User's Manual Part 2

RADWIN 2000 User Manual Release 2.5.30 24-1
Chapter 24
BRS/EBS Considerations
What is BRS/EBS
The Broadband Radio Service (BRS), formerly known as the Multipoint Distribution Service
(MDS)/Multichannel Multipoint Distribution Service (MMDS), is a US FCC regulated commer-
cial service. The relevant FCC rule is 47CFR part 27.
In the past, it was generally used for the transmission of data and video programming to sub-
scribers using high-powered wireless cable systems. However, over the years, it has evolved
to include digital two-way systems capable of providing high-speed, high-capacity broadband
service, including two-way Internet service via cellularized communication systems. Such ser-
vices provide consumers integrated access to voice, high-speed data, video-on-demand, and
interactive delivery services from a wireless device.
For further details see:
http://wireless.fcc.gov/services/index.htm?job=service_home&id=ebs_brs
This link (part of the FCC site) contains the Technical Rules covering matters such as:
• Operational scope
• Geographic service area
• Antenna registration
BRS/EBS Bands
The BRS/EBS band (post-transition) is illustrated in Figure 24-1 below and in more detail in
the three tables following.
Observe that the BRS/EBS spectrum is divided into small channels, mainly of 5.5 and 6 MHz.
There are two small ranges of 0.333 MHz channels as well.
BRS/EBS user may lease blocks of up to four contiguous channels to achieve their required
channel bandwidth. These are often referred to as single, double, triple or quad bands.