How to use DSSS or FHSS sequencing methods in LabVIEW using modulation pallete

Hi
I would really appreciate it if you give me an example how to use DSSS or FHSS using modulation pallete. I searched for any example or tutorial for spread spectrum techniques but I couldn't find anything useful. even a very basic vi might be really helpful for m
Many thanks

Hi en99,
apologies for a very late reply and I'm sure you've figured this out by now anyway but just in case, here's a quick and dirty example of using dsss with a PN sequence and QPSK.
I'm not re-applying the matched filter here since the de-spread requires a tight alignment to the original timings (if you de-spread the wrong chips then you won't get your symbols out correctly so you do need some level of synchronisation).
Have a play with the Eb/No and the filtering from the front panel - you'll see the un dsss'ed spectrum narrow up as expected with some level of filtering, but the aim of dsss is to spread that out.
Hope this is useful.
Thanks
Sacha Emery
ATE Systems Engineer (NIUK)
// it takes almost no time to rate an answer
Attachments:
dsss comparison.vi ‏49 KB
example dsss snippet.png ‏119 KB

Similar Messages

How can I access CAPI 2.0 methods with LabView ?

I must use CAPI 2.0 (common ISDN interface) method with LabView (graphical interface), the work is to command a ISDN S/T card on PXI Bus, and this card support CAPI 2.0.

This depends upon what type of interface you have to the ISDN. I assume you have either Basic Rate Interface (BRI) or Primary Rate Interface (PRI). Do you have a DLL to control it? If so, you can use the "Call Library Function Node" VI to access this DLL and just make calls to it. If you have an ActiveX Server, you can use the LabVIEW ActiveX Automation VIs to access it.
J.R. Allen

How to find out the value a method is returning using JDI

Is it possible to find out what value (not simply the type) a method returns. I'd have thought there would be some access under MethodExitEvent but I can't find anything.

Is it possible to find out what value (not simply the
type) a method returns.There's currently no way to access a method's return value in
method exit events
This is Bug Id: 4195445
Synopsis: JVMDI spec: Add return value to Method Exit Event
http://developer.java.sun.com/developer/bugParade/bugs/4195445.html
See also:
http://developer.java.sun.com/developer/bugParade/bugs/4813046.html
This will be fixed in the next major release of J2SE (code named 'tiger')

How to create a table in MS Access from Labview using ActiveX?

I want to transfer datas from Labview to Access using activeX method. My only problem is to find out how to create a new table (array) in Access from the Labview program.
Remarks: I use Labview 6i and MS Access 2000.
For the moment I can write and read datas of Access from Labview.
If someone could help me... that would be grate!

This is off the Microsoft MSDN site "creating an external table". I think you can drop the last step.:
Open the database you want to create the table in. If it is the current database, use the CurrentDb function to return an object variable that represents the current database. If it isn�t the current database, use the OpenDatabase method to open the database you want.
Use the CurrentDb function to create a Database object that points to the current database.
Use the CreateTableDef method of the Database object to create a table definition for the Microsoft Access table.
Use the CreateField method of the TableDef object to create one or more fields in the Microsoft Access table.
Use the Append method of the Fields collection to add the new field or fields t
o the Microsoft Access table.
Use the Append method of the TableDefs collection to create the Microsoft Access table.
Use the TransferDatabase method to create the external table in the specified folder.
Use the Delete method of the TableDefs collection to delete the Microsoft Access table definition.

How can we store code permanent into lm3s8962 through labview arm module?

I am using labview 2012with arm module.I got problem that my code is not store permenent into lm3s8962 luminary board so when i unpuggled the board then loaded code erased. so is their any setting should done which can store code permenent into the lm3s8962 luminary board..?

After a build in LabVIEW you can see the code in KEIL uVision. I think that your project is already set to download it to the flash.
I think you have set the option in de LabVIEW build: enable debugging and Generate guard code.
when you uncheck them, your application wont need a kick from your debugger to start the application..
Wouter.
"LabVIEW for ARM guru and bug destroyer"

How I can pass parameters by POST method?

How I can pass parameters by POST method?
I use URL Template iView. I checked Requested Method - POST, but when I started the iView the program says:"It's a GET method!"
I use httpServletRequest.getMethod()in the program.
Environment: EP6 SP2
Thank's!

Hi Kremena,
the OSS stands for "Online Service System" - service.sap.com - messages or directly: service.sap.com/message.
Hope it helps
Detlev

