http://www.dsplog.com/2009/04/13/transmit-beamforming/ Signal Processing for Communication Fri, 10 Feb 2012 01:03:15 +0000 hourly 1 http://wordpress.org/?v=3.3.1 http://www.dsplog.com/2009/04/13/transmit-beamforming/#comment-73909 Krishna Sankar Sun, 30 Oct 2011 14:30:33 +0000 http://www.dsplog.com/?p=535#comment-73909 @flz: the noise term n is a voltage term. @flz: the noise term n is a voltage term.

]]> http://www.dsplog.com/2009/04/13/transmit-beamforming/#comment-72852 flz Sat, 22 Oct 2011 02:53:48 +0000 http://www.dsplog.com/?p=535#comment-72852 In "y1 = sum(h.*sr,1) + 10^(-Eb_N0_dB(ii)/20)*n; " why use " 10^(-Eb_N0_dB(ii)/20)*n; " not "10^(-Eb_N0_dB(ii)/10)*n; " ? In “y1 = sum(h.*sr,1) + 10^(-Eb_N0_dB(ii)/20)*n; ” why use ” 10^(-Eb_N0_dB(ii)/20)*n; ” not “10^(-Eb_N0_dB(ii)/10)*n; ” ?

]]> http://www.dsplog.com/2009/04/13/transmit-beamforming/#comment-24873 Krishna Sankar Sun, 04 Apr 2010 23:24:20 +0000 http://www.dsplog.com/?p=535#comment-24873 @Osama: We have an array in the transmitter and at the transmitter we know the channel, dont we? We can use that information to get the performance gains @Osama: We have an array in the transmitter and at the transmitter we know the channel, dont we? We can use that information to get the performance gains

]]> http://www.dsplog.com/2009/04/13/transmit-beamforming/#comment-24826 Osama Sun, 04 Apr 2010 18:24:50 +0000 http://www.dsplog.com/?p=535#comment-24826 Hello, I just want to ask why the informed 2x1 coincides with the 1x2 system regarding the BER? As we know we have 'Array Gain' in the latter scenario and we don't have it in the former one. Does this have to do with Eb/No instead of SNR? Thanks Osama Hello,
I just want to ask why the informed 2×1 coincides with the 1×2 system regarding the BER? As we know we have ‘Array Gain’ in the latter scenario and we don’t have it in the former one.
Does this have to do with Eb/No instead of SNR?
Thanks
Osama

]]> http://www.dsplog.com/2009/04/13/transmit-beamforming/#comment-24434 Krishna Sankar Wed, 31 Mar 2010 00:10:13 +0000 http://www.dsplog.com/?p=535#comment-24434 @seynabou diene: Sorry, did not understand multi-beam vs single-beam. Is it multi-user vs single-user? @seynabou diene: Sorry, did not understand multi-beam vs single-beam. Is it multi-user vs single-user?

]]> http://www.dsplog.com/2009/04/13/transmit-beamforming/#comment-24355 Krishna Sankar Mon, 29 Mar 2010 23:36:09 +0000 http://www.dsplog.com/?p=535#comment-24355 @Raja: Where you able to get the simulation models up? @Raja: Where you able to get the simulation models up?

]]> http://www.dsplog.com/2009/04/13/transmit-beamforming/#comment-22102 Raja Wed, 03 Mar 2010 05:42:51 +0000 http://www.dsplog.com/?p=535#comment-22102 Hi krishna, this is raja, i am doing research in the area of transmit beamforming by using SVD and i have use the rayleigh channel and MRC at the receiver...here mainly i concentrate on using different modulatin BPSK and 16-QAM and got the graph for BER vs SNR......i dont know how to derive the equations for BER calculation.....can u help me please.......i am waiting for ur reply plz....... Hi krishna,
this is raja, i am doing research in the area of transmit beamforming by using SVD and i have use the rayleigh channel and MRC at the receiver…here mainly i concentrate on using different modulatin BPSK and 16-QAM and got the graph for BER vs SNR……i dont know how to derive the equations for BER calculation…..can u help me please…….i am waiting for ur reply plz…….

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