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Cable BroadbandEOC (Ethernet On Cable)
By
Introduction
Introduction Evolution of CATV -o CATV is originally used for uni dire
ctional TV signal -o CATV is upgraded to allow bi direc
tional comm1048766 We need a communication device
that provides return path
ByC a b l e B r o a d b a n d
ByC a b l e B r o a d b a n d
o 1st generation not based on widely ac cepted on standards
o 2 nd generation based on standards DOCSIS(USA) and DVBDAVIC (Europe)
o 3 rd generation wireless modems or s ome more symmetrical cable modems
Generation of cable modem to cover
ByC a b l e B r o a d b a n d
1 A n optical connection between th e distribution center at the HE an d the ONU
2 A coaxial connection between the ONU and the subscriber
HFC network consists of
TTT T TT TTTT TTT TTTTTTTT TT gh speed data service throu gh optical and coaxial cables
T T T TTTT TTTT T TTTT ( Termination System) installe
d at the Head End and the C M(Cable Modem) installed at
the end user
ByC a b l e B r o a d b a n d
The HFC network has a upstream fre quency of 5 MHz ~ 4 2 MHz and5
4MHz ~ 750MHz for downstream Th e upstream frequency is used for CA
TV signals and data services The fre quency range can be expanded up to
2GHz and about 80 of service prov iders has expanded to 750~870MHz
로 and about 70 can use the range of up to 750MHz
Frequency Use in HFC Network
ByC a b l e B r o a d b a n d
Configuration (In the Network)
CMTS
HE
ONU
CM CM CM
CM CM CM
- 100 330Max ~ km ( Mbits)
bull CMTS Cable Modem Terminati on System
bull CM Cable Modem CM can only talk to CMTS while CMTS can talk(broadcast) to any(all)
Solution 1
ByC a b l e B r o a d b a n d
-CMTS in the head end Cable Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
- -encoding QPSK16 QAM- - total BW 5 42 [65] Mhz- single slot BW 02ndash64MHz- single slot data rate
1 0 3 0 in ver1 x ver 20 Mbps
- -64encoding QA-256M QAM
- total BW 42 [65]-86 T TT0
- 6single slot BW [ 8 ]- single slot data r
ate 30ndash40 Mbps
ByC a b l e B r o a d b a n d
Configuration (In the Network)
Switch
HE
Master
CDM CDM CDM
CDM CDM CDM
Max ~2 km (100 Mbits)
bull ONU Optical Network Unit (Master)
bull CD M Cable Data Modem
Solution 2 (LS HFC)
ONU
Switch is an optical switch TTTTT T TTT T TTTT TT TTTTTTTTT T TTT TTTTT T TTTT
The cable modem works with STBpartially
ByC a b l e B r o a d b a n d
Master in ONU Cable Data Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
-encoding OFDM256 QAT- - total BW 2 34 [32] Mhz- No limit for uploading fo r UCC VoIP
ByC a b l e B r o a d b a n d
Modulation CDM are based on TT TTTTTTTTT TTTTTTTT(
T TTTTTTT T TTTTTTTTTTTT) modulation This is alre ady used in xDSL WLAN and PLC to name a few
This type of modulation enables the HFC netwTTT TT TTTTTTTT TTT TTTTTTTT TTTTTTT TTTTTTTTTTT
e noise and time delay on a coaxial network Some strong points of OFDM is as the following
1048766 - It is efficient in multi path fading channels with l arge time spreads
1048766 The data rate per subscriber is adaptable (accor ding to the SNR detected at this subcarrier)
1048766 Interferences (and impulsive noise) only affect s ome carriers while the remaining carriers ensure r
eliable communication
ByC a b l e B r o a d b a n d 50Coaxial network Attenuation is less than dB for better performance
Link Budget
ByC a b l e B r o a d b a n d
LS HFC Equipment
L2 Switch
Outdoor Master
Indoor Master
CPE Modem
Indoor Diplexer
Indoor Spliter Diplexer
Outdoor Diplexer
ByC a b l e B r o a d b a n d
Example Network 1Ethernet On Cable Outdoor
ByC a b l e B r o a d b a n d
Ethernet On Cable IndoorExample Network 2
THANK YOU
ByC a b l e B r o a d b a n d
