It’s an emerging technology.
The newest heavy hitter in the competitive
world of broadband service.
It offers high-speed access.
Broadband over Power Lines (BPL) is also
known as Power line communication , power
line carrier (PLC),Power line Digital Subscriber
Line (PDSL), mains communication, power line
telecom (PLT), power line networking (PLN).
Coaxial cable: Cable tv get a high speed
connection to the internet.
Performance does not depend on distance
from central cable office.
Disadvantage of sharing the bandwidth
involved in it.
Wireless: Send and receive data from any
location within signal reach of an access
Broadband over Power Line (BPL) is a
technology that allows voice and Internet
data to be transmitted over utility power
It is an access solution that transmits data
over electricity wiring.
BPL : Electrical wiring is to
network computers and devices within
in a buildings.
BPL : It is a technology that
provides broadband access over
medium voltage power lines.
idea is not new.
companies have used this
technology for years to monitor the
performance of power grids.
transmission speed was slow.
Most BPL systems are designed to
operate in the frequency spectrum from
1.705 to 30 MHz, but occasionally up to 80
MHz, using MV and LV power distribution
In addition to
plant all the
way to a plug
in the wall.
Access BPL equipment consists of:
Injectors: BPL signals may be injected onto MV
power lines with the injectors.
Extractors: Provide interface between the medium
power lines & the customers.BPL extractors are
usually located at each LV distribution transformer
feeding a group of homes
Repeaters: For long runs of MV power
lines, repeaters are employed to maintain the
required signal strength.
last mile is the final step that carries
Internet into the subscriber's home or
In the various approaches to last-mile
solutions for BPL, some companies carry
the signal in with the electricity on the
power line, while others put wireless links
on the poles and send the data wirelessly
The signal is received by a
power line modem that
plugs into the wall.
BPL modems use silicon
chipsets specially designed
to handle the work load of
pulling data out of an
BPL modem has roughly
the size of a common
It plugs into a common
wall socket, and an
Ethernet cable running to
your computer finishes the
Speed Internet Access to Rural areas
speed that’s as fast as your
Flexible of modification
Simplicity of installation
would be no need to build a new
infrastructure. Anywhere there is electricity
there could be broadband. So cheaper.
data-encryption:The signals are
not in the air where neighbours or others
could potentially snoop your service.
Powerline adapters are sold with
encryption turned on . Secured network
through a simple password-setting process
the competitiveness of the
market for broadband services.
wire offers both power and your highspeed communications needs.
High Speed Internet Access
Voice Over IP
Home Security Systems
Interference issue: The system is expected
to use frequencies of 1 to 30 MHZ which has
been used by radio operators. Power lines
are shielded & have potential to interfere with
Harmonics & Intermodulation: The
interference caused by BPL harmonics is not
reduced even if the fundamental frequency is
notched. Intermodulation products are
frequently encountered in power lines at bad
joints, which readily produce mixing.
The power lines are inherently a very
noisy environment. Every time a device turns
on or off, it introduces a pop or click into the
BPL signals cannot readily pass through
transformers, as their high inductance makes
them act as low-pass filters.
system is based on shared bandwidth, in
part due to the tree design of the
No added costs – no expensive in-house
data cabling required or expensive wireless
Access to the
Ease of use and cost savings
Cost savings, no additional hardware or
Value for money, fun to use
Convenience, available through virtually all
Cost effective service
•BPL has been considered as a potential 3rd wire
that can compete with cable & DSL internet
•Electrical power lines offer a clear benefit ,but it
is important to remember that BPL provisioning
does not come without the additional
• As required, further refinements will be made to
BPL technologies to enable them to reduce