Spectrum demand for systems beyond IMT‐2000 based on data rate estimates

摘要: In different regions, research activities on systems beyond third generation mobile communication started already around 1999. The major drivers for these are the increasing demand personal communications with respect to performance, applications, traffic and easy use including involving machines. From user perspective, mobility enforces in business private sector. ITU-R WP8F, ITU-T SSG bodies like WWRF currently working vision of IMT-2000 global basis cooperation defining basic requirements. New elements access (up 100 Mbps peak cell capacity) nomadic/wireless local area 1 Gbps being discussed. These requirements result a huge amount needed spectrum. this paper, impact spectrum new broadband element is investigated estimated data rate from perspective. For that purpose, radio interface described generic form based modified Shannon channel capacity formula obtain generalized results independent particular concept. With relation between cluster size, carrier/interference-ratio coverage system throughput calculated closed case fixed adaptive modulation coding. according not considered here. investigations simplified concepts without considering advanced antenna, scheduling network deployment concepts. Copyright © 2003 John Wiley & Sons, Ltd.