I want to estimate a channel based on LTE 3GPP EVA with given power delay profile (set of average power and delay of channel taps).
tau = [0, 30e-9, 150e-9, 310e-9, 370e-9, 710e-9, 1090e-9, 1730e-9, 2510e-9]; % relative delay (s) pdb = [0, -1.5, -1.4, -3.6, -0.6, -9.1, -7.0, -12.0, -16.9]; % avg. power (dB)
Unfortunately, the relative delays of channel taps are not multiples of my sampling time Ts=3.3333e-07 s. Here, I assumed the number of taps to be estimated is Ds/Ts, where Ds is the delay spread.
First of all, please let me know if there is anything wrong in my approach. Also, How should I measure my estimation error in this case? Should I compare my estimates with channel sampled at my sampling rate, or should I subtract the reconstructed frequency response of estimate and the original one? Anyhow, due to the difference in the sampling time and delays, there is an intrinsic error in my estimation no matter how I measure it.
Thanks in advance :)