Sir
Without the algorithm, it is somewhat complex for me as a student to understand from the code though I have some idea on DSSS concept.
Please kindly update its algorithm so that I can understand.
Thank you in advance.
One query and correct me if i am wrong, You have written:
SNR=EsNo+10*log10(1/SpreadingRate)+... ;
NOw spreadspectrum systems give You a gain in performance which is equal to spreading rate. Hence When You send a bit on the channel, it has its own energy per bit plus this performance gain.
Thus, shouldnt the formula be:
SNR=EsNo+10*log10(SpreadingRate)+...;
or equivalently
SNR=EsNo-10*log10(1/SpreadingRate)+...;
So can some one sort out the confusion
Comment only
02 Jun 2008
hamzi chahro
quelle est la taille d'une trame 802.11b à 1Mbps?
Comment only
19 Nov 2007
shahzad bhatti
very++ useful
09 Jul 2007
kittu bunedu
great help from you
08 Mar 2007
andrea baron
is is very interesting, thanks for you kelp
30 Aug 2006
Shine Soman
Very usefull
01 Jun 2006
ajit sahoo
28 Dec 2005
Kelvin Chee
Nice job, but there is no synchronization, reshape function can be patched like this
Tx_chips_tmp = Barker*Tx_symbols';
Tx_chips=reshape(Tx_chips_tmp,prod(size(Tx_chips_tmp)),1); % Multiply by barker and reshape to a columm
16 Oct 2005
Yang Cheung
Something's wrong, but i don't know why...
Comment only
09 Oct 2004
McGyver 2
09 Oct 2004
Bondero Bacoma
interesting...
09 Oct 2004
Giacomo Belluchi
ok
04 Oct 2004
Leszek Nawalaniec
Great job !
23 Sep 2004
y s
09 Jun 2004
jan mikulka
Hi, I think that there's a mistake in your code. When you count SNR from Es/No.
1) the first thing is, that you use EsNo, when there is no reason for it, because it is the same as EbNo in 2-state modulation. But it doesn't matter. Just in your case Es/No=Eb/No.
2) The formula like you write is for 11-state modulation.
You count Eb (Es) as energy above 1 chip!!!. It should be for countet as energy above one bit (symbol) - in your case it is the same.
Could you please write me, what do you think? Maybe I'm wrong, but I would like to know your opinion.
Comment only
20 May 2004
amrit pandey
13 Apr 2004
Himanshu Ray
Were can I get the theoretical part and formulation of this code.
22 Oct 2003
Karen Ong
Start Simulation
Simulating: EsNo=0dB
??? Error using ==> reshape
Size argument cannot be empty.
Error in ==> D:\Zip\DBPSK.m
On line 86 ==> Tx_chips=reshape(Barker*Tx_symbols',[],1); % Multiply by barker and reshape to a columm
31 Jul 2003
sathish kumar narayanasamy
01 Jul 2003
rose pamella
I don t understand parameters for firrcos
Fc and Fs?
26 Apr 2003
Taimour Al Neimat
Error using ==> reshape
Size argument cannot be empty.
On line 86 ==> Tx_chips=reshape(Barker*Tx_symbols',[],1); % Multiply by barker and reshape to a columm