6G Wireless
Systems: Vision, Requirements, Challenges, Insights, and
Opportunities
Mobile communications
have been undergoing a generational change every ten years or
so. However, the time difference between the so-called “G’s” is
also decreasing. While fifth-generation (5G) systems are
becoming a commercial reality, there is already significant
interest in systems beyond 5G, which we refer to as the sixth
generation (6G) of wireless systems. In contrast to the already
published papers on the topic, we take a top-down approach to
6G. More precisely, we present a holistic discussion of 6G
systems beginning with lifestyle and societal changes driving
the need for next-generation networks. This is followed by a
discussion into the technical requirements needed to enable 6G
applications, based on which we dissect key challenges and
possibilities for practically realizable system solutions across
all layers of the Open Systems Interconnection stack (i.e., from
applications to the physical layer). Since many of the 6G
applications will need access to an order-of-magnitude more
spectrum, utilization of frequencies between 100 GHz and 1 THz
becomes of paramount importance. As such, the 6G ecosystem will
feature a diverse range of frequency bands, ranging from below 6
GHz up to 1 THz. We comprehensively characterize the limitations
that must be overcome to realize working systems in these bands
and provide a unique perspective on the physical and higher
layer challenges relating to the design of next-generation core
networks, new modulation and coding methods, novel
multiple-access techniques, antenna arrays, wave propagation,
radio frequency transceiver design, and real-time signal
processing. We rigorously discuss the fundamental changes
required in the core networks of the future, such as the
redesign or significant reduction of the transport architecture
that serves as a major source of latency for time-sensitive
applications. This is in sharp contrast to the present
hierarchical network architectures that are not suitable to
realize many of the anticipated 6G services. While evaluating
the strengths and weaknesses of key candidate 6G technologies,
we differentiate what may be practically achievable over the
next decade, relative to what is possible in theory. Keeping
this in mind, we present concrete research challenges for each
of the discussed system aspects, providing inspiration for what
follows.
Read more at 6G Wireless Systems
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TACS is
a leading top consultancy in the field of nth Generation Fixed
or Mobile Wireless Systems and Networks.
TACS
consultants are the first inventors of fixed or mobile packet
radio structures in the world for 2G, 3G, 4G, 5G and 6G wireless
systems.
TACS is
Pioneer and Innovator of many Communication Signal Processors,
Optical Modems, Radio Modems, 5G Modems, 6G Modems, Satellite
Modems, PSTN Modems, Cable Modems, PLC Modems, and more..
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TACS
- Delivers the insight and vision
on technology for strategic decisions on 6G.
- Assesses technologies and standards and develops
architectures for 6G.
- Provides
the energy and experience of world-wide leading innovators and experts in
6G.
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