Thank you for your response. Considering the timeline of GSoC, I am more interested in implementing channel models. That way I can stick to the software domain to test and validate my work. Also, I have frequently used Rayleigh/Ricean/Nakagami models in MATLAB and I am familiar with the math behind them.
The available GR channel model blocks in the following link use addition of sinusoids and filters to approximate a channel response. http://gnuradio.org/doc/doxygen-3.7/page_channels.html I found a more accurate implementation of Rayleigh and Rician fading on GNU radio on this link: https://www.cgran.org/browser/projects/usrp_fading_simulator/trunk/src/lib?rev=68 It follows this paper: http://volta.sdsu.edu/~amir/Alimohammad09aCompact.pdf A number of other fading channels can be implemented as GR blocks. 1. Log-normal shadowing can be implemented as standard GR block to model Large scale fading and it finds its use in a number of mobility related applications. I have found a paper relevant to its 2D simulation: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1247814 2. Nakagami-m channel: Figure 3 of the following paper describes how correlated samples of a nakagami-m faded channel can be generated http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=01412063 I couldn't find a GR based implementation of a basic path loss model. A simple block implementation for path loss is necessary- for various environments with a distance parameter (source-destination) and a parameter of path loss exponent (range 2-5). If the above mentioned channel impairments are successfully implemented, they encapsulate Rayleigh, Rician, Suzuki, Composite Rician-Shadowing environments. Please give me your opinion about these. Is there any other specific model i should be focusing on? What will be a sufficient goal for my GSoC? I'm not sure if I am aiming too high at this point :). -- View this message in context: http://gnuradio.4.n7.nabble.com/GSoC-2014-Wireless-Network-in-the-loop-tp46822p46913.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
