rf transmitters and receivers

hi all
i am looking for rf transmitters and receivers using 16 QAM modulation type
any body knows a company so i can contact?
does any body think that i would need any other thing.. i mean for example would the receiver would include the bpf at its front end?
please help me..
thanks in advance..

What do you need to do exactly send the block diagram and system specs you hope to meet.
BR
Ahmad,

i have 2 binary streams I and Q , i want to modulate them using 16 QAM , i.e both on same carrier which is 2.4 ghz but the carriers are orthogonal , i.e sin & cos
i hope that i cleared it..

That makes no sense. If you have two independent binary serial streams, you would only need 4-QAM (or in other words QPSK).

That is, unless the two streams have independent random clock rates, in which case you could never demodulate the resulting QAM pattern.