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Hi all.
This is Panyuh Joo from Samsung Electronics
KOREA.
I have some technically open question to ask all of you who may be
interested in.
Please any one expert in Physical layer make creative
comments on this email.
I have sumbitted frequency diversity (of
Space Time code) related issue in last Nov.2001 Texas Austin
and Jan.2002 levi
meeting.
I that duration cause there are some problem of lack of time
for presentation my work.
Also maybe our work related to STC is not an
issue of BWA.
But samsung have shown there is some performance gain When
we use frequency diversity in OFDM STC.
But most of PHY layer guys in
802.16 do not agree on this scheme.
This is my understanding regarding to
Frequency diversity issue of Samsung in 802.16.
The difficulties
are.
1. frequency diversity
effects may be reduced by coding and/or interleaving gain.
2. simulation
results are not using SUI channel
but regarding to 2nd question. I have a
resonable answer in Jan Levi meeting.
There is no performance difference
in SUI channel model and generalized fading channel model.
The only
problem still pending is 1st one : the coding/interleaving/freq.diversity gain
related issue.
Do anybody expertized on PHY layer of
802.16 have concern on this issue please make your comment on this
email.
I hope there is an chance to make frequency diversity on STC-OFDM as an discussion item in this May meeting in Calgary.
Wish you can enforce me to figure out further problem of questions regarding to Samsung's Issues(may not limited to Freq. diversity in STC-OFDM) on BWA solution.
Thansks for listening..
Take care.
Best Regards
Panyuh Joo