Introduction Evolution of CATV -o CATV is originally used for uni dire
ctional TV signal -o CATV is upgraded to allow bi direc
tional comm1048766 We need a communication device
that provides return path
ByC a b l e B r o a d b a n d
ByC a b l e B r o a d b a n d
o 1st generation not based on widely ac cepted on standards
o 2 nd generation based on standards DOCSIS(USA) and DVBDAVIC (Europe)
o 3 rd generation wireless modems or s ome more symmetrical cable modems
Generation of cable modem to cover
ByC a b l e B r o a d b a n d
1 A n optical connection between th e distribution center at the HE an d the ONU
2 A coaxial connection between the ONU and the subscriber
HFC network consists of
TTT T TT TTTT TTT TTTTTTTT TT gh speed data service throu gh optical and coaxial cables
T T T TTTT TTTT T TTTT ( Termination System) installe
d at the Head End and the C M(Cable Modem) installed at
the end user
ByC a b l e B r o a d b a n d
The HFC network has a upstream fre quency of 5 MHz ~ 4 2 MHz and5
4MHz ~ 750MHz for downstream Th e upstream frequency is used for CA
TV signals and data services The fre quency range can be expanded up to
2GHz and about 80 of service prov iders has expanded to 750~870MHz
로 and about 70 can use the range of up to 750MHz
Frequency Use in HFC Network
ByC a b l e B r o a d b a n d
Configuration (In the Network)
CMTS
HE
ONU
CM CM CM
CM CM CM
- 100 330Max ~ km ( Mbits)
bull CMTS Cable Modem Terminati on System
bull CM Cable Modem CM can only talk to CMTS while CMTS can talk(broadcast) to any(all)
Solution 1
ByC a b l e B r o a d b a n d
-CMTS in the head end Cable Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
- -encoding QPSK16 QAM- - total BW 5 42 [65] Mhz- single slot BW 02ndash64MHz- single slot data rate
1 0 3 0 in ver1 x ver 20 Mbps
- -64encoding QA-256M QAM
- total BW 42 [65]-86 T TT0
- 6single slot BW [ 8 ]- single slot data r
ate 30ndash40 Mbps
ByC a b l e B r o a d b a n d
Configuration (In the Network)
Switch
HE
Master
CDM CDM CDM
CDM CDM CDM
Max ~2 km (100 Mbits)
bull ONU Optical Network Unit (Master)
bull CD M Cable Data Modem
Solution 2 (LS HFC)
ONU
Switch is an optical switch TTTTT T TTT T TTTT TT TTTTTTTTT T TTT TTTTT T TTTT
The cable modem works with STBpartially
ByC a b l e B r o a d b a n d
Master in ONU Cable Data Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
-encoding OFDM256 QAT- - total BW 2 34 [32] Mhz- No limit for uploading fo r UCC VoIP
ByC a b l e B r o a d b a n d
Modulation CDM are based on TT TTTTTTTTT TTTTTTTT(
T TTTTTTT T TTTTTTTTTTTT) modulation This is alre ady used in xDSL WLAN and PLC to name a few
This type of modulation enables the HFC netwTTT TT TTTTTTTT TTT TTTTTTTT TTTTTTT TTTTTTTTTTT
e noise and time delay on a coaxial network Some strong points of OFDM is as the following
1048766 - It is efficient in multi path fading channels with l arge time spreads
1048766 The data rate per subscriber is adaptable (accor ding to the SNR detected at this subcarrier)
1048766 Interferences (and impulsive noise) only affect s ome carriers while the remaining carriers ensure r
eliable communication
ByC a b l e B r o a d b a n d 50Coaxial network Attenuation is less than dB for better performance
Link Budget
ByC a b l e B r o a d b a n d
LS HFC Equipment
L2 Switch
Outdoor Master
Indoor Master
CPE Modem
Indoor Diplexer
Indoor Spliter Diplexer
Outdoor Diplexer
ByC a b l e B r o a d b a n d
Example Network 1Ethernet On Cable Outdoor
ByC a b l e B r o a d b a n d
Ethernet On Cable IndoorExample Network 2
THANK YOU
ByC a b l e B r o a d b a n d
ByC a b l e B r o a d b a n d
o 1st generation not based on widely ac cepted on standards
o 2 nd generation based on standards DOCSIS(USA) and DVBDAVIC (Europe)
