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 Dear all,  
so far, 10 people registered for 
participation in the 10GEPON channel model ad-hoc. Here is the complete 
list: 
1. Marek Hajduczenia (chair), Siemens 
Networks S.A. (marek.hajduczenia AT siemens.com) 
2. Glen Kramer, Teknovus Inc. (glen.kramer AT teknovus.com) 3. Frank Effenberger, Hauwei (feffenberger AT huawei.com) 4. Sergey Y. Ten, Corning, (TenS AT Corning.com) 5. Keiji Tanaka, KDDI Labs, (kj-tanaka AT kddilabs.jp) 6. Eric Lynskey, Teknovus Inc., (eric.lynskey AT teknovus.com) 7. Paul Kolesar, CommScope Enterprise® Solutions, (PKOLESAR AT systimax.com) 8. Tsutomu Tatsuta, NTT, (tatsuta AT ansl.ntt.co.jp) 9. Robert Lingle, OFS Optics, (rlingle AT ofsoptics.com) 10. Dawe Piers, AvagoTech, (piers.dawe AT avagotech.com) I would like to first thank everybody for 
their will to participate. Let's hope that this ad-hoc is as successful as the 
last one.  
Regarding the tasks related with this 
particular ad-hoc, I would like to suggest some of them. Please feel free to 
provide any comments / feedback / suggestions. 
Task 1: Channel model 
definitions: 
    - conformance between 
802.3 definitions and channel model spreadsheet 
    - establish definitions 
for loss budget, channel insertion loss, power budget margin and its individual 
components 
Task 2: Identification of necessary channel 
model extensions to be included in the new spreadsheet 
    - non-linear transmission 
channel impairments (e.g. SBS?) 
    - RF video overlay 
(?) 
    - realistic PSC loss 
modelling 
    - any other 
? 
Task 3: Overhaul of the Excel spreadsheet 
and update to meet requirements of the 10GEPON  
    - separation of the 
parameter sheet and results sheet to increase readability ... 
    - add missing channel 
impairment parameters (e.g. SBS threshold) 
    - add RF channel 
modelling and include all related transmission impairments (+ 
penalties) 
    - add PSC component 
modelling as well as include PSC loss in the channel model 
    - any other which are 
identified by the ad-hoc 
Task 4: Model compatibility 
issues 
    - is Excel spreadsheet 
sufficient to model all the effects in 10GEPON system? 
    - what are other options 
for publicly available software which could do the job better? 
    - do we need to improve 
the modelling precision to remove 1-2 dB overshoot which was signalled in the 
case of 10GE links ? 
    - any other compatibility 
issues ? 
I would 
appreciate if the participants could identify the tasks which are of their 
primary interest. Feel free to email me with any suggestions regarding changes, 
wording, addition of tasks etc.  
If 
possible, I would also like to start the discussion on the defintions of 
individual channel parameters, since it was suggested that we ought to clarify 
finally concepts like channel insertion loss and whether power budget margins 
should be internally divided into channel insertion loss margins and other 
components related with Rx/Tx equipment. I would like to suggest discussion 
based on the presentation from Tanaka-san, available at: http://grouper.ieee.org/groups/802/3/av/public/2006_11/3av_0611_tanaka_1.pdf 
I am looking forward to hear Your opinions 
on this topic.  
Best wishes 
Marek 
Hajduczenia (141238) 
SIEMENS Networks S.A. - IC COM D1 R Rua Irmãos Siemens, 1 Ed. 1, Piso 1 Alfragide 2720-093 Amadora Portugal * Marek.Hajduczenia@siemens.com http://marekhaj.easyisp.pl/index.php (+351.21.416.7472 4+351.21.424.2082   
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