Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Clarification for MIMO ....

Status
Not open for further replies.

vkekk

Full Member level 3
Joined
Mar 30, 2007
Messages
159
Helped
5
Reputation
10
Reaction score
4
Trophy points
1,298
Activity points
2,211
1. Wheather BLAST(Bell Layered Space Time) is a general system or not for MIMO system.

2. If BLAST is a general system , then what is difference between general system and BLAST system in terms of performances in MIMO.

3. What is the relationship between no of transmitting and no of receiver antennas for different categories of MIMO system.

anybody help on these.... urgent for now

Thanks in advance
 

m_llaa

Full Member level 4
Joined
Mar 12, 2006
Messages
231
Helped
44
Reputation
88
Reaction score
21
Trophy points
1,298
Location
My Love Iran
Activity points
2,558
Hi
Your question is not clear for me, but I have some comments.
BLAST is a type of space time codes that uses in MIMO systems.
 

mro83

Member level 5
Joined
Oct 6, 2004
Messages
86
Helped
11
Reputation
22
Reaction score
4
Trophy points
1,288
Location
Mashad
Activity points
758
Consider a flat-fading MIMO channel,
V-BLAST is an algorithm to extract the data transmitted by each Tx antenna from the received antenna branches.

So As I know it is an algorithm developed and used in MIMO systems.

[3]: how do you categorize different MIMO systems?
 

vkekk

Full Member level 3
Joined
Mar 30, 2007
Messages
159
Helped
5
Reputation
10
Reaction score
4
Trophy points
1,298
Activity points
2,211
In some papers, they mentioned BLAST System used for High data rate applications....
In some book, VBLAST is a architecture breaks the orginal data into M substreams that are transmitted on individual antennas. that substream are uncoded version.


Do you have any materials to support BLAST is a algorithm for MIMO System..
 

mro83

Member level 5
Joined
Oct 6, 2004
Messages
86
Helped
11
Reputation
22
Reaction score
4
Trophy points
1,288
Location
Mashad
Activity points
758
I cannot give accurate comment based on your readings (cited above).
But generally, MIMO systems are used to increase data rate ( specifically in High data rate applications.... ). Moreover, I think the second citation is the way VBLAST works.
 

m_llaa

Full Member level 4
Joined
Mar 12, 2006
Messages
231
Helped
44
Reputation
88
Reaction score
21
Trophy points
1,298
Location
My Love Iran
Activity points
2,558
Hi
Space time coding is the coding type that is used in MIMO system with M antenna in transmitter and N antenna in receiver.
Space time coding have 2 basic category. Just in one of them the target is increasing the data rate. In this category a very famous coding is V-BLAST.
Therefore I think the (V-)BLAST is not system or algorithm. It is a type of coding in MIMO systems.
For more information I suggest you a very good book by Jafarkhani. Its name is Space-Time Coding, Theory and Practice.
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top