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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...
ongeveer 9 jaar 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...
meer dan 9 jaar 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...
meer dan 9 jaar 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...
meer dan 9 jaar ago | 0 answers | 0
0
answersJPEG file into an array
I tried fread() and it gives the 18.6KB size. Owen
bijna 10 jaar 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...
bijna 10 jaar 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...
bijna 10 jaar 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
bijna 10 jaar 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...
meer dan 10 jaar 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...
meer dan 10 jaar 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...
meer dan 10 jaar 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...
meer dan 10 jaar 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
meer dan 10 jaar 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 ...
meer dan 10 jaar 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...
bijna 11 jaar 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 -...
bijna 11 jaar ago | 1 answer | 0
1
answertaking out elements from a series of integers
What about with Simulink? Senmeis
ongeveer 11 jaar 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...
ongeveer 11 jaar 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...
meer dan 11 jaar 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 ...
meer dan 11 jaar 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 ...
meer dan 11 jaar 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...
bijna 12 jaar 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...
bijna 12 jaar 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 ...
bijna 12 jaar 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....
bijna 12 jaar 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...
bijna 12 jaar 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...
ongeveer 12 jaar 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
ongeveer 12 jaar 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)"...
ongeveer 12 jaar 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...
ongeveer 12 jaar ago | 1 answer | 0
1
answer
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