Need MATLAB Implementation for OFDM Communication Systems in Continuous-Time?

[EngWiPy]

Hello all,

Does it occur that anyone here working on OFDM communication systems? I need a MATLAB implementation of such systems in the continuous time. I will provide the math derivations if requested.

Thanks

 

[Greg Bernhardt]

I'm sorry you are not finding help at the moment. Is there any additional information you can share with us?

 

[EngWiPy]

I'm sorry you are not finding help at the moment. Is there any additional information you can share with us?

Thanks for bringing up this thread.

Usually, for communication systems, simulations are done in discrete-time. It is easier to understand, and easier to simulate. However, in my case in particular, this discrete-time equivalence doesn't work perfectly, and hence I need to do the simulations in the continuous-time, as it is transmitted in practice.

In particular, I want to generate this received signal in MATLAB:

$$v(t)=\sum_{k=0}^{K-1}d_ke^{j2 \pi \frac{k}{T}t}\sum_{p=1}^{N_p}h_pe^{-j2 \pi f_k\tau_p}g(t-\tau_p)$$

where fk=f0+(k/T) is the kth subcarrier, T is the OFDM symbol duration, dk are the transmitted symbols, K is the number of subcarriers, hp are the path gains, taup are the paths delays, Np is the number of paths, and g(t) is a rectangular pulse of duration T+Tg and magnitude unity, where Tg is a guard interval.

This equation is obtain by transmitting the signal:

$$s(t)=\Re\{\sum_{k=0}^{K-1}d_ke^{j2 \pi f_k t}g(t)\}$$

over the channel:

$$h(\tau)=\sum_{p=1}^{N_p}h_p\delta(\tau-\tau_p)$$

where delta is the dirac delta function.

Any help is much appreciated.

Thanks