how to implement Lookup Table in NS-2

hi all,

need some advise on how to implement lookup table in NS-2.
for example: a lookup table for IEEE 802_11Ext module, which has details such as modulation type, SNR level, and BER.

So based on SINR measurement from NS-2, instead of using the SINRThresh_ value in current module, the probability of reception is based on the BER.

I’m using NS-2.33 version, I saw that there is a separate folder outside ~ns/ named “dei80211mr-1.1.4” and it has some lookup implementation using dll (dynamic library?), but not sure how to applies this same concept in the official NS-2.33 folder.

Please help.

Many thanks!