syms2bits.m File Reference

Functions
	CN (0, nvar)
	switch (MOD_ORDER) case 2 % BPSK rx_data
demod_fcn_16qam, syms_eq	arrayfun ()
id	msb ()

Variables
Author(s) Create channel if	awgn
	h = sqrt(hvar/2).*(randn(n_syms, n_ant) + 1i*randn(n_syms, n_ant))
end Add noise	nvar = mean(mean( abs(syms).^2))/ 10^(0.1*snr)
	w = sqrt(nvar/2).*(randn(n_syms,1) + 1i*randn(n_syms,1))
	rx_syms = h.*syms + w
Equalize with *known *	channel
Demodulate	demod_fcn_bpsk = @(x) double(real(x)>0)
	demod_fcn_qpsk = @(x) double(2*(real(x)>0) + 1*(imag(x)>0))
	demod_fcn_16qam = @(x) (8*(real(x)>0)) + (4*(abs(real(x))<0.6325)) + (2*(imag(x)>0)) + (1*(abs(imag(x))<0.6325))
	demod_fcn_64qam
case QPSK	rx_data = arrayfun(demod_fcn_qpsk, syms_eq)
end Do your	selves
This is a matrix now	bits_matrix = bits_matrix(:,1:end-1)
	bits = bits_matrix(:)

Function Documentation

arrayfun()

demod_fcn_16qam, syms_eq arrayfun ( )

virtual

CN()

CN	(	0	,
		nvar
	)

msb()

id msb ( )

virtual

switch()

switch

(

MOD_ORDER

)

Variable Documentation

awgn

Author (s) Create channel if awgn

Initial value:

== 0
    hvar = 1

bits

bits = bits_matrix(:)

bits_matrix

This is a matrix now bits_matrix = bits_matrix(:,1:end-1)

channel

Equalize with* known* channel

demod_fcn_16qam

demod_fcn_16qam = @(x) (8*(real(x)>0)) + (4*(abs(real(x))<0.6325)) + (2*(imag(x)>0)) + (1*(abs(imag(x))<0.6325))

demod_fcn_64qam

demod_fcn_64qam

Initial value:

= @(x) (32*(real(x)>0)) + (16*(abs(real(x))<0.6172)) + ... 
    (8*((abs(real(x))<(0.9258))&&((abs(real(x))>(0.3086))))) + ...
    (4*(imag(x)>0)) + (2*(abs(imag(x))<0.6172)) + ...
    (1*((abs(imag(x))<(0.9258))&&((abs(imag(x))>(0.3086)))))

demod_fcn_bpsk

Demodulate demod_fcn_bpsk = @(x) double(real(x)>0)

demod_fcn_qpsk

demod_fcn_qpsk = @(x) double(2*(real(x)>0) + 1*(imag(x)>0))

h

else h = sqrt(hvar/2).*(randn(n_syms, n_ant) + 1i*randn(n_syms, n_ant))

nvar

end Add noise nvar = mean(mean( abs(syms).^2))/ 10^(0.1*snr)

rx_data

case QPSK rx_data = arrayfun(demod_fcn_qpsk, syms_eq)

rx_syms

rx_syms = h.*syms + w

selves

end Do your selves

w

w = sqrt(nvar/2).*(randn(n_syms,1) + 1i*randn(n_syms,1))