hi Anil nice to see u here in this forum
Well regarding your Question
the signal comes to our transmission Equipment then it goes to BOI card where the DSP process takes place
after that the BB2X send the signal to the TRX part, where the trx unit filters it , raises it freq. and amplify it
then it goes to combiner and the n after that to duplexer unit
after that it travels to antenna
all this happen in downlink i hope this get some clear pic in ur mind
if any thing else u can directly contact me as u have my email id
regards
shaleen
HUGHES