Local multipoint distribution service (LMDS) is a broadband wireless access technology originally designed for digital television transmission (DTV). It was conceived as a fixed wireless, point-to-multipoint technology for utilization in the last mile.[1]
LMDS commonly operates on microwave frequencies across the 26 GHz and 29 GHz bands. In the United States, frequencies from 31.0 through 31.3 GHz are also considered LMDS frequencies.[2]
Throughput capacity and reliable distance of the link depends on common radio link constraints and the modulation method used – either phase-shift keying or amplitude modulation. Distance is typically limited to about 1.5 miles (2.4 km) due to rain fade attenuation constraints. Deployment links of up to 5 miles (8.0 km) from the base station are possible in some circumstances such as in point-to-point systems that can reach slightly farther distances due to increased antenna gain.
^Local Multipoint Distribution Service (LDMS), by Vinod Tipparaju, November 23, 1999, cis.ohio-state.edu via CiteseerX.
^"Local Multipoint Distribution Service". Federal Communications Commission. 30 July 2018. Retrieved January 12, 2021.
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