摘要 :
Important factors to be considered for developing a laboratory test for alien crosstalk are given. An analysis of the effect of the cable strand twist length on alien crossstalk is described. Test assembly configurations involving...
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Important factors to be considered for developing a laboratory test for alien crosstalk are given. An analysis of the effect of the cable strand twist length on alien crossstalk is described. Test assembly configurations involving seven cables or two cables are defined and measured results of alien crosstalk for 100m, 50m and 30m length test assemblies are given over the frequency band 1-500MHz. Preliminary results indicate little difference between 100m and 30m test assemblies. However, additional comparative study of the seven cable and two cable assemblies is recommended.
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摘要 :
Important factors to be considered for developing a laboratory test for alien crosstalk are given. An analysis of the effect of the cable strand twist length on alien crossstalk is described. Test assembly configurations involving...
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Important factors to be considered for developing a laboratory test for alien crosstalk are given. An analysis of the effect of the cable strand twist length on alien crossstalk is described. Test assembly configurations involving seven cables or two cables are defined and measured results of alien crosstalk for 100m, 50m and 30m length test assemblies are given over the frequency band 1-500MHz. Preliminary results indicate little difference between 100m and 30m test assemblies. However, additional comparative study of the seven cable and two cable assemblies is recommended.
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摘要 :
Important factors to be considered for developing a laboratory test for alien crosstalk are given. An analysis of the effect of the cable strand twist length on alien crossstalk is described. Test assembly configurations involving...
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Important factors to be considered for developing a laboratory test for alien crosstalk are given. An analysis of the effect of the cable strand twist length on alien crossstalk is described. Test assembly configurations involving seven cables or two cables are defined and measured results of alien crosstalk for 100m, 50m and 30m length test assemblies are given over the frequency band 1-500MHz. Preliminary results indicate little difference between 100m and 30m test assemblies. However, additional comparative study of the seven cable and two cable assemblies is recommended.
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摘要 :
Important factors to be considered for developing a laboratory test for alien crosstalk are given. An analysis of the effect of the cable strand twist length on alien crossstalk is described. Test assembly configurations involving...
展开
Important factors to be considered for developing a laboratory test for alien crosstalk are given. An analysis of the effect of the cable strand twist length on alien crossstalk is described. Test assembly configurations involving seven cables or two cables are defined and measured results of alien crosstalk for 100m, 50m and 30m length test assemblies are given over the frequency band l-500MHz. Preliminary results indicate little difference between 100m and 30m test assemblies. However, additional comparative study of the seven cable and two cable assemblies is recommended.
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We present an algorithm to reduce the power consumption of single-carrier data transmission over twisted-pair copper cables for future IEEE networking physical connectivity standard, 40GBASE-T. High-complexity coding schemes emplo...
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We present an algorithm to reduce the power consumption of single-carrier data transmission over twisted-pair copper cables for future IEEE networking physical connectivity standard, 40GBASE-T. High-complexity coding schemes employed for multi-gigabits transmission systems for higher reliability, e.g., system margin, is one of the major sources of power dissipation. The proposed method reduces the total power consumption by properly partitioning the channel into few sub-channels and using lower complexity coding schemes for the sub-channel with less insertion loss while the margin requirement is met over the entire channel.
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Almost 35 years ago, the concept of an Ethernet network was born and almost 25 years ago the DK (Digital-Intel-Xerox) specification led the march for an Ethernet standard. In the last 15 years, Ethernet has transitioned from a hal...
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Almost 35 years ago, the concept of an Ethernet network was born and almost 25 years ago the DK (Digital-Intel-Xerox) specification led the march for an Ethernet standard. In the last 15 years, Ethernet has transitioned from a half duplex protocol to a full duplex protocol and has increased its bandwidth capabilities by three orders of magnitude. This paper looks at what the future holds for Ethernet, and what is driving those developments.
