RE: [10GBASE-T] question about the complexity reduction of MIMO
Bill,
I believe the complexity of a practical realization is important to the
group as we look at the feasibility of 10 gigabits/second over Cat-5 and
the role that different line codes play.
I am curious as to what complexity measure you are using when discussing
the 16x reduction using MIMO. Is it power dissipation for a given
technology? Multiplies per second? Gate count?
Thanks,
...PJ
On Mon, 2003-01-20 at 13:44, William Jones wrote:
> Xiaopeng
>
> I would claim the maximum is a 16x reduction. So, a practical realization is in the range 4x to 16x. Our approach is somewhere around 7x. Note, a MIMO realization is not unique. But, this is not a concern for the study group.
>
> Bill
>
> -----Original Message-----
> From: xichen@marvell.com [mailto:xichen@marvell.com]
> Sent: Monday, January 20, 2003 10:24 AM
> To: William Jones
> Cc: stds-802-3-10gbt@ieee.org
> Subject: [10GBASE-T] question about the complexity reduction of MIMO
>
>
>
> Bill,
>
> I have a quick question about MIMO. In your presentation, you stated that
> the MIMO architecture can help to reduce the DSP complexity from 10 to 1.5.
>
> For a 4x4 MIMO system, the maximum complexity reduction is 4 times if I am
> not wrong. In this extreme case, a one-channel DSP engine can be reused
> for 4 channels without any modification. However even in such a case, the
> DSP complexity is still 2.5.
>
> Xiaopeng
>
>
--
P.J. Sallaway <pj@myricanetworks.com>
Myrica Networks Inc.