o 3 rd generation wireless modems or s ome more symmetrical cable modems
Generation of cable modem to cover
ByC a b l e B r o a d b a n d
1 A n optical connection between th e distribution center at the HE an d the ONU
2 A coaxial connection between the ONU and the subscriber
HFC network consists of
TTT T TT TTTT TTT TTTTTTTT TT gh speed data service throu gh optical and coaxial cables
T T T TTTT TTTT T TTTT ( Termination System) installe
d at the Head End and the C M(Cable Modem) installed at
the end user
ByC a b l e B r o a d b a n d
The HFC network has a upstream fre quency of 5 MHz ~ 4 2 MHz and5
4MHz ~ 750MHz for downstream Th e upstream frequency is used for CA
TV signals and data services The fre quency range can be expanded up to
2GHz and about 80 of service prov iders has expanded to 750~870MHz
로 and about 70 can use the range of up to 750MHz
Frequency Use in HFC Network
ByC a b l e B r o a d b a n d
Configuration (In the Network)
CMTS
HE
ONU
CM CM CM
CM CM CM
- 100 330Max ~ km ( Mbits)
bull CMTS Cable Modem Terminati on System
bull CM Cable Modem CM can only talk to CMTS while CMTS can talk(broadcast) to any(all)
Solution 1
ByC a b l e B r o a d b a n d
-CMTS in the head end Cable Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
- -encoding QPSK16 QAM- - total BW 5 42 [65] Mhz- single slot BW 02ndash64MHz- single slot data rate
1 0 3 0 in ver1 x ver 20 Mbps
- -64encoding QA-256M QAM
- total BW 42 [65]-86 T TT0
- 6single slot BW [ 8 ]- single slot data r
ate 30ndash40 Mbps
ByC a b l e B r o a d b a n d
Configuration (In the Network)
Switch
HE
Master
CDM CDM CDM
CDM CDM CDM
Max ~2 km (100 Mbits)
bull ONU Optical Network Unit (Master)
bull CD M Cable Data Modem
Solution 2 (LS HFC)
ONU
Switch is an optical switch TTTTT T TTT T TTTT TT TTTTTTTTT T TTT TTTTT T TTTT
The cable modem works with STBpartially
ByC a b l e B r o a d b a n d
Master in ONU Cable Data Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
-encoding OFDM256 QAT- - total BW 2 34 [32] Mhz- No limit for uploading fo r UCC VoIP
ByC a b l e B r o a d b a n d
Modulation CDM are based on TT TTTTTTTTT TTTTTTTT(
T TTTTTTT T TTTTTTTTTTTT) modulation This is alre ady used in xDSL WLAN and PLC to name a few
This type of modulation enables the HFC netwTTT TT TTTTTTTT TTT TTTTTTTT TTTTTTT TTTTTTTTTTT
e noise and time delay on a coaxial network Some strong points of OFDM is as the following
1048766 - It is efficient in multi path fading channels with l arge time spreads
1048766 The data rate per subscriber is adaptable (accor ding to the SNR detected at this subcarrier)
1048766 Interferences (and impulsive noise) only affect s ome carriers while the remaining carriers ensure r
eliable communication
ByC a b l e B r o a d b a n d 50Coaxial network Attenuation is less than dB for better performance
Link Budget
ByC a b l e B r o a d b a n d
LS HFC Equipment
L2 Switch
Outdoor Master
Indoor Master
CPE Modem
Indoor Diplexer
Indoor Spliter Diplexer
Outdoor Diplexer
ByC a b l e B r o a d b a n d
Example Network 1Ethernet On Cable Outdoor
ByC a b l e B r o a d b a n d
Ethernet On Cable IndoorExample Network 2
THANK YOU
ByC a b l e B r o a d b a n d
ByC a b l e B r o a d b a n d
1 A n optical connection between th e distribution center at the HE an d the ONU
2 A coaxial connection between the ONU and the subscriber
HFC network consists of
TTT T TT TTTT TTT TTTTTTTT TT gh speed data service throu gh optical and coaxial cables
T T T TTTT TTTT T TTTT ( Termination System) installe
d at the Head End and the C M(Cable Modem) installed at
the end user
ByC a b l e B r o a d b a n d
The HFC network has a upstream fre quency of 5 MHz ~ 4 2 MHz and5
