Performance Evaluation of IEEE 802.11g With Smart Antenna System in the Presence of Bluetooth Interference Environment

• Main Authors: Feng-Pin Chang, 張峰賓
• Other Authors: Shiann-Shiun Jeng
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/24258216025974805542

碩士 === 國立東華大學 === 電機工程學系 === 93 === IEEE 802.11g combines the advantages of IEEE 802.11a and IEEE 802.11b. The operating band of 802.11g is the 2.4 GHz. However, Bluetooth system also utilizes this band. IEEE 802.11g avoids the collision problems by CSMA/CA ,and Bluetooth takes the advantage of LMP to avoid collision. However, interference between 802.11g and Bluetooth can not be ignored. This thesis applies the beamforming algorithms of smart antenna system including the dominant DOA and the pseudoinverse DOA to the 802.11g system and evaluates the performance of 802.11g system under the co-channel interference of Bluetooth. The simulation results show that when DOA based beamforming algorithms are applied to IEEE 802.11g, the BER will decrease. The DOA based beamforming algorithms can improve the fading phenomenon due to multipath transmission, increase the gain of signal, and suppress the co-channel interference between devices. Therefore, the smart antenna can boost the communication quality of IEEE 802.11g system.