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CDMA2000 Downlink Simulink Models

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CDMA2000 Downlink Simulink Models

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25 Sep 2002 (Updated )

Simulation of a CDMA2000 downlink system

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Description

This model simulates a CDMA2000 1xRTT Forward link (between Base Station and Mobile Station).

In particular, it simulates the Radio Configuration 3 of a Forward Fundamental channel.

The block CDMA2k: Initial settings allows you to set different parameters such as data rate, Power Control
SubChannel insertion rate, spreading code index, QOSF index and the channel model.

This application example includes the following blocks:
- Frame Quality Indicator insertion and extraction
- Adding and deleting Tail Bits before and after coding
- Convolutional encoding and decoding
- Repetition and derepetition
- Puncturing and Zero padding
- Interleaving
- Long Code scrambling
- Power Control insertion
- Signal Point mapping
- Modulation
- Spreading by Walsh code and a QOF mask
- Walsh Code rotation
- Quadrature scrambling by a PN Sequence
- Tx and Rx filtering by an oversampled RRC
- Different channel models such as AWGN or Multipath Rayleigh Fading
- Rake receiver + Channel estimation

Highlights:
- Extensive use of the Communications Blockset library to implement wireless systems
- Use of sub-system to represent the architecture of the design
- Use of a library to reuse and share custom built blocks
- Use of S-Function builder to insert customized C code to implement an extended PN Sequence
- Use of general mask to control the different parameters of the simulation
- Extensive use of scopes to visualize the data at different points of the model

Required Products Communications System Toolbox
Communications Blockset
DSP System Toolbox
Signal Processing Toolbox
Simulink
MATLAB release MATLAB 6.5 (R13)
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Comments and Ratings (63)
28 Jan 2014 Mahdiyar

Dear All

I opened the Simulink model and then initialized it. Finally, I ran it but it gave me two errors as follows:

1-
For S-function 'sdspupfir2', the number of defined parameters, 27, does not match the number of parameters on the dialog of 'cdma2k_phlayer/Rx Antenna/Rake Receiver/Rake Finger/Channel Estimation/Low Pass Filter', 4. These two values must be identical.

2- Error in S-function 'cdma2k_phlayer/Tx Antenna/Spreading Non-TD Mode/expand PN Sequence': S-Function 'expandPNSeq' does not exist

I do appreciate it if anyone help me to solve this problem.

14 May 2012 Benjamin  
01 Nov 2011 manish kumar

sir i am facing problems in multiuser cdma reverse spectrum. kindly help me out...

07 Feb 2011 syed zubair

hi i need matlab code for interference cancellation for RAKE system.
pls help me for my final year project
mail me at zubair63@gmail.com
need a favour
thanks

21 Dec 2010 izhar  
02 Nov 2010 Ali Rodan  
28 Sep 2010 peyman jamali

Hi,I am looking for MATLAB codes of power control CDMA,could you please send its file to me,
rEGARDS

03 Apr 2010 Yalcindag Yalcindag

hi, i am studying on a project, can you send me the codes and source files?

28 Jun 2009 andreea

hi, i have a project in CDMA2000 and i'm trying to work with this cdma2000 Matlab Simulation. I'm having troubles with it. I'm running the simulation with Matlab 6.5 Release 13, but two errors appear:
1: Error while obtaining sizes from MEX S-function 'expandPNSeq' in block 'cdma2k_phlayer/Rx Antenna/Rake Receiver/Spreading Codes/expand PN Sequence'. MATLAB error message:
Invalid MEX-file
2: Error while obtaining sizes from MEX S-function 'expandPNSeq' in block 'cdma2k_phlayer/Tx Antenna/Spreading Non-TD Mode/expand PN Sequence'. MATLAB error message:
Invalid MEX-file
what do i need to do to make it work?
Thanks a lot in advance for your help.

07 Apr 2008 Van Hoang Ngoc

Thanks

01 Mar 2008 Tamiru Shako  
30 Jan 2008 aitlahcen simo

hi, i have a project in CDMA2000, please can you send me a small report of this project in order to i understand the job of each bloc and function. thank you

30 Jan 2008 hamid hirchaou

when i start simulation i have this error :
C:\PROGRA~1\MATLAB\R2007A\BIN\MEX.PL: Error: No compiler options file could be found to compile source code. Please run "mex -setup" to rectify.
please, help me

26 Jan 2008 hamid hirchaou

thank you very much for this file.

12 Dec 2007 hamid hirchaou

hello, i need to simulat a cdma function with matlab, please help me.

28 Nov 2007 Hamid HIRCHAOU

c'est très interessant

16 Oct 2007 aslan hejazi  
05 Oct 2007 neha aggarwal  
23 Sep 2007 bryan lisa

i need to receive necessary informatiom to be able to work on Simulation of a CDMA2000 downlink system and run the result on matlab

18 May 2007 chisom nnadimma

i need to receive necessary informatiom to be able to work on Simulation of a CDMA2000 downlink system and run the result on matlab

18 May 2007 chisom nnadimma

i need to receive necessary to be able to work on Simulation of a CDMA2000 downlink system. run the result on matlab

23 Apr 2007 mohammed al_mikhlafi

thank you very mu

18 Apr 2007 Bouafsoun Hamdi

because it cannot worked normally on Matlab2006 libraries

13 Apr 2007 yie steven  
10 Mar 2007 Jalal Darwish

please send me a CDMA2000 code (m-file ) or a simulik code if u can because i need it in my FYP in my study
thanhs alot 4 ur reply ...

23 Feb 2007 TEJESH KUMAR

Hi friend i am Tejesh Kumar from National Institute of Technology,Currently i am working on soft handover algorithem for UMTS so i need some basics redarding soft handover in CDMA,i hope your Positive Response.

