Mobile telecommunications such as car phones, paging services, cordless telephones, as well radio data communications, have only begun to influence today's business and personal life styles. This volume is focused on the latest progress in radio network technology and the bottlenecks in the evolution of Universal Personal Communication Systems (UPCS), including R&D topics and DS-CDMA personal wireless systems. It is the result of the proceedings of a conference on Personal, Indoor and Mobile Radio Communications (PIMRC '94) / Wireless Computer Networks (WCN) held on 18-25 September, 1994.