Implementation of an IF/Baseband Module for Wireless LAN

• Main Authors: Weng, Chi-Yu, 翁其羽
• Other Authors: Chiueh Tzi-Dar
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/05290724889713523807

碩士 === 國立臺灣大學 === 電機工程學系研究所 === 86 === Nowadays, the trend toward digital wirelss communication is obvious in the fie ld of persional communication. The ultimate objective may be a multimediatermi nal, capable of wireless access to a global network which can transportvoice, images, and video to the user. However, there are many factors that degrade th e communication quality. In this thesis, we will implement an IF/baseband arch itecture module for wirelss LAN on a 4-layer PCB.The proposed system, conformi ng to the IEEE 802.11 standard, employs DSSS techniques. The DSSS baseband pro cessor, IF modulator/demodulator, carrier frequency synthesizer, and the contr oler are put together to build the overallsystem. The data rate is 2Mbps and t he processing gain is 10.4dB in baseband.The IF carrier frequency is specified at 280MHz, whereas signal bandwidth is 22 MHz.The testing results prove that the IF/baseband module for WLAN fully works and meets the IEEE 802.11 standar d.