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Contribute at least one answer each month for 3 consecutive months
Awarded to Owen on 20 Jul 2017
Accept 5 answers given by other contributors
Awarded to Owen on 20 Jul 2017
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...
ungefär 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...
ungefär 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...
ungefär 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...
ungefär 9 år ago | 0 answers | 0
0
answersJPEG file into an array
I tried fread() and it gives the 18.6KB size. Owen
nästan 10 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...
nästan 10 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...
nästan 10 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
nästan 10 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...
ungefär 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...
mer än 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...
nästan 11 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 -...
nästan 11 år ago | 1 answer | 0
1
answertaking out elements from a series of integers
What about with Simulink? Senmeis
ungefär 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...
ungefär 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...
ungefär 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 ...
ungefär 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 ...
mer än 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
ungefär 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)"...
ungefär 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...
ungefär 12 år ago | 1 answer | 0
1
answer
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