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## Upsampling Matlab |

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upsampling , upsampling filter , matlab source code for matlab , gsm and matlab using matlab

17 Threads found on edaboard.com: **Upsampling Matlab**

I would like to design a 8x **upsampling** filter for 32Khz , 44K , and 48K sample rate . How to optimize the coeffiecient for three of the sample rate . Using the **matlab** , i only can assume the sample rate of the input signal is one the them like 44.1K .

Digital Signal Processing :: 26.12.2003 22:18 :: Ansunamu :: Replies: **2** :: Views: **2835**

Hi,
I want to use interpolation (**upsampling**) in my project. The process as explained in DSP books is first adding L-1 zeros between between each sample and then low pass filtering with cut off frequency of Pi/L .How should such filters be designed? Any more information about this topic in general is appreciated.
Thx.

Digital Signal Processing :: 11.05.2006 10:08 :: cmos babe :: Replies: **3** :: Views: **1667**

Hi,
1- Pulse shaping filter reduce side lob level and interference to other channel frequencies, but we have two choice for implementing Raise Cosine filter, (a) using analog filter after D/C converter, or (b) using **upsampling** for practical possibility of digital implementation.
2- sqrt(100) is because after **upsampling** signal power decrease 1

Digital communication :: 10.02.2007 07:57 :: mahdithdn :: Replies: **3** :: Views: **2211**

i hav a cos signal ...first i want to downsampling wid 2..and then using dat signal i want to **upsampling** by 3..
Added after 3 hours 37 minutes:
PLz help me doing dat...
in **matlab**...

Electronic Elementary Questions :: 26.11.2007 10:02 :: ednan :: Replies: **3** :: Views: **685**

Is this a simple sinusoid? (i.e. sin(t)?) or is it a sinusoidal carrier with a modulated baseband signal (like a simple AM/FM modualtion)? Does the modulation need to remain intact on the harmonics (remain uncompressed due to **upsampling**)?
If it's a simple sinewave, you could simply do 1*sin(t) + 0.7*sin(3t) + 0.45*sin(5t) + 0.38*sin(7t) + 0.29*s

Digital Signal Processing :: 30.05.2012 22:11 :: enjunear :: Replies: **3** :: Views: **1122**

I did not understand your methods for **upsampling** and downsampling.
Why you dont use direct **matlab** operators for this: downsample(x,n) and upsample(x,n)?
it's very simple to know. You can use function of **matlab**. for example: downsample help .

Digital Signal Processing :: 14.08.2012 21:30 :: hieuphong :: Replies: **2** :: Views: **3711**

Here i have a code to downsample a given sequence.
in editor:
function= dns(x)
k = input('Enter downsampling factor = ')
y= x(1:k:length(x));
end
in command window:
>> x =
>> dns(x)
Enter downsampling factor = 3
k =
3
ans =
1 4 7 10
I need a similar type of c

Digital Signal Processing :: 18.04.2013 12:43 :: Prosenjit101 :: Replies: **2** :: Views: **2726**

my input sampling frequency is 41khz and would like to **upsampling** it to at the output (out@fs), should i implement a switch that switching at the frequency of 82khz for the **upsampling** purpose?
What do you mean by " what the interpolated samples should be placed between?
I meant between what - between input

Digital Signal Processing :: 23.04.2013 03:59 :: Mityan :: Replies: **8** :: Views: **446**

Hello!
After having implemented some digital audio projects in VHDL using own code or supplied IP I now want to try the System Generator for a simple **upsampling** from 48 to 96kHz. I am used to work with **matlab**/Simulink, so it was a questions of an hour until the simulation in Simulink and ModelSim was successful. It basically consists of a gatewa

Digital Signal Processing :: 13.10.2005 11:33 :: hwb :: Replies: **0** :: Views: **923**

I want to design a **upsampling** SRC converter,halfband filter is a priority.but I am a beginner in Multirate DSP.I need some suggestions.
I tinks the most fastest method is to get some demos/examples about halfband filter design process,such as how to use **matlab**/Simulink to design a halfband filter in **upsampling** process according to (...)

ASIC Design Methodologies and Tools (Digital) :: 14.12.2006 21:28 :: ls000rhb :: Replies: **0** :: Views: **560**

I want to design a **upsampling** SRC converter,halfband filter is a priority.but I am a beginner in Multirate DSP.I need some suggestions.
I tinks the most fastest method is to get some demos/examples about halfband filter design process,such as how to use **matlab**/Simulink to design a halfband filter in **upsampling** process according to (...)

Digital Signal Processing :: 14.12.2006 21:29 :: ls000rhb :: Replies: **3** :: Views: **1161**

You may use "rised cosine" filter from **matlab**, there are only two functions that you need to do the job (as I remmember, main is "rcosine", look at Help :)). In Simulink there's Filter Design tool, just specify "rised cosine" filter with appropriate roll-off factor. And, yes, this function supposes that you perform **upsampling** before filtering - wh

Digital communication :: 19.02.2008 05:20 :: cheggy :: Replies: **1** :: Views: **695**

Hello,
I have an audio signal which contains a total of 39922 samples with a sampling frequency of 8000 Hz.For a specific reason that relates to my project requirement, i truncate the audio signal to just 100 samples.
I later increase the sampling rate to 112 kHz. Pass the signal through an anti-aliasing filter. As a result of **upsampling**

Digital Signal Processing :: 19.12.2008 00:27 :: MynameNayface :: Replies: **3** :: Views: **2635**

I have problem in demodulating a complex base band signal(QPSK) which is downconverted from IF to baseband (I and Q channels) with some phase and frequency offset (i.e LO at IF did not lock with the phase and frequency of the incoming signal, hence causing frequency and phase error in baseband signal and the QPSK constellation rotates due to this e

Digital Signal Processing :: 09.10.2009 23:42 :: EngrAdnan :: Replies: **1** :: Views: **2097**

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 Cosine

Digital communication :: 16.02.2013 00:21 :: lequangtrung :: Replies: **2** :: Views: **1820**

Please help me with one of this assignment.please help me out please i request you
Write a generic function to implement resampling with following prototype
y = myresample(x,L,M);
% L is an integer representing **upsampling** rate
% M is an integer representing downsampling rate
% x is the 1-D vector representing input signal of any length
%

Digital Signal Processing :: 02.12.2011 14:50 :: Salmantariq :: Replies: **4** :: Views: **2159**

Figured this out on my own. I forgot that **upsampling** should always proceed filtering and not the other way around, therefore the taps are for the upsampled signal, not the original signal.

PLD, SPLD, GAL, CPLD, FPGA Design :: 30.03.2012 01:05 :: rhearty1 :: Replies: **1** :: Views: **556**

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