4MHz ~ 750MHz for downstream Th e upstream frequency is used for CA
TV signals and data services The fre quency range can be expanded up to
2GHz and about 80 of service prov iders has expanded to 750~870MHz
로 and about 70 can use the range of up to 750MHz
Frequency Use in HFC Network
ByC a b l e B r o a d b a n d
Configuration (In the Network)
CMTS
HE
ONU
CM CM CM
CM CM CM
- 100 330Max ~ km ( Mbits)
bull CMTS Cable Modem Terminati on System
bull CM Cable Modem CM can only talk to CMTS while CMTS can talk(broadcast) to any(all)
Solution 1
ByC a b l e B r o a d b a n d
-CMTS in the head end Cable Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
- -encoding QPSK16 QAM- - total BW 5 42 [65] Mhz- single slot BW 02ndash64MHz- single slot data rate
1 0 3 0 in ver1 x ver 20 Mbps
- -64encoding QA-256M QAM
- total BW 42 [65]-86 T TT0
- 6single slot BW [ 8 ]- single slot data r
ate 30ndash40 Mbps
ByC a b l e B r o a d b a n d
Configuration (In the Network)
Switch
HE
Master
CDM CDM CDM
CDM CDM CDM
Max ~2 km (100 Mbits)
bull ONU Optical Network Unit (Master)
bull CD M Cable Data Modem
Solution 2 (LS HFC)
ONU
Switch is an optical switch TTTTT T TTT T TTTT TT TTTTTTTTT T TTT TTTTT T TTTT
The cable modem works with STBpartially
ByC a b l e B r o a d b a n d
Master in ONU Cable Data Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
-encoding OFDM256 QAT- - total BW 2 34 [32] Mhz- No limit for uploading fo r UCC VoIP
ByC a b l e B r o a d b a n d
Modulation CDM are based on TT TTTTTTTTT TTTTTTTT(
T TTTTTTT T TTTTTTTTTTTT) modulation This is alre ady used in xDSL WLAN and PLC to name a few
This type of modulation enables the HFC netwTTT TT TTTTTTTT TTT TTTTTTTT TTTTTTT TTTTTTTTTTT
e noise and time delay on a coaxial network Some strong points of OFDM is as the following
1048766 - It is efficient in multi path fading channels with l arge time spreads
1048766 The data rate per subscriber is adaptable (accor ding to the SNR detected at this subcarrier)
1048766 Interferences (and impulsive noise) only affect s ome carriers while the remaining carriers ensure r
eliable communication
ByC a b l e B r o a d b a n d 50Coaxial network Attenuation is less than dB for better performance
Link Budget
ByC a b l e B r o a d b a n d
LS HFC Equipment
L2 Switch
Outdoor Master
Indoor Master
CPE Modem
Indoor Diplexer
Indoor Spliter Diplexer
Outdoor Diplexer
ByC a b l e B r o a d b a n d
Example Network 1Ethernet On Cable Outdoor
ByC a b l e B r o a d b a n d
Ethernet On Cable IndoorExample Network 2
THANK YOU
ByC a b l e B r o a d b a n d
ByC a b l e B r o a d b a n d
The HFC network has a upstream fre quency of 5 MHz ~ 4 2 MHz and5
4MHz ~ 750MHz for downstream Th e upstream frequency is used for CA
TV signals and data services The fre quency range can be expanded up to
2GHz and about 80 of service prov iders has expanded to 750~870MHz
로 and about 70 can use the range of up to 750MHz
Frequency Use in HFC Network
ByC a b l e B r o a d b a n d
Configuration (In the Network)
CMTS
HE
ONU
CM CM CM
CM CM CM
- 100 330Max ~ km ( Mbits)
bull CMTS Cable Modem Terminati on System
bull CM Cable Modem CM can only talk to CMTS while CMTS can talk(broadcast) to any(all)
Solution 1
ByC a b l e B r o a d b a n d
-CMTS in the head end Cable Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
- -encoding QPSK16 QAM- - total BW 5 42 [65] Mhz- single slot BW 02ndash64MHz- single slot data rate
1 0 3 0 in ver1 x ver 20 Mbps
- -64encoding QA-256M QAM
- total BW 42 [65]-86 T TT0
- 6single slot BW [ 8 ]- single slot data r
ate 30ndash40 Mbps
ByC a b l e B r o a d b a n d
Configuration (In the Network)
Switch
HE
Master
CDM CDM CDM
CDM CDM CDM
Max ~2 km (100 Mbits)
bull ONU Optical Network Unit (Master)
