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hello to All.
as part of my work i want to add AWGN in my matlab program .
it can be easily done by randn function.
like this
Noise = ( randn( 1,data ) + j * randn( 1,data) )
but my teacher told me once that multiply it also with
*10.^(SNRdb/20)
to normalize the Energy to 1 !
can any one...
i'm having problem while trying to solve following problem , please any one who can help me please do reply:
Refer the diagram. Each Arrow is a SDH trunk link. VC-4 received at destination SDH node F is fully loaded. VC-4 from Node C to E contains two TU-3. Now answer the following:
1. Type of...
Hello friend im very new in Electronic ckt designing so i need your extensive help .
i have been assign a task to "Design a derive circuitry for Photo-detector giving constant average power"
please anyone who can help me do reply here. i need some sort of Circuit diagram so that i can initiate...
i have some confusion regarding Viterbi decoder In matlab , if some one can guide me please do so.
decoded = vitdec(code,trellis,tblen,opmode,dectype)
im confused by the parameter in the above function that is opmode ,i want is to reset the shift register to Zero in the end but im not sure...
of course i made these program but thing is that im currently plotting Bit Error Rate against SNR.
I want to PLot Data rate Vs SNR.
Do you know any relationship Between BER and Data rate through which i can plot what i wan.
for sake of example, say at BER of 10^-3 data rate is 10kbps & so on
First off all define all the parameters used in the equation .
i took dummy parameter, like as
f=10;
t=15;
tavu=1;
If=j*sin(2*pi*f*t)^-(t/tavu)
if either t or tavu is vector you have to use . opperation before any opperation between vector.
fo eg
t./tavu
Im working on Analysis of Cooperative communication in wireless ntws.
i had made a matlab code in which i analysis BER performance (BER Vs SNR) of Co-Op Comm , since Co-Op Comm provide Increased data rate on less SNR as compare to Direct comm so i want to add Data rate VS SNR plot in my work ...
im working on 4G.Can anyone tell me Correctly that whether LTE-A Rel10 will be continue with SC-FDMA and OFDMA or there would be any new method will be introduce. i.e Hybrid of both
Good to see your reply
i have following Question
1)
i just simulate Amplify and forward protocol yet but i wonder to see my result ,the result get worst after relay rather getting better. And i found Beta (Amplifying Gain) making my result worst instead of improving . i m attaching the m file...
Im Working on "Cooperative Communication In 4G" as my Thesis .
i have some confusion which i want to clear out. if any one can help me thn Please Reply so that i can post my Questions.
Re: Relay Selection in Cooperative Communication with Interf
Im also Working on Cooperative Communication. but not on Relay Selection.
im just simulating Relaying Protocols i.e AF DF etc
if you have some material, advise regarding this topic do share with me
Ch 8 of the Book May Help you...
Re: How to Generate zero-mean complex Gaussian random variab
Simply by Using Mean command ,
mean(chan_sd)
e.g. -0.003 + i 0.0049
Added after 32 minutes:
i wan to implement following equation
Y_sr = P * H_sr * X + N_sr
subscript _sr shows signal From Source to Relay.
y = O/p Signal
P =...
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