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There has been much recent work in IEEE 802.3an, TIA TR42.7, and other standards groups to quantify channel capacity of unshielded twisted pair (UTP) media. While internal transmission impairments of UTP media such as Return Loss ...
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There has been much recent work in IEEE 802.3an, TIA TR42.7, and other standards groups to quantify channel capacity of unshielded twisted pair (UTP) media. While internal transmission impairments of UTP media such as Return Loss (RL), Near End CrossTalk (NEXT), and Far End CrossTalk (FEXT) are substantially cancelable with digital signal processing (DSP), alien crosstalk (PSANEXT and PSAELFEXT) remains a limiting factor for channel capacity. Many technical contributions have examined cable or connector alien crosstalk but few have quantified the channel alien crosstalk in installed cabling. This paper will present the results of alien crosstalk field testing in three installation sites. The sites utilize different vendor components for Category 6 rated solutions. Testing and analysis associated with this paper can support the standardization efforts in IEEE and TIA.
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摘要 :
There has been much recent work in IEEE 802.3an, TIA TR42.7, and other standards groups to quantify channel capacity of unshielded twisted pair (UTP) media. While internal transmission impairments of UTP media such as Return Loss ...
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There has been much recent work in IEEE 802.3an, TIA TR42.7, and other standards groups to quantify channel capacity of unshielded twisted pair (UTP) media. While internal transmission impairments of UTP media such as Return Loss (RL), Near End CrossTalk (NEXT), and Far End CrossTalk (FEXT) are substantially cancelable with digital signal processing (DSP), alien crosstalk (PSANEXT and PSAELFEXT) remains a limiting factor for channel capacity. Many technical contributions have examined cable or connector alien crosstalk but few have quantified the channel alien crosstalk in installed cabling. This paper will present the results of alien crosstalk field testing in three installation sites. The sites utilize different vendor components for Category 6 rated solutions. Testing and analysis associated with this paper can support the standardization efforts in IEEE and TIA.
收起
摘要 :
There has been much recent work in IEEE 802.3an, TIA TR42.7, and other standards groups to quantify channel capacity of unshielded twisted pair (UTP) media. While internal transmission impairments of UTP media such as Return Loss ...
展开
There has been much recent work in IEEE 802.3an, TIA TR42.7, and other standards groups to quantify channel capacity of unshielded twisted pair (UTP) media. While internal transmission impairments of UTP media such as Return Loss (RL), Near End CrossTalk (NEXT), and Far End CrossTalk (FEXT) are substantially cancelable with digital signal processing (DSP), alien crosstalk (PSANEXT and PSAELFEXT) remains a limiting factor for channel capacity. Many technical contributions have examined cable or connector alien crosstalk but few have quantified the channel alien crosstalk in installed cabling. This paper will present the results of alien crosstalk field testing in three installation sites. The sites utilize different vendor components for Category 6 rated solutions. Testing and analysis associated with this paper can support the standardization efforts in IEEE and TIA.
收起
摘要 :
There has been much recent work in IEEE 802.3an, TIA TR42.7, and other standards groups to quantify channel capacity of unshielded twisted pair (UTP) media. While internal transmission impairments of UTP media such as Return Loss ...
展开
There has been much recent work in IEEE 802.3an, TIA TR42.7, and other standards groups to quantify channel capacity of unshielded twisted pair (UTP) media. While internal transmission impairments of UTP media such as Return Loss (RL), Near End CrossTalk (NEXT), and Far End CrossTalk (FEXT) are substantially cancelable with digital signal processing (DSP), alien crosstalk (PSANEXT and PSAELFEXT) remains a limiting factor for channel capacity. Many technical contributions have examined cable or connector alien crosstalk but few have quantified the channel alien crosstalk in installed cabling. This paper will present the results of alien crosstalk field testing in three installation sites. The sites utilize different vendor components for Category 6 rated solutions. Testing and analysis associated with this paper can support the standardization efforts in IEEE and TIA.
收起
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