bull CD M Cable Data Modem
Solution 2 (LS HFC)
ONU
Switch is an optical switch TTTTT T TTT T TTTT TT TTTTTTTTT T TTT TTTTT T TTTT
The cable modem works with STBpartially
ByC a b l e B r o a d b a n d
Master in ONU Cable Data Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
-encoding OFDM256 QAT- - total BW 2 34 [32] Mhz- No limit for uploading fo r UCC VoIP
ByC a b l e B r o a d b a n d
Modulation CDM are based on TT TTTTTTTTT TTTTTTTT(
T TTTTTTT T TTTTTTTTTTTT) modulation This is alre ady used in xDSL WLAN and PLC to name a few
This type of modulation enables the HFC netwTTT TT TTTTTTTT TTT TTTTTTTT TTTTTTT TTTTTTTTTTT
e noise and time delay on a coaxial network Some strong points of OFDM is as the following
1048766 - It is efficient in multi path fading channels with l arge time spreads
1048766 The data rate per subscriber is adaptable (accor ding to the SNR detected at this subcarrier)
1048766 Interferences (and impulsive noise) only affect s ome carriers while the remaining carriers ensure r
eliable communication
ByC a b l e B r o a d b a n d 50Coaxial network Attenuation is less than dB for better performance
Link Budget
ByC a b l e B r o a d b a n d
LS HFC Equipment
L2 Switch
Outdoor Master
Indoor Master
CPE Modem
Indoor Diplexer
Indoor Spliter Diplexer
Outdoor Diplexer
ByC a b l e B r o a d b a n d
Example Network 1Ethernet On Cable Outdoor
ByC a b l e B r o a d b a n d
Ethernet On Cable IndoorExample Network 2
THANK YOU
ByC a b l e B r o a d b a n d
ByC a b l e B r o a d b a n d
Configuration (In the Network)
CMTS
HE
ONU
CM CM CM
CM CM CM
- 100 330Max ~ km ( Mbits)
bull CMTS Cable Modem Terminati on System
bull CM Cable Modem CM can only talk to CMTS while CMTS can talk(broadcast) to any(all)
Solution 1
ByC a b l e B r o a d b a n d
-CMTS in the head end Cable Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
- -encoding QPSK16 QAM- - total BW 5 42 [65] Mhz- single slot BW 02ndash64MHz- single slot data rate
1 0 3 0 in ver1 x ver 20 Mbps
- -64encoding QA-256M QAM
- total BW 42 [65]-86 T TT0
- 6single slot BW [ 8 ]- single slot data r
ate 30ndash40 Mbps
ByC a b l e B r o a d b a n d
Configuration (In the Network)
Switch
HE
Master
CDM CDM CDM
CDM CDM CDM
Max ~2 km (100 Mbits)
bull ONU Optical Network Unit (Master)
bull CD M Cable Data Modem
Solution 2 (LS HFC)
ONU
Switch is an optical switch TTTTT T TTT T TTTT TT TTTTTTTTT T TTT TTTTT T TTTT
The cable modem works with STBpartially
ByC a b l e B r o a d b a n d
Master in ONU Cable Data Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
-encoding OFDM256 QAT- - total BW 2 34 [32] Mhz- No limit for uploading fo r UCC VoIP
ByC a b l e B r o a d b a n d
Modulation CDM are based on TT TTTTTTTTT TTTTTTTT(
T TTTTTTT T TTTTTTTTTTTT) modulation This is alre ady used in xDSL WLAN and PLC to name a few
This type of modulation enables the HFC netwTTT TT TTTTTTTT TTT TTTTTTTT TTTTTTT TTTTTTTTTTT
e noise and time delay on a coaxial network Some strong points of OFDM is as the following
1048766 - It is efficient in multi path fading channels with l arge time spreads
1048766 The data rate per subscriber is adaptable (accor ding to the SNR detected at this subcarrier)
1048766 Interferences (and impulsive noise) only affect s ome carriers while the remaining carriers ensure r
eliable communication
ByC a b l e B r o a d b a n d 50Coaxial network Attenuation is less than dB for better performance
Link Budget
ByC a b l e B r o a d b a n d
LS HFC Equipment
L2 Switch
Outdoor Master
Indoor Master
CPE Modem
Indoor Diplexer
Indoor Spliter Diplexer
Outdoor Diplexer
ByC a b l e B r o a d b a n d
Example Network 1Ethernet On Cable Outdoor
ByC a b l e B r o a d b a n d
