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**Feeds**

Question

blocks of spread spectrum

Hi, I have to convert a bitstream of 10 kbps to 100k bps using spread spectrum in Simulink. Which blocks are suitable for thi...

nästan 9 år ago | 0 answers | 0

### 0

answersQuestion

sample time not compatible

Hi, in this link <http://www.mathworks.com/matlabcentral/fileexchange/722-bluetooth-modulation-and-frequency-hopping> a Simul...

nästan 9 år ago | 0 answers | 0

### 0

answersQuestion

Simulink examples of Adaptive Frequency Hopping

Hi, I am looking for Simulink examples of Adaptive Frequency Hopping which is a closed loop. Can anyone give me a hint? Ow...

nästan 9 år ago | 0 answers | 0

### 0

answersQuestion

Selector block before the spectrum scope

Hi, in this example <http://de.mathworks.com/help/comm/examples/bluetooth-frequency-hopping.html?s_tid=srchtitle%20 Bluetooth...

nästan 9 år ago | 0 answers | 0

### 0

answersJPEG file into an array

I tried fread() and it gives the 18.6KB size. Owen

mer än 9 år ago | 0

Question

send data in frame based mode in Simulink

Hi, How to send 65536 bytes step by step in frame based mode in Simulink? In every frame shall 1024 bytes be sent, so there a...

mer än 9 år ago | 1 answer | 0

### 1

answerJPEG file into an array

Thanks. It works, but there is still a problem with size matching. An JPEG file has the following parameters: 18.6KB, 242x379, b...

mer än 9 år ago | 0

Question

JPEG file into an array

Hi, is it possible to convert an JPEG file into an array in Matlab? What about the reverse conversion? Owen

mer än 9 år ago | 3 answers | 0

### 3

answersQuestion

sample rate of a DUC object

Hi, I’m using the DUC system object to make frequency upconversions: <http://www.mathworks.com/help/dsp/ref/dsp.digitalupconv...

nästan 10 år ago | 1 answer | 0

### 1

answerQuestion

where to find memory limit

Hi, I’m using the example code of dsp.DigitalUpConverter System object to make some tests: <http://www.mathworks.com/help/dsp...

ungefär 10 år ago | 3 answers | 0

### 3

answersQuestion

problems with initial values of Buffer block

Hello, I want to process 5 bytes at every sample time in Simulink, but the input is a bitstream. I have to do some conversion...

mer än 10 år ago | 0 answers | 0

### 0

answersQuestion

import 4x1 vectors from Inport block

Hi, I want to import some data (100 numbers) from Workspace into a Simulink model with an Inport Block. The data is genera...

mer än 10 år ago | 0 answers | 0

### 0

answersQuestion

sequence output with the Constant block

Hello, is it possible to output the sequence 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 ... With the Constant block? Senmeis

mer än 10 år ago | 0 answers | 0

### 0

answersQuestion

sample time from "From Workspace" block

Hello, I connect a From Workspace Block with a To Workspace Block so that the variable in From Workspace can be read into To ...

mer än 10 år ago | 0 answers | 0

### 0

answersQuestion

waveform signals collecting in Phased Array System Toolbox

Hi, I want to calculate the signal arriving at an antenna array with the method „collectPlaneWave“ from Phased Array System T...

mer än 10 år ago | 1 answer | 0

### 1

answerQuestion

how to solve this matrix equation?

Hello, The product of a 3x5 matrix B and a 5x3 matrix K shall be a unit matrix. B = [0 3 -1 2 1;-4 0 -1 -3 1;0 0 3 -...

mer än 10 år ago | 1 answer | 0

### 1

answertaking out elements from a series of integers

What about with Simulink? Senmeis

nästan 11 år ago | 0

Question

taking out elements from a series of integers

Hello, I can’t develop the following simple model with Simulink, so please help me with it. A generator creates a series o...

nästan 11 år ago | 2 answers | 0

### 2

answersQuestion

synchronization marker for receiver

Hi, In a communication system a marker of 32 bits is used to synchronize the receiver. After these 32 bits, 255 data bytes sh...

nästan 11 år ago | 0 answers | 0

### 0

answersQuestion

two issues about the Spectrum Scope block

Hi, Please help me with two issues about the Spectrum Scope block. Is it possible to freeze the scope while simulation so ...

nästan 11 år ago | 0 answers | 0

### 0

answersQuestion

power of a modulated waveform

Hi, I must determine the power of a modulated waveform in Simulink. As far as I know this waveform is represented by many ...

ungefär 11 år ago | 0 answers | 0

### 0

answersQuestion

question regarding an passband example

Hi, By typing "commpassbandmod" in the command console you can open a passband simulation example model. If the parameter...

mer än 11 år ago | 0 answers | 0

### 0

answersQuestion

build an OQPSK passband model

Hi, I have to build an OQPSK passband model. Now there are two choices: 1. modem.oqpskmod function (in form of I+jQ) + mul...

mer än 11 år ago | 1 answer | 0

### 1

answerQuestion

sample times of a product block

Hi, I have to use the "Product" block as a mixer. Somehow I get this knowledge: The sample times of two inputs must not have ...

mer än 11 år ago | 0 answers | 0

### 0

answersQuestion

"Upsampling factor" in "Raised Cosine Transmit Filter" block

Hi, A parameter "Upsampling factor" can be seen in the "Raised Cosine Transmit Filter" block and this one must be at least 2....

mer än 11 år ago | 0 answers | 0

### 0

answersQuestion

up conversion problem in Simulink

Hi, I want to up convert a signal with the following structure: The source and a "Sine Wave" block are connected with a "Prod...

mer än 11 år ago | 0 answers | 0

### 0

answersQuestion

two questions about soft decision for Viterbi Decoder

Hi, the parameter "Number of soft decision bits" in Viterbi Decoder can be set to 1. Does this equal to hard decision? Are...

nästan 12 år ago | 0 answers | 0

### 0

answersQuestion

solver for digital systems

Hi, is it better to set Solver to "discrete (no continuous states)" for digital systems? Thanks Senmeis

nästan 12 år ago | 1 answer | 0

### 1

answerQuestion

"Signal to noise ratio" and "Input signal power, referenced to 1 ohm (watts)" in AWGN

Hi, In the AWGN block there are two parameters: "Signal to noise ratio" and "Input signal power, referenced to 1 ohm (watts)"...

nästan 12 år ago | 0 answers | 0

### 0

answersQuestion

import variables from Base Workspace into Simulink model

Hi, Is it possible to show the variables in Base Workspace on the Simulink model window automatically after one simulation? M...

nästan 12 år ago | 1 answer | 0