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Current wireless LANs that are small enough for portable computing devices have transmission rates up to a few Mbit/s, at the lower end of that obtained in IEEE 802-compliant wired LANs. These LANs can provide a useful service when the application demands and number of users are kept low. Much higher performance, from several 10's of Mbit/s to over 100 Mbit/s, is needed to accommodate more users and multimedia traffic. This paper proposes a radio solution at millimetre wavelength frequencies where there is sufficient spectrum to accommodate link speeds of hundreds-of-megabits-per-second. Using a test-bed with a burst-mode transmission capability and experimental 40 GHz radio, we have demonstrated a pico-cellular approach with a range of approximately 10 metres and link rates up to 185 Mbit/s. Additionally, we have built a prototype modem with a raw link rate of 54 Mbit/s for use in a demonstrator high-speed indoor WLAN. This paper presents the architecture of the proposed WLAN and the design and performance of the prototype modem. Section 2 discusses key design decisions that follow from the choice of spectrum and propagation characteristics in the millimetre-wave band. Section 3 describes the overall WLAN system architecture. Section 4 describes the prototype modem implementation and performance.
Communications, local-area network design, wireless networks, mm-wave band, modems
David J. Skellern, L.h. Charles Lee, Tom McDermott, Neil H.E. Weste, John Dalton, Jeffrey Graham, Tan F. Wong, Andrew F. Myles, Terence M.P. Percival, Philip J. Ryan, "A High-Speed Wireless LAN", IEEE Micro, vol. 17, no. , pp. 40-47, January/February 1997, doi:10.1109/40.566198
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