How to count number of lines inside methods() using the Doclet API

Wrote a custom doclet using the [Doclet API|http://java.sun.com/j2se/1.3/docs/tooldocs/javadoc/doclet/index.html ] .
The purpose for the doclet is to load Java source files and create stubs (which are identical Java source files but do not contain any method implementation details).
Instead, the method implementation details need to be replaced with blank lines...
public class MyDoclet {
     private static String TAB = "\t";
     public static boolean start(RootDoc root) {
          ClassDoc[] classes = root.classes();
          // Parse through class or interface
          for (ClassDoc clazz : classes) {
               Type superClass = clazz.superclassType();
               // Print Methods
               MethodDoc[] methods = clazz.methods();
               for (MethodDoc method : methods) {
                    Parameter[] parameters = method.parameters();
                    println();
                    if (!method.isPrivate()) {
                         print(TAB + method.modifiers() + " "
                                                + method.returnType().simpleTypeName() + " " + method.name());
                         print("(");
                         for (int i=0; i < parameters.length; i++) {
                              Parameter parameter = (Parameter) parameters;
                              print(parameter.type().simpleTypeName() + " " + parameter.name());
                              if (i != parameters.length - 1) {
                                   print(", ");
                         print(")");
                         println(" {");
                         println("\n");
                         println(TAB + "}");
          return true;
As one can see, I am just creating the method and placing the opening and closing curly braces (along with a new \n line escape sequence, in between).
Am not really that familiar with the Doclet API...
Question(s):
(1) What is the best way to figure out how many lines of code are inside each method and then use a for loop to insert the exact same number of blank lines inside the methods?
(2) Is there a way to do it using the com.sun.javadoc.SourcePosition.line() method?
Would really appreciate it if someone could help me because this is an important requirement (hence the 10 Duke Stars).
Happy coding to all,
Mike

This is not possible using the Doclet API, because JavaDoc does not store any information regarding implementation detail. Although MethodDoc#position will give you the line where the method is declared, there is no way to determine where the method body starts and ends.
If you need that much information, maybe you would be better of using a tool such as Eclipse's Abstract Syntax Tree parser. AST will provide you with line numbers for each code expression, hence it is relatively easy to compute the first and last line in a method body.

How can I use my array in another method.... Or better yet, what's wrong?

I guess I'll show you what I am trying to do rather and then explain it
public class arraycalc
int[] dog;
public void arraycalc()
dog = new int[2];
public void setSize(int size)
dog[1] = size;
public int getSize()
return dog[1];
This gives me a null pointer exception...
How can I use my array from other methods?

You have to make the array static. :)
Although I must admit, this is rather bad usage. What you want to do is use an object constructor to make this class an object type, and then create the array in your main class using this type, and then call the methods from this class to modify your array. Creating the array inside the other method leads to a whole bunch of other stuff that's ... well, bad. :)
Another thing: Because you're creating your array inside this class and you want to call your array from another class, you need to make the array static; to make it static, you must make your methods static. And according to my most ingenious computer science teacher, STATIC METHODS SUCK. :D
So, if you want to stick with your layout, it would look like:
public class arraycalc
     static int[] dog;
     public static void arraycalc()
          dog = new int[2];
     public static void setSize(int size)
          dog[1] = size;
     public static int getSize()
          return dog[1];
}But I must warn you, that is absolutely horrible code, and you shouldn't use it. In fact, I don't even know why I posted it.
You should definitely read up on OOP, as this problem would be better solved by creating a new object type.

How to open a entity form in a new window using openEntityForm() method.

How to open a entity form in a new window using openEntityForm() method.

As far as I'm aware, there isn't a supported way to do this in the client-side API. You could use window.open instead
Microsoft CRM MVP - http://mscrmuk.blogspot.com/ http://www.excitation.co.uk

How to find out which sequence a certain column used?

you konw column C in table T is created by a sequence.
How to find out which sequence column C is using?

In the meantime I think it ought to becompulsory to
only assign sequence values in triggers.
Why? I can see no good reason for this. I think it's a good idea to have stuff like this
coded in only one placeI don't like your argument for compulsory using triggers for sequences for exactly the same reason as you, ie that I like to keep my code in one place. If I'm reading some pl/sql code which uses a sequence I like to see the fact that the sequence is used in the pl/sql code, rather than to check to see if theres a trigger on the table and then see which sequence that uses.
"naming conventions can work, provided they're enforced. Alas, like other standards, they can only be enforced by active policing".
Thats what code reviews are.
" there is also the special case of one sequence populating more than one table...."
This is My Pet hate. I don't think there's ever a case where this is absolutely necessary. Again code reviews
Unfortunately I have to live with a system which does this.
and I appreciate we can't all have code reviews, etc.

How to set default payment method for Supplier using API

Hi All,
I am doing data conversion and loading suppliers using ap_vendor_pub_pkg.create_vendor api. But, I cannot see any payment_method_lookup_code column in the RECORD type AP_VENDOR_PUB_PKG.r_vendor_rec_type.
how do I assign a default payment method to a vendor ?
Thanks
Shankar

Seems like an ER with Oracle Support.
Bug 11895105: ADDING PAYMENT_METHOD_LOOKUP_CODE FOR AP_VENDOR_PUB_PKG.UPDATE_VENDOR_SITE
Currently system doesnt allow you to update the PAYMENT_METHOD_LOOKUP_CODE in AP_VENDOR_PUB_PKG.Update_Vendor_Site.Because above column does not define in l_vendor_site_rec regardless other procedure.

