- #1
JasonHathaway
- 113
- 0
Hi everyone,
I'm trying to simulate an OFDM following a few steps, and I'm stuck at the first:
The first step:
You have a channel with independent zero mean complex Gaussian taps along with exponentially decaying power profile E{|hk|2|}=e-k/3 with k ∈ [0,21]
First of all, does this notation E{|hk|2|}=e-k/3 mean that "the expected value of the channel gain/s is the variance σ=e-k/3"? And is it σ2 or just σ?
And also, what are exactly the "taps"?
Anyway, I assumed the variance σ=e-k/3, so here is my MATLAB code for the first step:
I'm trying to simulate an OFDM following a few steps, and I'm stuck at the first:
The first step:
You have a channel with independent zero mean complex Gaussian taps along with exponentially decaying power profile E{|hk|2|}=e-k/3 with k ∈ [0,21]
First of all, does this notation E{|hk|2|}=e-k/3 mean that "the expected value of the channel gain/s is the variance σ=e-k/3"? And is it σ2 or just σ?
And also, what are exactly the "taps"?
Anyway, I assumed the variance σ=e-k/3, so here is my MATLAB code for the first step:
Code:
N=22;
k=0:21;
sigma=exp(-k/3);
h=(rand(N,1)+j*rand(N,1))*sigma;