Radio Access Technologies for Broadband Mobile Communications

Radio Broadcast Networks enable Broadband Internet Access for Mobile Users

The ongoing propagation of Internet information services like WWW increases the desire for broadband multimedia information and communication services also for mobile users. Therefore wireless transmission media with high bandwidth for data services are needed. Currently used systems like GSM or even the future UMTS are lacking in bandwidth and flexibility for the effective provision of broadba...

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...

WDCDMA for UMTS – Radio Access For Third Generation Mobile Communications

The Future Generations of Mobile Communications Based on Broadband Access Technologies

The forthcoming mobile communication systems are expected to provide a wide variety of services, from high-quality voice to high-definition videos, through high-data-rate wireless channels anywhere in the world. The high data rate requires broad frequency bands, and sufficient broadband can be achieved in higher frequency bands such as microwave, Ka-band, and millimeter-wave. Broadband wireless...

Broadband Fixed Radio Access

The requirements for the digital signal processing of broadband wireless access systems are investigated. A discussion of different multiple access schemes considering the boundary conditions of future services is given, resulting in a Time Division Multiple Access (TDMA) proposal. The dominant TDMA component is the adaptive equalizer. Different eligible equalizer structures and adaptation algo...