802.11b PHY MATLAB Code

802.11b PHY MATLAB® Code.

Description

BER simulation of DBPSK, 1Mbps mode of 802.11b. Assumes perfect synchronization. Should work in earlier releases.

• Required Products: Communications System Toolbox; Signal Processing Toolbox
• MATLAB release: MATLAB 6.5 (R13)

[ra dsd]

 

[Sri Vishu]

Very good program with great explanation

[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

[rose pamella]

I don t understand parameters for firrcos
Fc and Fs?

[sathish kumar narayanasamy]

 

[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

[Himanshu Ray]

Were can I get the theoretical part and formulation of this code.

[amrit pandey]

 

[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.

[y s]

 

[Leszek Nawalaniec]

Great job !

[Giacomo Belluchi]

ok

[Bondero Bacoma]

interesting...

[McGyver 2]

 

[Yang Cheung]

Something's wrong, but i don't know why...

[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

[ajit sahoo]

 

[Shine Soman]

Very usefull

[andrea baron]

is is very interesting, thanks for you kelp

[kittu bunedu]

great help from you

[shahzad bhatti]

very++ useful

[hamzi chahro]

quelle est la taille d'une trame 802.11b à 1Mbps?

[Aneeq Ahmed]

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

[shweta tripathi]