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12
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Introduction
Current institution
Publications
Publications (12)
In this paper, a multiple-input-multiple-output (MIMO) extension for a third-generation (3G) wireless system is described. The integration of MIMO concepts within the existing UMTS standard and the associated space-time RAKE receiver are explained. An analysis is followed by a description of an actual experimental MIMO transmitter and receiver arch...
Currently in development, numerous geolocation technologies can
pinpoint a person's or object's position on the Earth. Knowledge of the
spatial distribution of wireless callers will facilitate the planning,
design, and operation of next generation broadband wireless networks.
Mobile users will gain the ability to get local traffic information and
d...
The transmission of still images over wireless channels is an
exercise in tradeoffs. For bandwidth efficiency, a high source
compression rate is required. However, the transmission must be robust
towards channel errors since wireless channels are subject to fading.
These are conflicting requirements. High source compression rates result
in images t...
The provisioning of quality of service by means of statistical multiplexing has been an alluring research idea for the last decade of teletraffic research. In this paper we question the efficiency of statistical bitrate service which is the standardized representation of this operational mode for ATM networks. Our argument is that the amount of inf...
The focus of this article is high altitude aeronautical platforms
(HAAPs) such as airships, planes, helicopters, or some hybrid salutions
which could operate at stratospheric altitudes for significant periods
of time, be low-cost, and be capable of carrying sizable, multipurpose
communications payloads. Of particular interest are ways to implement...
Video has been touted as the information type that will justify
massive investments in public broadband multimedia networks, but it is
not clear that it will serve that purpose. Applications that video
enables are offered competitively by other means, and the added utility
in those that video enhances might not justify the extra cost of
offering it...
Packet error probability is the key parameter in evaluating the
performance of ARQ schemes, in terms of waiting time to receive a data
packet, and system throughput. The authors present an analysis of the
packet error probability for two modulation schemes, BFSK and BPSK, when
uncoded packets are transmitted over the meteor burst channel using a
fi...
Carefully selected traffic generators enable accurate simulation of integrated broadband networks. Simulation tools are crucial in analysis of traditional as well as new protocols and algorithms designed for optimum network management in the era of high-speed integrated ATM-based networks. In this paper, we survey proposed ATM traffic models and tr...
Using the probabilistic models for meteor burst channel
parameters, expressions are derived for performance characteristics of
an automatic-repeat-request (ARQ) communications system. Performance
measures such as throughput rate, waiting time to receive a message
correctly, and probability of successful message delivery within some
specified time a...
Thesis (Ph. D.)--City University of New York, 1989. (Graduate Faculty in Engineering). Includes bibliographical references (leaves 125-130).
