Hello Naazira,
Yes i remember this was discussed previously as well and no conclusion was reached but yeah in my opinion it is the bandwidth of the filter in multiplexer and what confuses us here is that we think the bandwidth should be large enough to accommodate the channels ( be it 4 channels or 8 channels) and we think the bandwidth should be as large as possible but i don’t think it is the case.
Anyway i hope the discussed stuff will help Umer Ashraf in one way or other.
Regards
Burhan