The unrelenting progress of instant communications maintains to elevate new study and improvement difficulties that require remarkable interactions between conversation engineers. specifically, experts in transmission and experts in networks needs to usually go each one other's obstacles. this is often very true for CDMA, an entry procedure that's being largely authorised as a process answer for next-generation cellular mobile platforms, however it extends to different method facets besides. significant demanding situations lie forward, from the layout of actual and radio entry to community structure, source administration, mobility administration, and ability and function facets. numerous of those facets are addressed during this quantity, the fourth within the edited sequence on Multiaccess, Mobility and Teletraffic for instant Communications. It comprises papers chosen from MMT'99, the 5th Workshop hung on those themes in October 1999 in Venezia, Italy. the point of interest of this workshop sequence is on making a choice on, offering, and discussing the theoretical and implementation concerns serious to the layout of instant verbal exchange networks. extra particularly, those matters are tested from the perspective of the impression every one of them could have at the others. particular emphasis is given to the evolutionary traits of common instant entry and software program radio. functionality advancements completed through spectrally effective codes and shrewdpermanent antennas in experimental GSM testbeds are awarded. a number of contributions tackle serious matters relating to multimedia prone for Third-Generation cellular Radio Networks starting from excessive expense information transmission with CDMA expertise to source allocation for built-in Voice/WWW traffic.