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25 Threads found on edaboard.com: Matlab Raised Cosine

Convolution Coding and Viterbi Decoding with Matlab: High BER with code rate of 5 / 8

Hey, I am building a model for a transceiver and I am struggling atm with the convolution coding and especially its decoding ! I want to use the following code rates: 1/3; 1/2; 5/8; 3/4; For the first two I use different trellis operators (still standard ones) and since I don't use any noise the BER is obviously 0. For the 3rd and 4th rat

Frequency response of Raised Cosine Filter using MATLAB code

Hi, I want to know how to draw the frequency response of raised cosine Filter (using the equation ) in matlab. I tried to implement the equation in matlab but I am not successful in getting the expected result. Can any one please help me with the code?

Hello, I'm simulating DVB-S2 blocks' chain with SIMULINK matlab. I'm using DVB-S2 demo already loaded in SIMULINK libraries, I want to add to it a raised cosine Filter in transmitting and in receiving, but I have high values of BER, around 0.49 with ANY Es/No values. What's Wrong? I'm using those values about raised (...)

design a filter with specified impulse response

I need the matlab code for a 3-tapped raised cosine function with impulse response f=.I really need it,plz help me.tnx

hilbert &raised cosine filter

why we use hilbert transform and raised cosine filter in matlab??:roll::roll:

Digital Commuication MatLab

Hi, Can any one please help me with the matlab code to study the effects of truncation and mis-synchronization for a sinc and raised cosine pulse It will be a great help Thanks.

Function to get coefficients of root raised cosine pulse in Matlab

How could I do this function? = Rootraisedcosine(P, B ,T) It has to generate a vector with 2P+1 coefficients of a root raised cosine filter with roll-off= B and period = T. stc so is an struct. I have read about rcosine, rcosflt and design.pulseshaping and don't know how to use them in my (...)

QAM-8 DC Project Matlab Code

Here is 4QAM basic modem model made with matlab 2009b Simulink. You can easily add 4 more phases in the TX1D/RX2D lists. All of used ones are 30deg shifted now. The signal filtering is made using raised cosine filter, so You can remove them if not needed. If the model doesn't work (Altera DSP builder error or smth..), select all items, copy (...)

Need a matlab code to design a root-raised cosine flieter

Check rcosine and rcosflt functions in matlab.

Symbol shaping filter at transmitter

I want to design symbol sahping filter for transmitter output for the spectrum mask. we can achive using raised cosine filter is .i know the matlab function but how to calculate role off factor?

how to draw raised cosine in Matlab

I am having binary bits and i am doing Bits to Symbol mapping. In symbol i am using only 4 symbols +1 -1 +3 -3 I want to draw raised cosine in matlab just like the picture attached. This i have taken from SKLAR book . I know the function in rcosine in matlab but it is not giving desired output (...)

bit synchronizer implementation in matlab simulink

hi,am working on this project and i need a lil help plz nrzl>>>>raised cosine>>>square>>phase locked-loop{pll} plz can anybody simulink this circuit for me???i'll b thank full coz wenever i simulink such circuit i get errors...dammn

Regarding speech processing?

so what's the problem. can you do it in matlab?

Need coefficients for root raised cosine filter

Hi This is not difficult; if you accessible to matlab you can generate it easily. nsamp=fs/Sr=4; number of tap=2*nsamp*delay+1=41 Therefor delay=5 cosine(1,nsamp,'sqrt',rolloff,delay)=cosine(1,4,'fir/sqrt',0.3,5) if you don't have matlab software say I generate it! :D if it is correct click helped me!!

Raised cosine IIR Lowpass digital filter

I want to design a lowpass IIR filter with following specification using "rcosine" matlab command. The LPF filter should extract the fundamental component of input signal. cut_off frequency=500Hz Sampling frequency=20000Hz; Roll_off factor=0.6 Delay=2 Cycle of fundamental component; Fundamental frequency=400Hz Can any one help me

Question on raised Cosine Low pass Filter

I want to design a lowpass IIR filter with following specification using "rcosine" matlab command. The LPF filter should extract the fundamental component of input signal. cut_off frequency=500Hz Sampling frequency=20000Hz; Roll_off factor=0.6 Delay=2 Cycle of fundamental component; Fundamental frequency=400Hz Can any one help me

problem to calculate Eb/no with matlab

hi to all, I built a communication system with matlab using the QAM modulation method. I didn't use the Simulink?. allso I'm using the Square Root raised cosine at the receiver and transmitter with rolloff 0.4 the system works fine but I have problem to measure the Eb/no. I can't use the AWGN function to add noise but only the (...)

cutoff frequency raised cosine filter

Hi, b = firrcos(n,F0,r,fs,'rolloff') It's the prototype proposed in matlab for firrcos. that F0 is the cutoff frequency. so you can simply set it. but if your problem is something else please explain it. best regards

Calculating the (real) peak value of a set of points

use an interpolator and find the peak matlab has functions for this.

problem with filterbank

This matlab program is for making a suitable wavelet kernel It derives the Low pass filter by sampling from analog raised cosine function in frequency domain and taking ifft from this function to yield the impulse response. (other filters are derived using orthogonal relations). first i wnat know if the filter design method has any (...)

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