our research simulation, we search the optimal array geometry in order to maximize channel capacity using particle swarm optimization. Moreover, we analyze the performance of channel capacity using uniform linear array (ULA), uniform circular array (UCA) and concentric ring array (CRA). Finally, we compare the channel capacity between these different array geometries, considering spatial correlation and mutual coupling.