How do I remove a number sequence using batch rename

Hi
I know I've done this in the past but cannot seem to work it out today.
I have a series of images "_####_[layercompName].png". I would like to remove the underscores and numbers. The underscores removal is easy, but how do I remove the numbers (####) when they are different for each filename? I would like the end result to be [layercompName].png
The reason I have these filenames in the first place is that I have run the photoshop script "layer comps to files", and this adds a number sequence prefix. I have tried to alter the script following various instructions I've found from trawling the internet (this one included How do you remove the number sequence when exporting layer comps to files? CS6. Windows 8.) but without any luck. So now I'm resorting to batch renaming in Bridge.
Thanks!

Here you go, taken straight from: DesignEasy: How to Remove Sequence Numbers and Empty Spaces When Exporting Layers and Layer Comps
Run Adobe Bridge and navigate to the folder with exported files.
Select all files which have sequence numbers.
Go to Tools > Batch Rename.
Choose: String Substitution from the first drop-down list in New Filenamessection. From the second drop-down choose: Original Filename. In the Find: text field type: _\d{4}_ (underscore, backslash, letter d, open bracket, number four, closed bracket, underscore). Leave Replace with: text field blank. Ensure that you have Replace All and Use Regular Expression checked as shown on the screenshot below.
Click on the Preview button in the top right corner and ensure that files will be renamed as you want.
Click on Rename button and you are done.
In case you are first time doing this and you still have doubts if everything will work as expected, check Copy to other folder option when renaming files. This option is located near the top left corner under: Destination Folder.
Another thing I want to mention is to remove everything that you have below String Substitution options. In case you see additional renaming options just click on minus (-) sign on the right side to remove them.
How to remove/substitute empty spaces in the file name using Adobe Bridge
It is pretty similar process. The only difference is that you should type: \s (backslash followed with letter s) in the Find: text field. You can leave Replace with: text field blank or to type underscore.

How to remove project using sql with right sequence

Hi,
Tried to remove failed project using queries as per sequence specified as below.But getting below error while running final sql script(delete from epub_process where project = '?')
SQL Error: ORA-02292: integrity constraint (PUB.PROC_HIST_ID_FK) violated - child record found
02292. 00000 - "integrity constraint (%s.%s) violated - child record found"
*Cause:    attempted to delete a parent key value that had a foreign
           dependency.
*Action:   delete dependencies first then parent or disable constraint.
delete from avm_asset_lock where workspace_id in
(select id from avm_devline where name in
(select workspace from epub_project where project_id = 'prj49024'));
delete from EPUB_PR_HISTORY where project_id in
(select project_id from epub_project where project_id = 'prj49024');
delete from epub_project where project_id = 'prj49024';
delete from EPUB_PROC_HISTORY where process_id in
(select process_id from epub_process where project = 'prj49024');
delete from EPUB_PROC_TASKINFO where id in
(select process_id from epub_process where project = 'prj49024');
delete from epub_taskinfo where process_id in
(select process_id from epub_process where project = 'prj49024');
delete from EPUB_WORKFLOW_STRS where id in
(select ID from EPUB_IND_WORKFLOW where process_id in
(select process_id from epub_process where project = 'prj49024'));
delete from EPUB_IND_WORKFLOW where process_id in
(select process_id from epub_process where project = 'prj49024');
Getting error while executing this script
delete from epub_process where project = 'prj49024';
Please let me know right sequence or how to avoid this error
Thanks
Sri

Thanks Shaik.Slight modification to your query working.
delete from EPUB_PR_HISTORY where project_id in ('prj213002','prj200001');
delete from EPUB_PROC_HISTORY where process_id in
(select process_id from epub_process where project in ('prj213002','prj200001'));
delete from EPUB_PROC_TASKINFO where id in
(select process_id from epub_process where project in ('prj213002','prj200001'));
delete from EPUB_IND_WORKFLOW where process_id in
(select process_id from epub_process where project in ('prj213002','prj200001'));
delete from epub_process where project in ('prj202001','prj213002');
delete from avm_asset_lock where workspace_id in
(select id from avm_devline where name in
(select workspace from epub_project where project_id in ('prj213002','prj213002')));
delete from epub_project where project_id in ('prj202001','prj213002');
commit;

How to use an object's paint method

I have created a class imagePanel which extends a jPanel to display an image. When I create a new imagePanel object I pass it an image argument which is used to paint my image on the jPanel, so far so good. I don't wish to have to continuously create new ImamePanels to display new images so I thought I could make a set_Image method that would set a new image in an exising imagePanel object. This is where I run into problems how to use the existing object paint method to replace the image. I tried this without success:
public Image setMyImage (Image myImage)
imageX = myImage; // imageX is the image that is painted by the imagePanel object's paint method
paint(g);
Something must be wrong on how I access the paint method. Thanks for any help.
Jack

Yahoooo, got it. This was the code I needed and thanks for your help:
public void setImage (Image myImage)
imageX = myImage;
repaint(300);
}

HT1689 Using my iPad how can I make paypal my payment method on iTunes??

Using my iPad how can I make paypal my payment method on iTunes??

When you open a word document, on the bottom of the keyboard next to the spacebar there should be a microphone. Tap it and speak what you want into it then tap it again to stop.

How to use DSSS or FHSS sequencing methods in LabVIEW using modulation pallete

Similar Messages

Maybe you are looking for