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.

OFDM channel estimation for powerline.

Status
Not open for further replies.

ipmax

Newbie level 5
Joined
Nov 15, 2011
Messages
8
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,338
Hi all,

I am trying to implement channel estimation using LS estimators for poweline. However, my channel estimation is based on preambles. On the TX side, based on the standard I have preamble transmitted on 36 subcarriers (out of total 128 subcarriers). I have 8 such OFDM symbols which makes 1 preamble. So my tranmission format will be

1 Frame = (Preamble = 8 OFDM symbols) + (header = 10 OFDM symbols) + (data = 22 OFDM symbols)

Now my question is how can I estimate the SNR using the preamble? I know how the LS estimators work. But I need an idea of how it can be implemented using preamble as I described before.

Any suggestions will be appreciated.

Max
 

Mityan

Full Member level 5
Joined
Jul 11, 2012
Messages
281
Helped
48
Reputation
96
Reaction score
47
Trophy points
1,308
Activity points
2,835
I guess the level of the rest (128-36) subcarriers (during preamble) can give you the understanding of your channel noise.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top