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Every time I use the Rayleigh multipath-fading simulator in simulink
(v4.0) it induces a BER of about 50% in my communications model, even with FEC. I have tried changing all of the parameters in the simulator, but nothing seems to help. Even if I reduce the numbers of paths to one, and increase the gain dramatically it still produces the same result. Does anyone have experience with this simulator that can shed some light on this issue? Thanks BL |
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Simulink Rayleigh Multipath Fading Simulator
Started by ●July 31, 2002
Reply by ●August 1, 20022002-08-01
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Hello I guess that the receiver delay of "Error rate Calcuration" Block is not match to your system. Change the delay value. Delay time between two signals can be get as follows; 1. Connect "to Workspace " temninals to signals. ex: "yout" to system input , "yout2" to system output 2. Start the simulation and stop after a few second. 3. Check the correration by "XCORR" function on command window, [C,lags]=XCORR(yout,yout2); plot(lags,C) the peak portion correspons to the delay of your two signal. NICK NAGAO ----- Original Message ----- From: League Robert M. To: ' Sent: Wednesday, July 31, 2002 8:52 AM Subject: [matlab] Simulink Rayleigh Multipath Fading Simulator Every time I use the Rayleigh multipath-fading simulator in simulink (v4.0) it induces a BER of about 50% in my communications model, even with FEC. I have tried changing all of the parameters in the simulator, but nothing seems to help. Even if I reduce the numbers of paths to one, and increase the gain dramatically it still produces the same result. Does anyone have experience with this simulator that can shed some light on this issue? Thanks BL Yahoo! Groups Sponsor Click here to find your contact lenses! _____________________________________ Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. _____________________________________ About this discussion group: To Join: To Post: To Leave: Archives: http://www.yahoogroups.com/group/matlab More DSP-Related Groups: http://www.dsprelated.com/groups.php3 |
