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Re: [10GBASE-T] matlab ad hoc


The lack of ANEXT specifications is still a big concern to me.  As we saw,
the dominant residual noise at the receiver will be ANEXT.  Therefore its
strength will directly determine the system performance.
I saw there was a presentation about the ANEXT model for cat5/5e/6 on
November's meeting
<>.  Is this a
ANEXT model that is gonna be standardized or not?


"Chris DiMinico" <> on 01/17/2003
09:00:08 AM

Sent by:

To:    "Chris DiMinico" <>, "William Jones"
       <>, <>

Subject:    Re: [10GBASE-T] matlab ad hoc


Please find the ISO 11801 channel specifications attached for:

1. Return Loss
2. Insertion Loss
3. Pair-to-Pair NEXT
4. Power Sum NEXT
5. Pair-to-Pair ELFEXT
5. Power Sum ELFEXT



----- Original Message -----
From: "Chris DiMinico" <>
To: "William Jones" <>; <>
Sent: Thursday, January 16, 2003 1:17 PM
Subject: Re: [10GBASE-T] matlab ad hoc

> Bill,
> I'll provide the cabling standard channel specifications before close of
> business.
> Regards,
> Chris
> ----- Original Message -----
> From: "William Jones" <>
> To: <>
> Sent: Thursday, January 16, 2003 1:07 PM
> Subject: [10GBASE-T] matlab ad hoc
> Participants
> To get this kicked off, I suggest developing some code to compute the
> optimal DFE SNR.  I would like to see several participants independently
> develop some code.  For the purposes of testing the code only, we need to
> agree upon a transmit PSD, transformer, channel and noise models.   I do
> want to use DSL models. I suggest something from TIA 568b or ISO 11801.
> am open to specific proposals.  For the transformer, I suggest a simple
> first order high pass filter with low frequency 3dB point in the range of
> to 15 MHz.  For the simulation results I have present, I used 12.5 MHz.
> initial testing purposes, I suggest a PAM10 PSD with 10dBm power.
> I am sending this to the reflector.  But, since several people are having
> problems getting to the reflector, I am thinking to carry on the ad hoc
> direct distribution to interested participants.  Let me know if this
> a problem for anyone.  So, I will be sending a separate email directly to
> those participants that have contacted me either by email or business
> by the end of business today (1/16/03).  If you do not receive a second
> email and are interested in participating, kindly send me an email.
> Also, I have just received the 1000BASE-T code from Chris which I will be
> distributing.
> Regards
> Bill
> William W. Jones, Ph.D.
> Director of Systems Engineering
> SolarFlare Communications, Inc.
> 949-581-6830, ext. 2550
> mobile: 619-405-2445
> fax: 949-581-4695

(See attached file: ISO 11801 Channel-Class D and Class E.xls)

ISO 11801 Channel-Class D and Class E.xls