Journal ArticleDOI
Taking the challenge of multiple access for third-generation cellular mobile radio systems-a European view
P.W. Baier,Peter Jung,Anja Klein +2 more
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The requirements for third-generation cellular mobile radio systems such as Universal Mobile Telecommunications System (UMTS) and Future Public Land Mobile Telecommunications system (FPLMTS), which has been named International Mobile Telecommunications after the year 2000 (IMT-2000) are presented concisely.Abstract:Â
In Europe, the challenge of the design of third-generation cellular mobile radio systems has been taken numerous research and development activities in this field have been started. The authors try to give an overview of the European activities in this field. The article is organized in two parts. In the first part, the requirements for third-generation cellular mobile radio systems such as Universal Mobile Telecommunications System (UMTS) and Future Public Land Mobile Telecommunications System (FPLMTS), which has been named International Mobile Telecommunications after the year 2000 (IMT-2000) are presented concisely. Also, the importance and challenge of the multiple access design for such third-generation cellular mobile radio systems is explained. In the second part, numerous European research activities with focus on the multiple access design for third-generation cellular mobile radio systems are reviewed.read more
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Journal ArticleDOI
Distributed Linear Parameter Estimation over Wireless Sensor Networks
A.K. Das,Mehran Mesbahi +1 more
TL;DR: This paper considers distributed linear least squares (LLS) and Bayesian minimum mean square error (BMMSE) parameter estimation over sensor networks and proposes distributed iterative algorithms that asymptotically converge to the centralized solutions.
Journal ArticleDOI
Orthogonal frequency-division multiplex transmission of H.263 encoded video over highly frequency-selective wireless networks
TL;DR: The video performance of a 155-Mbps wireless asynchronous transfer mode (WATM) proposal and that of a 2-Mbps Universal Mobile Telecommunications System (UMTS) concept is evaluated for a range of low- to high-quality video application scenarios, various propagation conditions, and video bit rates using the H.263 video codec.
Journal ArticleDOI
Power-induced time division on asynchronous channels
John M. Rulnick,Nicholas Bambos +1 more
TL;DR: This work addresses the question of whether a TDMA-like state can be induced on asynchronous channels in such a way as to reduce interference and energy consumption, and shows how autonomous power management may be used as a mechanism to induce a form of time division.
Reference EntryDOI
Time Division Multiple Access (TDMA)
TL;DR: It shall be motivated that TDMA, being a means of medium access control (MAC), facilitates both a high spectral capacity and a reasonably low implementation complexity.
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Journal ArticleDOI
Source-controlled channel decoding
TL;DR: A modification of the Viterbi decoding algorithm (VA) for binary trellises which uses a priori or a posteriori information about the source bit probability for better decoding in addition to soft inputs and channel state information is proposed.
Journal ArticleDOI
Design study for a CDMA-based third-generation mobile radio system
TL;DR: In this article, the authors focus on a CDMA design study for future third-generation mobile and personal communication systems such as FPLMTS and UMTS and adopt a rigorous top-down approach starting from the most essential objectives and requirements of universal 3G mobile systems.
Design study for a CDMA-based third-generation mobile radio system
TL;DR: In this paper, a CDMA design study for future third-generation mobile and personal communication systems such as FPLMTS and UMTS is presented, focusing on high flexibility with respect to the implementation of a wide range of services and service bit rates including variable rate and packet services.
Journal ArticleDOI
The Origins of Spread-Spectrum Communications
TL;DR: The WHYN, Hush-Up, BLADES, F9C-A/Rake, CODORAC, and ARC-50 systems are featured, along with a description of the prior art in secure communications, and introductions to other early spreadspectrum communication efforts.
Journal ArticleDOI
Bandlimited quasi-synchronous CDMA: a novel satellite access technique for mobile and personal communication systems
TL;DR: A novel access technique based on bandlimited quasi-synchronous CDMA (BLQS-CDMA) is described, showing all the advantages of synchronizing conventional direct sequence CDMA to drastically reduce the effect of self-noise.