📄 wireless simulation library.htm
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<P><B><FONT size=+3>My Wireless Simulation Library</FONT></B> <BR>
<HR width="100%">
</CENTER><FONT face=Verdana><FONT size=-1>These are some MATLAB functions useful
for simulation of Wireless Communication Systems .... Ok, I know that there is
something called "Communications Library" in MATLAB, but this one is simple to
understand and is for those unfortunate ones who don't have that library with
them.</FONT></FONT>
<P><FONT face=Verdana><FONT size=-1>This isn't complete yet.., but there are
already a lot of useful functions right now.</FONT></FONT>
<P><B><FONT face=Verdana><FONT color=#006600>Modules (so far)
:</FONT></FONT></B>
<P><B><FONT face=Verdana><FONT color=#009900><FONT
size=-1>Modulation/Demodulation :</FONT></FONT></FONT></B>
<P><FONT face=Verdana><FONT size=-1>These Modules are for simulating Digital
Carrier Modulation Techniques like M-PSK, M-FSK, QAM etc.,</FONT></FONT>
<BLOCKQUOTE><B><FONT face=Verdana><FONT size=-1>1. Phase
Encoder/Decoder</FONT></FONT></B> <BR><FONT face=Verdana><FONT
size=-1>(General Purpose Phase encoding/decoding).</FONT></FONT>
<BLOCKQUOTE><FONT face=Verdana><FONT size=-1> - <A
href="http://www.ittc.ku.edu/~rvc/projects/wsim/soc/PhaseEncoder.m">[I,Q]
= PhaseEncoder(ISym,Sym,Ang)</A></FONT></FONT> <BR><FONT face=Verdana><FONT
size=-1> - <A
href="http://www.ittc.ku.edu/~rvc/projects/wsim/soc/PhaseDecoder.m">[OSym] =
PhaseDecoder(RxI,RxQ,Sym,Ang)</A></FONT></FONT></BLOCKQUOTE><B><FONT
face=Verdana><FONT size=-1>2. DQPSK Encoder/Decoder.</FONT></FONT></B>
<BR><FONT face=Verdana><FONT size=-1>(Used in USDC, remember !!)</FONT></FONT>
<BLOCKQUOTE><FONT face=Verdana><FONT size=-1> - <A
href="http://www.ittc.ku.edu/~rvc/projects/wsim/soc/DQPSKEncoder.m">[I,Q]
= DQPSKEncoder(B1,B2)</A></FONT></FONT> <BR><FONT face=Verdana><FONT
size=-1> - <A
href="http://www.ittc.ku.edu/~rvc/projects/wsim/soc/DQPSKDecoder.m">[B1,B2]
= DQPSKDecoder(I,Q)</A></FONT></FONT></BLOCKQUOTE><B><FONT face=Verdana><FONT
size=-1>3. QPSK Encoder/Decoder.</FONT></FONT></B>
<BLOCKQUOTE><FONT face=Verdana><FONT size=-1>- <A
href="http://www.ittc.ku.edu/~rvc/projects/wsim/soc/QPSKEncoder.m">[I,Q]
= QPSKEncoder(B1,B2);</A></FONT></FONT> <BR><FONT face=Verdana><FONT
size=-1>- <A
href="http://www.ittc.ku.edu/~rvc/projects/wsim/soc/QPSKDecoder.m">[B1,B2] =
QPSKDecoder(I,Q);</A></FONT></FONT></BLOCKQUOTE><FONT face=Verdana><FONT
size=-1>% Still to include ....</FONT></FONT> <BR><FONT face=Verdana><FONT
size=-1>1. General routines for FSK and higher-dimensional
modulation.</FONT></FONT>
<P><B><FONT face=Verdana><FONT size=-1>* Notation</FONT></FONT></B>
<BLOCKQUOTE><FONT face=Verdana><FONT size=-1> - I - Inphase
component.</FONT></FONT> <BR><FONT face=Verdana><FONT size=-1> - Q -
Quadrature component.</FONT></FONT> <BR><FONT face=Verdana><FONT
size=-1> - B1,B2 - Input bits that constitute a symbol.</FONT></FONT>
<BR><FONT face=Verdana><FONT size=-1> - Sym,Ang - Represent the mapping
between the symbols</FONT></FONT> <BR><FONT face=Verdana><FONT
size=-1> and the input angles.</FONT></FONT>
<BR><FONT face=Verdana><FONT size=-1> - RxI,RxQ - Represent the I and Q
components of the</FONT></FONT> <BR><FONT face=Verdana><FONT
size=-1> received modulated
symbol.</FONT></FONT> <BR><FONT face=Verdana><FONT size=-1> - ISym,OSym
- Input and Output (demodulated)
Symbols.</FONT></FONT></BLOCKQUOTE></BLOCKQUOTE><B><FONT face=Verdana><FONT
color=#009900><FONT size=-1>Transmit/Receive Filtering
:</FONT></FONT></FONT></B><B><FONT face=Verdana><FONT size=-1></FONT></FONT></B>
<P><FONT face=Verdana><FONT size=-1>These Modules are for simulating the
Transmit and Receive (Matched) Filters in Baseband Digital
Communications.</FONT></FONT> <BR>
<BLOCKQUOTE><B><FONT face=Verdana><FONT size=-1>1.
