<< Channel simulation Channel simulation chn_simu >>

comm_tbx >> Channel simulation > awgn

awgn

Simulation of channel with Additive White Gaussian Noise (AWGN)

Parameters

x:

input signal

sigma:

square root of noise power

Description

Compute $y = x + n$, with $n: N(0,\sigma)$. If x is a complex signal, or if complex noise is specifically specified, then noise (with same energy) is also added on the imaginary axis. So be carefull, with complex noise, the noise power is two times more than for real noise.

Examples

x = nrz(ts01(10),4);
y = awgn(x,0.1);
plot(x,'b'); plot(y,'g');

See also

Authors


Report an issue
<< Channel simulation Channel simulation chn_simu >>