Hi Experts, I have some difficult in understanding the AMI BIRD. 1) Most equalization of RX and TX is non-adaptive. Chip vendors don't have any adaptation codes to embed into DLL function and the DLL function won't have the ability to calculate the optimal equalization coefficients. Then who will be in charge of calculating the optimal equalization coefficients, users or simulators? Is it possible for simulator to do this kind of work? 2)If the channel is LTS, all simulation will be done by impulse response mode. How to consider the jitter effects, especially DCD. According to PNA(Phase Noise Amplifier) and experiment, DCD will be amplified by the low-pass channel. Direct statistical processing without DCD amplification won't be accurate. The problem may do not belong to AMI category and maybe I missed something here. I hope some experts could help clarify it. Thanks in advance. Regards, Huang Huawei Technologies Co.,Ltd. Tel: 86 755 28976229 FAX: 86 755 28976758 Email: huangchunxing@xxxxxxxxxx Web: http://www.huawei.com Warning: The information contained in electronic mail message is intended only for the personal and confidential use of the designated recipient(s) named above. It may be privileged and confidential. If you have received this communication in error, please destroy any and all copies of this message including attached files in your possession. --------------------------------------------------------------------- IBIS Macro website : http://www.eda.org/pub/ibis/macromodel_wip/ IBIS Macro reflector: //www.freelists.org/list/ibis-macro To unsubscribe send an email: To: ibis-macro-request@xxxxxxxxxxxxx Subject: unsubscribe