Type of Document	Master's Thesis
Author	Li, Guoliang
URN	etd-3014171099642831
Title	Physical Layer Design for a Spread Spectrum Wireless LAN
Degree	Master of Science
Department	Electrical and Computer Engineering
Advisory Committee	Advisor Name Title Midkiff, Scott F. Woerner, Brian D. Sweeney, Dennis G. Committee Chair
Keywords	wireless LAN spread spectrum radio transceiver PN code
Date of Defense	1996-09-10
Availability	unrestricted
Abstract A wireless local area network (LAN) system is proposed to provide mobility for existing data communication services. This thesis presents a physical layer design for a direct sequence spread spectrum ISM band radio LAN system. This radio system employs spread spectrum communication technology and a differential binary phase shift keying/quadrature phase shift keying (BPSK/QPSK) non-coherent receiver to overcome the adverse indoor wireless environment. Moreover, a variable data rate transmission technique is used to dynamically configure the spread spectrum system according to channel performance. This physical layer incorporates the Zilog Z2000 Evaluation Board performing direct sequence spread spectrum processing, a Grayson 900 MHz radio receiver and a transmitter module which was designed and built at Virginia Tech. The transmitted spectrum occupies a 4 MHz bandwidth in the 900 MHz ISM band and this system supports a data rate of up to 363 Kbits/sec. The spread spectrum system design along with detailed descriptions of hardware and control software development are presented.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access    etd.pdf 1.24 Mb 00:05:44 00:02:57 00:02:34 00:01:17 00:00:06   guoliang_li.pdf 1.24 Mb 00:05:44 00:02:57 00:02:34 00:01:17 00:00:06

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