TransmitFilter</FONT></FONT></B>
<BLOCKQUOTE><FONT face=Verdana><FONT size=-1>- <A
href="http://www.ittc.ku.edu/~rvc/projects/wsim/soc/TransmitFilter.m">[I_bb,
Q_bb] = TransmitFilter(I,Q,h,Ns_s)</A></FONT></FONT></BLOCKQUOTE>
<P><BR><B><FONT face=Verdana><FONT size=-1>2. ReceiveFilter</FONT></FONT></B>
<BLOCKQUOTE><FONT face=Verdana><FONT size=-1> - <A
href="http://www.ittc.ku.edu/~rvc/projects/wsim/soc/ReceiveFilter.m">[I,Q] =
ReceiveFilter(I_bb,Q_bb,h,Ns_s)</A></FONT></FONT></BLOCKQUOTE>
<P><BR><FONT face=Verdana><FONT size=-1>* Notation</FONT></FONT>
<BLOCKQUOTE><FONT face=Verdana><FONT size=-1> - I_bb, Q_bb - Baseband
waveforms.</FONT></FONT> <BR><FONT face=Verdana><FONT size=-1> - h -
Tx/Rx (FIR) Filter coefficients.</FONT></FONT> <BR><FONT face=Verdana><FONT
size=-1> - Ns_s - Num Samples per Symbol.</FONT></FONT>
<BR> </BLOCKQUOTE><B><FONT face=Verdana><FONT size=-1>3. Raised Cosine
Filtering</FONT></FONT></B>
<BLOCKQUOTE><FONT face=Verdana><FONT size=-1> - <A
href="http://www.ittc.ku.edu/~rvc/projects/wsim/soc/SqRCFilter.m">[h] =
SqRCFilter(N, Alpha, Tb, Fs)</A></FONT></FONT></BLOCKQUOTE>
<P><BR><FONT face=Verdana><FONT size=-1>* Notation</FONT></FONT>
<BLOCKQUOTE><FONT face=Verdana><FONT size=-1> - h - SqRC (FIR) Filter
Coefficients.</FONT></FONT> <BR><FONT face=Verdana><FONT size=-1> -
Alpha - Roll-Off factor.</FONT></FONT> <BR><FONT face=Verdana><FONT
size=-1> - Tb - Bit Duration.</FONT></FONT></BLOCKQUOTE></BLOCKQUOTE>
<P><BR><B><FONT face=Verdana><FONT color=#009900><FONT size=-1>Channel
Simulators :</FONT></FONT></FONT></B><FONT face=Verdana><FONT
size=-1></FONT></FONT>
<P><FONT face=Verdana><FONT size=-1>These Modules are for simulating the channel
commonly occuring in Digital Communications.</FONT></FONT>
<BLOCKQUOTE><FONT face=Verdana><FONT size=-1>1. AWGN Channel</FONT></FONT>
<BLOCKQUOTE><FONT face=Verdana><FONT size=-1> - <A
href="http://www.ittc.ku.edu/~rvc/projects/wsim/soc/AWGNChannel.m">[Out] =
AWGNChannel(In, No);</A></FONT></FONT></BLOCKQUOTE>
<P><BR><FONT face=Verdana><FONT size=-1>* Notation</FONT></FONT>
<BLOCKQUOTE><FONT face=Verdana><FONT size=-1> - No - Noise
PSD.</FONT></FONT></BLOCKQUOTE>
<P><BR><FONT face=Verdana><FONT size=-1>2. Rayleigh Fading Channel
(General Model)</FONT></FONT>
<BLOCKQUOTE><FONT face=Verdana><FONT size=-1>- <A
href="http://www.ittc.ku.edu/~rvc/projects/wsim/soc/GenerateRayleighFade.m">[r]
= RayleighFader(Ns, P, Nr, Dr);</A></FONT></FONT></BLOCKQUOTE>
<P><BR><FONT face=Verdana><FONT size=-1>* Notation</FONT></FONT>
<BLOCKQUOTE><FONT face=Verdana><FONT size=-1>- r - The Rayleigh
Envelope.</FONT></FONT> <BR><FONT face=Verdana><FONT size=-1>- Ns - Number
of samples of the Rayleigh fading process.</FONT></FONT> <BR><FONT
face=Verdana><FONT size=-1>- P - Avg Power of the Rayleigh
Envelope.</FONT></FONT> <BR><FONT face=Verdana><FONT size=-1>- Nr -
Numerator Coeffecients of Spectral Shaping filter.</FONT></FONT> <BR><FONT
face=Verdana><FONT size=-1>- Dr - Denominator Coeffecients of Spectral
Shaping filter.</FONT></FONT></BLOCKQUOTE></BLOCKQUOTE><FONT face=Verdana><FONT
size=-1>--- To Come ---</FONT></FONT> <BR> <BR> </BODY></HTML>
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