Broadband White Papers
LMDS: Broadband Wireless Access
Overview Ground-based wireless networks delivering the full range of broadband services can be deployed quickly and inexpensively. Advances in fiber technology have extended the capacity of wide-area networks to trillions of bits per second. Meanwhile local-area networks are evolving from 10 megabits per second (Mbps) to gigabits per second. The connections between these two domains have not kept pace, the vast majority of copper-wire circuits being limited to about the 1.5 Mbps rate of a so-called T1 line. The typical home user faces a more extreme case of the same affliction, with data crawling between computer and Internet about 30 times slower, through a modem and phone line operating at a mere 56 kilobits per second (kbps). Of the variety of technologies developed for high-speed wireless access, local multipoint distribution service (LMDS) offers an ideal way to break through the local-access bottleneck. Like cell phone networks, LMDS is a wireless system but is designed to deliver data through the air at rates of up to 155 Mbps (typical cell phone voice calls use a mere 64 kbps, or 8 kbps in compressed digital systems). LMDS may be the key to bringing multimedia data to millions of customers worldwide. It supports voice connections, the Internet, videoconferencing, interactive gaming, video streaming and other high-speed data applications.
| Publisher | Scientific American | File Format | HTML |
|---|---|---|---|
| Date Published | August 2003 | Downloads | 13 |
| Format | White Papers | ||
| Topics | |||
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