Ethernet On Cable IndoorExample Network 2
THANK YOU
ByC a b l e B r o a d b a n d
ByC a b l e B r o a d b a n d
-CMTS in the head end Cable Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
- -encoding QPSK16 QAM- - total BW 5 42 [65] Mhz- single slot BW 02ndash64MHz- single slot data rate
1 0 3 0 in ver1 x ver 20 Mbps
- -64encoding QA-256M QAM
- total BW 42 [65]-86 T TT0
- 6single slot BW [ 8 ]- single slot data r
ate 30ndash40 Mbps
ByC a b l e B r o a d b a n d
Configuration (In the Network)
Switch
HE
Master
CDM CDM CDM
CDM CDM CDM
Max ~2 km (100 Mbits)
bull ONU Optical Network Unit (Master)
bull CD M Cable Data Modem
Solution 2 (LS HFC)
ONU
Switch is an optical switch TTTTT T TTT T TTTT TT TTTTTTTTT T TTT TTTTT T TTTT
The cable modem works with STBpartially
ByC a b l e B r o a d b a n d
Master in ONU Cable Data Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
-encoding OFDM256 QAT- - total BW 2 34 [32] Mhz- No limit for uploading fo r UCC VoIP
ByC a b l e B r o a d b a n d
Modulation CDM are based on TT TTTTTTTTT TTTTTTTT(
T TTTTTTT T TTTTTTTTTTTT) modulation This is alre ady used in xDSL WLAN and PLC to name a few
This type of modulation enables the HFC netwTTT TT TTTTTTTT TTT TTTTTTTT TTTTTTT TTTTTTTTTTT
e noise and time delay on a coaxial network Some strong points of OFDM is as the following
1048766 - It is efficient in multi path fading channels with l arge time spreads
1048766 The data rate per subscriber is adaptable (accor ding to the SNR detected at this subcarrier)
1048766 Interferences (and impulsive noise) only affect s ome carriers while the remaining carriers ensure r
eliable communication
ByC a b l e B r o a d b a n d 50Coaxial network Attenuation is less than dB for better performance
Link Budget
ByC a b l e B r o a d b a n d
LS HFC Equipment
L2 Switch
Outdoor Master
Indoor Master
CPE Modem
Indoor Diplexer
Indoor Spliter Diplexer
Outdoor Diplexer
ByC a b l e B r o a d b a n d
Example Network 1Ethernet On Cable Outdoor
ByC a b l e B r o a d b a n d
Ethernet On Cable IndoorExample Network 2
THANK YOU
ByC a b l e B r o a d b a n d
ByC a b l e B r o a d b a n d
Configuration (In the Network)
Switch
HE
Master
CDM CDM CDM
CDM CDM CDM
Max ~2 km (100 Mbits)
bull ONU Optical Network Unit (Master)
bull CD M Cable Data Modem
Solution 2 (LS HFC)
ONU
Switch is an optical switch TTTTT T TTT T TTTT TT TTTTTTTTT T TTT TTTTT T TTTT
The cable modem works with STBpartially
ByC a b l e B r o a d b a n d
Master in ONU Cable Data Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
-encoding OFDM256 QAT- - total BW 2 34 [32] Mhz- No limit for uploading fo r UCC VoIP
ByC a b l e B r o a d b a n d
Modulation CDM are based on TT TTTTTTTTT TTTTTTTT(
T TTTTTTT T TTTTTTTTTTTT) modulation This is alre ady used in xDSL WLAN and PLC to name a few
This type of modulation enables the HFC netwTTT TT TTTTTTTT TTT TTTTTTTT TTTTTTT TTTTTTTTTTT
e noise and time delay on a coaxial network Some strong points of OFDM is as the following
1048766 - It is efficient in multi path fading channels with l arge time spreads
1048766 The data rate per subscriber is adaptable (accor ding to the SNR detected at this subcarrier)
1048766 Interferences (and impulsive noise) only affect s ome carriers while the remaining carriers ensure r
eliable communication
ByC a b l e B r o a d b a n d 50Coaxial network Attenuation is less than dB for better performance
Link Budget
ByC a b l e B r o a d b a n d
LS HFC Equipment
L2 Switch
Outdoor Master
Indoor Master
CPE Modem
Indoor Diplexer
Indoor Spliter Diplexer
Outdoor Diplexer
ByC a b l e B r o a d b a n d
Example Network 1Ethernet On Cable Outdoor
ByC a b l e B r o a d b a n d
Ethernet On Cable IndoorExample Network 2
