| Thread Links | Date Links | ||||
|---|---|---|---|---|---|
| Thread Prev | Thread Next | Thread Index | Date Prev | Date Next | Date Index |
Hi, Hongmei
I agree with you in that the current subchannel definition for AMC permutation is confusing.
Actually, 6 contiguous bins does not mean 6 bins x 1 symbol block.
It just means that 6 bins are contiguous in time axis or in frequency axis.
So, there can be various types of AMC subchannels, for example 1 bin x 6 symbols, 2 bins x 3 symbols,
3 bins x 2 symbols, etc..
Since a band consists of 4 bins and a subchannel shall be within one band, 6 bins x 1 symbol is impossible.
There is a corrigenda comment for description of AMC subchannel structure.
Please see the comment #244 of corrigenda comment file at the last Seoul meeting.
I hope it can help you.
Jeongheon Kim
#############################################
? ? ?
KIM, Jeong-Heon
Samsung Elec. Co., LTD.
System Lab. 2
e-mail : jeongheon.kim@samsung.com
office : 82-31-279-3791
h.p. : 82-16-9530-3791
#############################################
------- Original
Message -------
Sender : Sun,
Hongmei<hongmei.sun@INTEL.COM>
Date : 2004-11-03
16:07
Title : Re: [STDS-802-16] Regarding Band AMC--Mapping
|
Panyuh,
sorry, but I'm still confused about this even after your explanation. As you said, 4 Bins make one Band, and 6 Bins make one subchannel. So doesn't this hint that each AMC subchannel must exist across Band? (My understanding is: for each subchannel: 4 bins are from 1st Band, the other 2 bins are from 2nd Band. Of course, these 6 bins are contiguous.)
In addition,from my understanding, maybe PUSC DL permutation scheme is an exception case in aspect of subchannel size, where each subchannel has 24 tones but not 48 tones.
Pls feel free to revise me if my understanding is not right.
Hongmei SUN
CTL, Intel
From:
owner-stds-802-16@listserv.ieee.org
[mailto:owner-stds-802-16@listserv.ieee.org] On Behalf Of Panyuh
Joo
Sent: Wednesday, November 03, 2004 2:31 PM To: STDS-802-16@listserv.ieee.org Subject: Re: [STDS-802-16] Regarding Band AMC--Mapping Hi, Varma and All, Because one Band only got 4bins and 4 Bin only can make 32 data subcarriers + 4 pilot subcarriers. Any subchannel shoud have at least 48 tones(subcarriers), if we do not restrict the definition of AMC subchannel into one band. than any AMC subchannel can be exist accross the Band. So, the meaning of "AMC subchannel consists of 6 contiguous bins in a same band" ==> one AMC subchannel should be confined with in the same band. This definition would help the system exploits the Multi user diversity. I hope this explanation would help you.
------- Original Message ------- Sender : varma indukuri<varma.ivs@gmail.com> Date : 2004-11-03 14:46 Title : [STDS-802-16] Regarding Band AMC--Mapping Hi all, Section8.4.6.3(P80216-REVd_D5):: Optional permutations for AAS and AMC subchannels. A bin was defined as the set of adjacent 9 subcarriers with pilot in the middle as in Fig:238. But I couldn't understand the meaning of "A group of 4 rows of bins is called a band. AMC subchannel consists of 6 contiguous bins in a same band."????? Can any one help me in this regard. Regards varma ivs |