13-05-2011, 11:23 AM
Presented By :
Rishi Sachan
Power Line Communication.pptx (Size: 600.63 KB / Downloads: 112)
Power Line Communication
What is PLC?
PLC – Powerline Communications
Using powerline as transmission medium for data communication
It uses the existing power lines to transmit data from one device to another.
This makes power line communication one of the best means for networking
History of PLC
-From high voltage (HV)low voltage (LV)
-Low data ratehigh data rate
-Control applicationmultimedia data applications
Motivation
-Cheap “the last mile” solution
-However, worse channel than other wired network
-Channel characterizationreliable communications
Three network levels
High voltage (110–380 kV)
Medium voltage (10–30 kV)
Low voltage (230/400 V, in the USA 110 V)
Efficient coupling
Inductive coupling
Conductive coupling
Modulation and error correction
OFDM, DMT
CDMA
FEC
How PLC works?
It operates by impressing a modulated carrier signal on the wiring system.
Data rates over a power line communication system vary widely.
BroadBand through PLC
High speed connection to internet
-Greater than 128kbps
-Always on!
-Simultaneous up-link and down-link communication
Leading broadband access technologies
-xDSL,cable,satellite,ISDN digital modems
Basic BPL System
BPL Injector
BPL Repeater
In-home PLC
PLC Network
Noise to signal ratio
Electro Magnetic Control
Wide Band modulations
-The signal is spread over a wide bandwidth instead of being concentrated at a strong single carrier.
-This means that power spectral density is lower than with single carrier modulation,reducing the possibility of interfering other users of spectrum.
Adaptive transmission power
-PLC technology can have an adaptive transmission power,so that the system only injects the minimum signal level required to achieve the desired performance level.
-Equipment is typically transmitting with much less power than nominal level,thus reducing any potential emissions to a minimum.
Major PLC providers
PLC access technology roadmap
Features of PLC & its future
Powerline communication improves customer experience
-easy to use ,just plug it in and its connected.
-no coverage problems due to walls.
-no need for new wires.
-no antennas(psychological factors)
-Ubiquitous – works in every plug.
-Low Cost
-High Speed: up to 200mbps
-High synergies with other technologies(WLAN,BLUETOOTH,DSL,Cable)
Rishi Sachan
Power Line Communication.pptx (Size: 600.63 KB / Downloads: 112)
Power Line Communication
What is PLC?
PLC – Powerline Communications
Using powerline as transmission medium for data communication
It uses the existing power lines to transmit data from one device to another.
This makes power line communication one of the best means for networking
History of PLC
-From high voltage (HV)low voltage (LV)
-Low data ratehigh data rate
-Control applicationmultimedia data applications
Motivation
-Cheap “the last mile” solution
-However, worse channel than other wired network
-Channel characterizationreliable communications
Three network levels
High voltage (110–380 kV)
Medium voltage (10–30 kV)
Low voltage (230/400 V, in the USA 110 V)
Efficient coupling
Inductive coupling
Conductive coupling
Modulation and error correction
OFDM, DMT
CDMA
FEC
How PLC works?
It operates by impressing a modulated carrier signal on the wiring system.
Data rates over a power line communication system vary widely.
BroadBand through PLC
High speed connection to internet
-Greater than 128kbps
-Always on!
-Simultaneous up-link and down-link communication
Leading broadband access technologies
-xDSL,cable,satellite,ISDN digital modems
Basic BPL System
BPL Injector
BPL Repeater
In-home PLC
PLC Network
Noise to signal ratio
Electro Magnetic Control
Wide Band modulations
-The signal is spread over a wide bandwidth instead of being concentrated at a strong single carrier.
-This means that power spectral density is lower than with single carrier modulation,reducing the possibility of interfering other users of spectrum.
Adaptive transmission power
-PLC technology can have an adaptive transmission power,so that the system only injects the minimum signal level required to achieve the desired performance level.
-Equipment is typically transmitting with much less power than nominal level,thus reducing any potential emissions to a minimum.
Major PLC providers
PLC access technology roadmap
Features of PLC & its future
Powerline communication improves customer experience
-easy to use ,just plug it in and its connected.
-no coverage problems due to walls.
-no need for new wires.
-no antennas(psychological factors)
-Ubiquitous – works in every plug.
-Low Cost
-High Speed: up to 200mbps
-High synergies with other technologies(WLAN,BLUETOOTH,DSL,Cable)