Channel gain from channel estinmation

In OFDM MIMO Channel estimation, After receiving the ofdm data, we compute "channel estimation" using LMS or MMSE.

From this estimated chan coeff, How do we estimate the "channel gains" and go for further channel selection ?

The channel estimation results are complex. eg. as 1x256 data consisting of data like 1.22 + j 0.667

[Mathieu NOE]

hello

i am not expert in OFDM, but the channel gain is a vector of gain vs frequency (i assume).

I assume also that channel selection is based on which channel has the highest gain , so IMHO you should take the max of absolute value of this vector.

bye

[Madhumitha Jayaram]

thank you

Answer 1

[Binaya]

Hi Madhumitha

To estimate channel gains from channel coefficients, you can compute the magnitudes using the "abs" function. This will provide the channel gains for each channel. After obtaining the channel gains, apply a threshold to select the channel(s) that meet your requirements.

I hope this answers your query.