Signaling and multiple access techniques for ultra wideband 4G wireless communication systems

Due to the demanding performance requirements for fourth-generation wireless systems, several technologies have been considered for replacing third-generation wireless systems. Potential technologies for fourth-generation wireless systems are ultra wideband, orthogonal frequency-division multiplexin...

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Bibliographic Details
Published in:IEEE personal communications 2005-04, Vol.12 (2), p.46-55
Main Authors: Woo Cheol Chung, August, N.J., Dong Sam Ha
Format: Article
Language:English
Subjects:
Access protocols
Antennas
Bit rate
Channels
Communication system security
Hardware
Media Access Protocol
Modulation
Modulation coding
Multiple access
Multiplexing
Physical layer
Signal processing
Standardization
Ultra wideband technology
Wideband
Wireless communication
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Summary:Due to the demanding performance requirements for fourth-generation wireless systems, several technologies have been considered for replacing third-generation wireless systems. Potential technologies for fourth-generation wireless systems are ultra wideband, orthogonal frequency-division multiplexing, and multi-input multi-output antenna systems. Ultra wideband is of particular interest for fourth-generation wireless applications that emphasize short range, high data rate, and/or low power. We focus on ultra wideband radio due to its unique advantages: high data rate, low power, and resilience to multipath fading effects. We discuss the signal characteristics, channel propagation, modulation schemes, and hardware implementation. Two major approaches to ultra wideband signaling, impulse-based and multicarrier ultra wideband, are elaborated. Furthermore, two categories of multiple access are also considered: distributed and centralized.
ISSN:1536-1284
1070-9916
1558-0687
DOI:10.1109/MWC.2005.1421928