THANK YOU
ByC a b l e B r o a d b a n d
ByC a b l e B r o a d b a n d
Master in ONU Cable Data Modem in the house
Modulator
Demodulator+
Modulator
Demodulator+
upstream
downstream
-encoding OFDM256 QAT- - total BW 2 34 [32] Mhz- No limit for uploading fo r UCC VoIP
ByC a b l e B r o a d b a n d
Modulation CDM are based on TT TTTTTTTTT TTTTTTTT(
T TTTTTTT T TTTTTTTTTTTT) modulation This is alre ady used in xDSL WLAN and PLC to name a few
This type of modulation enables the HFC netwTTT TT TTTTTTTT TTT TTTTTTTT TTTTTTT TTTTTTTTTTT
e noise and time delay on a coaxial network Some strong points of OFDM is as the following
1048766 - It is efficient in multi path fading channels with l arge time spreads
1048766 The data rate per subscriber is adaptable (accor ding to the SNR detected at this subcarrier)
1048766 Interferences (and impulsive noise) only affect s ome carriers while the remaining carriers ensure r
eliable communication
ByC a b l e B r o a d b a n d 50Coaxial network Attenuation is less than dB for better performance
Link Budget
ByC a b l e B r o a d b a n d
LS HFC Equipment
L2 Switch
Outdoor Master
Indoor Master
CPE Modem
Indoor Diplexer
Indoor Spliter Diplexer
Outdoor Diplexer
ByC a b l e B r o a d b a n d
Example Network 1Ethernet On Cable Outdoor
ByC a b l e B r o a d b a n d
Ethernet On Cable IndoorExample Network 2
THANK YOU
ByC a b l e B r o a d b a n d
ByC a b l e B r o a d b a n d
Modulation CDM are based on TT TTTTTTTTT TTTTTTTT(
T TTTTTTT T TTTTTTTTTTTT) modulation This is alre ady used in xDSL WLAN and PLC to name a few
This type of modulation enables the HFC netwTTT TT TTTTTTTT TTT TTTTTTTT TTTTTTT TTTTTTTTTTT
e noise and time delay on a coaxial network Some strong points of OFDM is as the following
1048766 - It is efficient in multi path fading channels with l arge time spreads
1048766 The data rate per subscriber is adaptable (accor ding to the SNR detected at this subcarrier)
1048766 Interferences (and impulsive noise) only affect s ome carriers while the remaining carriers ensure r
eliable communication
ByC a b l e B r o a d b a n d 50Coaxial network Attenuation is less than dB for better performance
Link Budget
ByC a b l e B r o a d b a n d
LS HFC Equipment
L2 Switch
Outdoor Master
Indoor Master
CPE Modem
Indoor Diplexer
Indoor Spliter Diplexer
Outdoor Diplexer
ByC a b l e B r o a d b a n d
Example Network 1Ethernet On Cable Outdoor
ByC a b l e B r o a d b a n d
Ethernet On Cable IndoorExample Network 2
THANK YOU
ByC a b l e B r o a d b a n d
ByC a b l e B r o a d b a n d 50Coaxial network Attenuation is less than dB for better performance
Link Budget
ByC a b l e B r o a d b a n d
LS HFC Equipment
L2 Switch
Outdoor Master
Indoor Master
CPE Modem
Indoor Diplexer
Indoor Spliter Diplexer
Outdoor Diplexer
ByC a b l e B r o a d b a n d
Example Network 1Ethernet On Cable Outdoor
ByC a b l e B r o a d b a n d
Ethernet On Cable IndoorExample Network 2
THANK YOU
ByC a b l e B r o a d b a n d
ByC a b l e B r o a d b a n d
LS HFC Equipment
L2 Switch
Outdoor Master
Indoor Master
CPE Modem
Indoor Diplexer
Indoor Spliter Diplexer
Outdoor Diplexer
ByC a b l e B r o a d b a n d
Example Network 1Ethernet On Cable Outdoor
ByC a b l e B r o a d b a n d
Ethernet On Cable IndoorExample Network 2
THANK YOU
ByC a b l e B r o a d b a n d
ByC a b l e B r o a d b a n d
Example Network 1Ethernet On Cable Outdoor
ByC a b l e B r o a d b a n d
Ethernet On Cable IndoorExample Network 2
THANK YOU
ByC a b l e B r o a d b a n d
ByC a b l e B r o a d b a n d
Ethernet On Cable IndoorExample Network 2
THANK YOU
ByC a b l e B r o a d b a n d
THANK YOU
ByC a b l e B r o a d b a n d
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