In this paper

we propose a Code Division Multiple Access（ CDMA） based system to providevariable rate services by varying the number of codes assigned to a user. For the macro-

micro-

picrocell chan-nel models

an approximation to the bit error probability in different environments is given which depends only onthe first and second order moments of the multipath energies. We then analysize the BER’ S performance of asystem with integrated voice and video traffics.