Mobile Radio Evolution

3G Radio Access Evolution -- HSPA and LTE for Mobile Broadband --

Roughly eight years have passed since the first commercial deployment of 3G mobile communication based on the WCDMA radio-access technology developed by 3GPP∗. Since then, the 3GPP radio-access technologies have gone through several steps of evolution and improvements, further boosting their capabilities in terms of the services that can be provided as well as the basic system performance. In p...

Future Trends of Mobile and Personal Communications Evolution of Mobile Radio Communications

FUTURE TRENDS OF MOBILE AND PERSONAL COMMUNICATIONS (Invited Paper) Theodore S. Rappaport Mobile & Portable Radio Research Group Bradley Department of Electrical Engineering Virginia Tech Blacksburg, VA 24061-0350 email: [email protected] This tutorial paper provides an overview of the fundamental concepts used in cellular radio communications, and illustrates the likely evolution and growth of t...

Packetizing voice for mobile radio

Present cellular systems use conventional analog fm techniques to transmit speech.' A major source of impairment in cellular systems is the Rayleigh fades [11.[21 that cause the speech signal to be interrupted with noise bursts in the form of "pops" and "clicks". In digital systems, these fades appear as clustered bit errors. Since adaptive digital codes can be designed to be more robust to bit...

Multicluster, mobile, multimedia radio network

Multicluster, mobile, multimedia radio network

A multi-cluster, multi-hop packet radio network architecture for wireless adaptive mobile information systems is presented. The proposed network supports multimedia traffic and relies on both time division and code division access schemes. This radio network is not supported by a wired infrastructure as conventional cellular systems are. Thus, it can be instantly deployed in areas with no infra...