Rank: 284 based on 338 downloads (last 30 days) and 15 files submitted
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Krishna Sankar M

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Personal Profile:

Krishna Pillai is a Signal Processing Engineer based out of Bangalore, India. His typical activities on a working day involve identifying and modeling digital signal processing algorithms for wireless receivers.

He blogs @ http://www.dsplog.com.
The objective of the blog is to:
"Explain and discuss the basic text book concepts in digital signal processing and digital communication using simple Matlab/Octave scripts."

Professional Interests:
DSP, wireless communication

 

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Files Posted by Krishna Sankar M View all
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(last 30 days)
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27 Jun 2009 Screenshot MSK modulation and demodulation Script for MSK modulation/demodulation and computing BER for different Eb/N0 in AWGN. Author: Krishna Sankar M communications, msk, ber 45 1
  • 5.0
5.0 | 1 rating
27 Jun 2009 Screenshot Alamouti STBC Discuss 2Tx. 1Rx transmit diversity scheme called Alamouti Space Time Block Coding (STBC) Author: Krishna Sankar M communications, alamouti, stbc, signal processing 41 9
  • 4.5
4.5 | 4 ratings
03 Dec 2008 Screenshot MIMO with Zero Forcing equalizer Describes a 2x2 MIMO system using Zero Forcing equalizer in Rayleigh fading channel. Author: Krishna Sankar M communications, zf, mimo, co channel interferen... 46 2
  • 3.33333
3.3 | 3 ratings
02 Oct 2008 Screenshot Simulation of an MSK transmission Generates an MSK transmission Author: Krishna Sankar M msk, transmit, transmission, minimum shift keying 19 1
  • 5.0
5.0 | 1 rating
13 Aug 2008 Screenshot BER for BPSK in Rayleigh channel Simulates the BER for BPSK modulation in Rayleigh channel Author: Krishna Sankar M wireless, ber, bpsk, rayleigh, communications 28 8
  • 2.0
2.0 | 1 rating
Comments and Ratings by Krishna Sankar M View all
Updated File Comments Rating
21 Oct 2009 Editing Matlab files in Vim Edit Matlab M-files in Vim editor (indentation, syntax highlighting, tags , mlint support) Author: Fabrice

Thanks Fabrice. Very useful.
May I request some more features for matching: in addition to existing, support matching groups as if/else, else/end, case/<next>case.

04 Apr 2009 Alamouti STBC Discuss 2Tx. 1Rx transmit diversity scheme called Alamouti Space Time Block Coding (STBC) Author: Krishna Sankar M

@Yi Xiao: The channel power is indeed the scaling factor, no?

21 Mar 2009 Alamouti STBC Discuss 2Tx. 1Rx transmit diversity scheme called Alamouti Space Time Block Coding (STBC) Author: Krishna Sankar M

@Yi Xiao: Well, for BPSK constellation, you are right - one need not divide by the channel power. However, for higher order modulations one needs to take care of the scaling factor such that the constellation boundaries can be defined correctly. Hence provided the equation for the general case. Hope this helps.

Comments and Ratings on Krishna Sankar M's Files View all
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02 Jul 2014 Alamouti STBC Discuss 2Tx. 1Rx transmit diversity scheme called Alamouti Space Time Block Coding (STBC) Author: Krishna Sankar M Ahmed, Saiful

do you have any codes for 2 transmit and 2 received antennas

16 May 2014 Alamouti STBC Discuss 2Tx. 1Rx transmit diversity scheme called Alamouti Space Time Block Coding (STBC) Author: Krishna Sankar M Mat, Hasima

i have used 64-QAM rather than PSK type, do any one have?? please email to siti.nor.hasima@gmail.com #stbc #sfbc #stfbc .. thanks

15 May 2014 Symbol Error Rate for 16QAM in AWGN channel Comparison of simulated and theoretical symbol error rate for 16QAM Author: Krishna Sankar M Ricardo

21 Feb 2014 BER for BPSK in Rayleigh channel Simulates the BER for BPSK modulation in Rayleigh channel Author: Krishna Sankar M Kapur, Soniya

This code helped me a lot... But I want to confirm if we add some shadowing to this code, will it effect the BER Curve

27 Feb 2013 Alamouti STBC Discuss 2Tx. 1Rx transmit diversity scheme called Alamouti Space Time Block Coding (STBC) Author: Krishna Sankar M Ahuja, Jimmy

Sir.. instead of using BPSK i have used QAM and have removed noise i.e. ideal channel but the BER is comming 0.5..

Is the code designed only for BPSK modulation??
Plz Help..

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