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RE: [10GBASE-T] question about the complexity reduction of MIMO


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.


-----Original Message-----
From: []
Sent: Monday, January 20, 2003 10:24 AM
To: William Jones
Subject: [10GBASE-T] question about the complexity reduction of MIMO


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.