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Re: [STDS-802-16] Regarding Band AMC--Mapping



Title: Message

How out BUSC (bin usage of subchannels) ? Having a vowel is nicemakes it easier to pronounce :-)

 

cheers,

Ran

-----Original Message-----
From: Peiying Zhu [mailto:pyzhu@NORTELNETWORKS.COM]
Sent: Wed 03 November 2004 18:31
To: STDS-802-16@listserv.ieee.org
Subject: Re: [STDS-802-16] Regarding Band AMC--Mapping

Hi, Panyuh:
 
The name "AMC subchannel" is quite confusing. "AMC" is usually referred as "Adaptive Modulation and Coding", which are exploited for all permutation schemes. Shall we change the name to something like "Sub-band sub-chanalization, i.e., SBSC", which is more consistent with PUSC, FUSC.
 
Regards,
 
Peiying
-----Original Message-----
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 3:15 AM
To: STDS-802-16@listserv.ieee.org
Subject: Re: [STDS-802-16] Regarding Band AMC--Mapping

Dear Hongmei Sun,

 

The reason of the following description exist is for easier understanding the concept to the band.

"AMC subchannel consists of 6 contiguous bins in a same band."

And because the statement does not restrict the use of 6 contiguous bins within one symbol, one may use 4 bin in first symbol and the other 2 bin in the second symbol. If someone uses the abbreviation on this structure as "4:2" structures of AMC subchannel. Then the possible alternate definition of the AMC subchannel could be 4:2 or 3:3 or 2:4 or 1:1:1:1:1:1. etc.

Maybe the word "contiguous" give some wrong sense of instincts. If just forget the nuance of the word "contiguous" as continuous in frequency domain, just read it as Contiguous bin in Band. Then we may bend the thoughts as well as the words.

And also please just do not confuse by the concept of the Band. It just gives you the concept of the AMC subchannelization. And it is not used for BAND AMC MAPPIING procedure by itself. The mapping of the data PDU is aligned only with definition of subchannel.

I still do not see any mis-description in the original statement in the specs.

And regarding to the DL PUSC, I think there are some mis-understanding when you read the spec., it would be appreciated if you can revisit the spec and read it carefully. I will do it too. If I found the same problems, I will comeback with the answer. But currently, I do not found any fault in the spec.

 

Hope this may help U.

Panyuh Joo

 


From: owner-stds-802-16@listserv.ieee.org [mailto:owner-stds-802-16@listserv.ieee.org] On Behalf Of Sun, Hongmei
Sent: Wednesday, November 03, 2004 4:07 PM
To: STDS-802-16@listserv.ieee.org
Subject: 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.
Panyuh Joo




--------

Panyuh Joo  Ph.D.

Global Standards & Research Team

Telecommunication R&D Center

Telecommunication Network

SAMSUNG ELECTRONICS CO., LTD

TEL: 82-31-279-5096

FAX: 82-31-279-5130

Mobile : 82-16-9530-5096

panyuh@samsung.com




------- 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



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