With regards
TEJESH KUMAR

15 Feb 2007 Carlos Vila

This version is now obsolete. An updated version is necessary (includin EvDO)

18 Dec 2006 karima taous Hebib

good job!! can you send me a matlab code
thanks

19 Oct 2006 amira hassine  
03 Oct 2006 vairavel k.s.  
25 Sep 2006 ivan ong

great job.. currently i'm doing a school project on multicode cdma... do you have any information bout it? or block sets? would you mind to send to me? appreciate for your assistance

30 Aug 2006 esmat waley

I need help in cdma2000 1xEV-DO system
Eb/No and BER using it to evaluate the system

24 May 2006 king learn  
07 May 2006 tin mim

nice

26 Nov 2005 lilian li

meeting errors when running the cdma2k_phlayer.mdl. trying to fix it.
extra information about the model from the auther or opinions from other guys would be greatly appreciated.

26 Nov 2005 Lilian Lee

meeting errors when running the cdma2k_phlayer.mdl. trying to fix it.
extra information about the model from the auther or opinions from other guys would be greatly appreciated.

09 Nov 2005 Shahzad Sarwar

Hi I am getting the same type of errors. Have you modified the model yet? Please let me know as im very much interested in it. Regards

03 Oct 2005 azeem yasin

hi, i m final year studentof
B.E(telecommunication) this simulation givs 2 errors, MEX-file , S-parameter. i have matlab 7 , winxp sp2 . can u fix it for all us here. thanks

01 Oct 2005 Anwar Ahmed

hai, I already run your simulation, and I get the s-function error msg as well? Can you please get help about?

17 Aug 2005 Lindy Hsu

Hi, I'm trying to run your simulation, and I get the s-function error msg as well? Can you please help?? Thanks

27 Apr 2005 Chris Arney

I can't get it working either... I get 2 errors:
"Error while obtaining sizes from MEX S-function 'expandPNSeq' in block 'cdma2k_phlayer/Rx Antenna/Rake Receiver/Spreading Codes/expand PN Sequence'. MATLAB error message:
Invalid MEX-file"
and
"Error while obtaining sizes from MEX S-function 'expandPNSeq' in block 'cdma2k_phlayer/Tx Antenna/Spreading Non-TD Mode/expand PN Sequence'. MATLAB error message:
Invalid MEX-file"
What did you mean by visual? visual basic?

07 Apr 2005 mac steff  
26 Jan 2005 mary jones

hi
im trying to run the simulation but two errors related to s-function appears , please send me some information or anything that could help me in simulation
thank you

27 Dec 2004 Federico Gesualdo

Hi,

I was having problems with the simulation with Windows 98. After installing Visual the simulation worked perfectly. It's excellent. Thanks a lot and Best regards,

Federico

15 Nov 2004 Federico Gesualdo

Hi,

I'm trying to work with this cdma2000 Matlab Simulation. I'm having troubles with it. Could you please, if it were possible, help me with this (described in the Post Script)?. Thanks a lot in advance for your help, Best regards,

Federico


P.S.:
- I'm running the simulation with Matlab 6.5 Release 13:
http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=2437&objectType=file
- I installed the simulation files in the "work" folder inside Matlab folder.
- I run it from the "command window" with: "cdma2k_phlayer"
- Then shows up the "cdma2k_phlayer" window, some of the rectangles are black.
- I started the simulation from the menu: "Simulation/Start", then all the rectangles show up in the proper color.
- then two errors appear:
1) Error while obtaining sizes from MEX S-function 'expandPNSeq' in block 'cdma2k_phlayer/Rx Antenna/Rake Receiver/Spreading Codes/expand PN Sequence'. MATLAB error message:
Invalid MEX-file
2) Error while obtaining sizes from MEX S-function 'expandPNSeq' in block 'cdma2k_phlayer/Tx Antenna/Spreading Non-TD Mode/expand PN Sequence'. MATLAB error message:
Invalid MEX-file
- in the "command window" appeared messages like:
??? Invalid MEX-file
Unable to load mex file: C:\MATLABR13\work\expandPNSeq.dll.
It's not possible to find one of the files from the library that is needed for running the application.

15 Nov 2004 prasanna kumar

this file is not excuting, giving lot of errors.how can i simulate this, what r the parametrs can i give first to simulate this.

10 Nov 2004 amer al-radaideh

have a good done but we need more from u in power electronics and simulation

13 Aug 2004 Aamir Khan

Hey Alex,

Your model is good. Would you please share the MATLAB code with me.

Thanks

Aamir

13 Aug 2004 Aamir Khan  
10 Jun 2004 Pablo Castro

hi, i run the simulation and a error apeared
says something like a library is missing but the library is inside the folder. how do i make the simulation work ??

14 Feb 2004 mahendra negalur  
11 Jan 2004 Haidas Med

send me Matlab code for (IGBT)

11 Jan 2004 Haidas Med

Model of (IGBT) by matlab

09 Nov 2003 manish agrawal  
03 Nov 2003 ren ren

very good!!

23 Sep 2003 petros konstantinopoulos  
05 Aug 2003 glacier cao

good!

12 Jul 2003 Gito Prastomo

Its very good for understanding CDMA

25 Apr 2003 ilyas haciomeroglu  
11 Apr 2003 Ricky Cho

Hi! I got the file but when I unzipped the file and opened it. I got the picture with some of blocks are bad link. Do you know why? How I solve this problem?

28 Jan 2003 arun chakaravarthy

it's very useful

02 Jan 2003 Adnene HMIDA

hi,
how to simulate decorrelating detectors for CDMA systems with matlab "matlab simulink"
thanks

26 Dec 2002 ram kumar  

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