At recent major international conferences on wireless communications,
there have been several sessions on beyond third generation (3G) or fourth
generation(4g)mobilecommunicationssystems,wheremodulation/demod-
ulation and multiplexing/multiple access schemes related to multicarrier
techniques have drawn a lot of attention. We often met at the conference
venuesandrealizedthatnobookcoveredthebasicsofmulticarriertechniques
to recent applications aiming at the 4g systems. Therefore, we decided to
write a book on multicarrier techniques for 4g mobile communications
systems.
Fourth Generation (4g) wireless communication systems aim to allow peak data
rates in the range of 1 Gbps for nomadic access and 100 Mbps for vehicular mobil-
ity. 4g aims to support current and emergent multimedia services, such as mobile
TV, social networks and gaming, high-definition television and video telecon-
ference, multimedia messaging service, using the All-over IP concept and with
improved quality of service.
This book paves the path toward fourth generation (4g) mobile communica-
tion by introducing mobility in heterogeneous IP networks with both third
generation (3G) and wireless local area networks (WLANs), which is seen as
one of the central issues in the becoming 4g of telecommunications networks
and systems. This book presents a thorough overview of 3G networks and
standards and discusses interworking and handover mechanisms between
WLANs and the Universal Mobile Telecommunication System (UMTS).
