[ibis-macro] Re: Adaptive Equalization in Statistical Simulations

  • From: <fangyi_rao@xxxxxxxxxxx>
  • To: <gedlund@xxxxxxxxxx>, <ibis-macro@xxxxxxxxxxxxx>
  • Date: Tue, 25 Mar 2014 18:17:21 +0000

Hi, Greg;

In statistical simulation, adaptation is modeled by AMI_Init, which adjusts 
equalizer according to the channel characteristics and modifies the impulse 
response. It's similar to what you did with transient, except that in tan the 
EQ is adjusted based on the input signal waveform, but in AMI_Init EQ is 
adjusted based the input impulse.

Regards,
Fangyi

From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx] 
On Behalf Of Gregory R Edlund
Sent: Tuesday, March 25, 2014 11:09 AM
To: IBIS-ATM
Subject: [ibis-macro] Adaptive Equalization in Statistical Simulations


It is my understanding that adaptive equalization is not possible in AMI 
statistical simulations.  To model adaptive equalization, I need to first run a 
short transient simulation, load the RX tap settings from that simulation into 
the model-specific parameters, and then run a statistical simulation.

Question:  what is it about modifying the impulse response that prevents RX 
adaptive equalization in statistical simulations?

Thanks in advance for your time.


Greg Edlund
Senior Engineer
Signal Integrity and System Timing
IBM Systems & Technology Group
3605 Hwy. 52 N  Bldg 050-3
Rochester, MN 55901

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