[Show abstract][Hide abstract] ABSTRACT: Long Term Evolution (LTE) is the new standard recently specified by the 3GPP in the next step forward towards fourth generation mobile. This paper presents the main technical features of this standard as well as its performance in terms of peak bit rate and average cell throughput, among others. LTE entails a big technological improvement as compared with previous 3G standard. However, this paper also demonstrates that LTE performance does not fulfils the techni- cal requirements established by ITU-R to classify one radio access technology as a member of the IMT-Advanced family of standards. That is why, an addition to analyzing comparatively these very ambitious goals, this paper describes the proce- dure followed by the 3GPP to cope with these challenging requirements. By means of the de- sign and optimization of some new radio access techniques and a further evolution of the sys- tem, the 3GPP is currently laying down the foun- dations of the future LTE-Advanced standard, the 3GPP candidate for 4G. This paper offers a brief insight into all these technological trends.
[Show abstract][Hide abstract] ABSTRACT: This paper proposes and assesses a new distributed simulation platform for heterogeneous wireless communications. The objective of the ICARUS platform is to investigate cross-layer and cross-system algorithms for heterogeneous beyond 3G systems through a virtual distributed testbed that will allow the research community to share their individual simulation platforms and improve their research capacity through a cooperative simulation effort. This paper discusses the advantages of the ICARUS platform, and demonstrates its capacity to assess heterogeneous beyond 3G systems and reduce the simulation time.