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Probabilty of Error in QPSK

 
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bee



Joined: 29 Nov 2003
Posts: 127
Helped: 2
Post07 Aug 2008 16:13   Probabilty of Error in QPSK
can any one tell me the Probabilty of Error of following QPSK system

y = h x +n

where h is a rayleigh fading and n is Gausian nosie.

I need the experssion urgently.

thanks.
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m_pourfathi



Joined: 07 Feb 2008
Posts: 200
Helped: 13
Post09 Aug 2008 10:53   Re: Probabilty of Error in QPSK
You can use MATLAB Communications Toolbox to plot BER curve for different modulation schemes and different fading channels including Rayleigh, with different variance for a specified Signal to noise range.
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gaffar



Joined: 14 Jul 2006
Posts: 71
Helped: 16
Location: Turkey
Post19 Aug 2008 10:17   Re: Probabilty of Error in QPSK
This may be useful:
On the error probability of linearly modulated signals on frequency-flat ricean, rayleigh and awgn channels,
M. G. Shayesteh, A. Aghamohammedi,
IEEE tran. on Commun., vol. 43, no 2/3/4/, feb/mar/apr 1995

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