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BER of OFDM in rayleigh enviroment using BPSK modulation

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5.0 | 2 ratings Rate this file 75 Downloads (last 30 days) File Size: 2.07 KB File ID: #25693

BER of OFDM in rayleigh enviroment using BPSK modulation

by Mohammad Tahir

30 Oct 2009

script utilizing communication toolbox functions.

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File Information
Description	the results i.e theoretical and simulated are in good agreement with each other...communication toolbox is very handy
Required Products	Communications System Toolbox
MATLAB release	MATLAB 7.9 (R2009b)

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Everyone's Tags	ber(2), bpsk, digital communication, ofdm(2), rayleigh(2)
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Comments and Ratings (9)
17 May 2013	Bruno n1ng	Hi again, I found the editing details for M-QAM here: http://www.mathworks.com/matlabcentral/fileexchange/25694-ber-of-ofdm-using-16-qam-in-awgn/content/qam_ofdm_commtoolbox.m
17 May 2013	Bruno n1ng	Hi Mohammad, When simulating 16-QAM, there is an error: ??? Subscript indices must either be real positive integers or logicals. Error in ==> BER_OFDM_RAYLEIGH at 32 pilot_ins_data=[zeros(nsym,6) par_data(:,[1:nbitpersym/16]) zeros(nsym,1) par_data(:,[nbitpersym/16+1:nbitpersym]) zeros(nsym,5)] ; How may this be resolved?
07 Mar 2012	mathix1	what is the purpose of the pilot insertion?
10 Apr 2011	Kei	Hi, Your code specifies sample time is 1/10000 in rayleighchan. However, I think the sample time of the code is 1/80. Is my understanding wrong? > h=rayleighchan(1/10000,10); Kei
07 Apr 2011	Tewodros Hassen	what are the terms: 10log10(52/64) and 10log10(64/80) and the minus term in the snr definition? Rgs,
08 Mar 2011	Mohammad Tahir	Because we have assumed ideal channel estimation in this case and the improvement of OFDM over BPSK rayleigh will be seen when we have imperfect channel equalization of frequency selective channel which cause ISI at the receiver. (please ignore the first one due to typo)
08 Mar 2011	Luís Miguel	Why OFDM RAYLEIGH is equal to the BPSK RAYLEIGH , should not it be better? please help me
10 Oct 2010	Imran Ali	Huy, Hope this answer is not too late. The modulation object in the program uses modem.pskmod (see line 15 in program). You need to change it modem.qammod, if you want to carry out M-QAM simulation with this program.
09 Jul 2010	Huy Nguyen	Hi Mohammad, Thanks alot for your code. I'm trying to simulate for BER of OFDM in rayleigh fading using BPSK and M-QAM. It's working fine with AWGN. When I applied the rayleigh function as your code, its working only with BPSK and QPSK....not for other M-QAM. Please give me an idea! Many thanks.