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MedicineStress Physiology

Fractal Point Process and Queueing Theory and Application to Communication Networks

Authors: Gregory W. Wornell; MASSACHUSETTS INST OF TECH CAMBRIDGE RESEARCH LAB OF ELECTRONICS
Abstract:
In the past year, our broad program of research has continued to explore efficient solutions fundamental problems of communication for wireless and wired networks, exploiting interrelated perspectives from communication theory, information theory, signal processing theory, and control theory. As part of this work novel applications chaos and fractal geometry are also being explored. As one component of the research, we have continued to develop novel multiscale methods for analyzing packet switched data networks with bursty traffic exhibiting fractal behavior. These methods have also led to the development of complementary new multiscale traffic management strategies for more efficiently routing and serving packets in such networks. These new results are described in detail in the Ph.D. thesis of Warren Lam completed during this reporting period. In other aspects of the ongoing research, we developed additional results on the use of nonlinear dynamics, chaos, and solitons in the design of innovative analog error protection codes for communications applications, and developed new very low complexity adaptive coding techniques for exploiting the availability of feedback in unknown, time varying wireless communication networks. As a final component of the research, we have continued to develop promising new and bandwidth-efficient classes of time, frequency, and space diversity strategies for single and multiuser wireless communication in multipath fading environments.

Limitations: APPROVED FOR PUBLIC RELEASE
Description: Annual rept. 1 Jun 96-31 May 97
Pages: 19
Report Date: MAY 97
Contract Number: N00014-96-1-0930
Report Number: A780623
Keywords relating to this report:
*COMMUNICATIONS NETWORKS
*FRACTALS
*QUEUEING THEORY
ALGORITHMS
ANALOG SYSTEMS
ANTENNA ARRAYS
ANTENNAS
AVAILABILITY
BEHAVIOR
COMMUNICATION AND RADIO SYSTEMS
CONTROL THEORY
DATA TRANSMISSION SYSTEMS
DYNAMICS
EFFICIENCY
ENVIRONMENTS
EQUALIZATION
ERROR CORRECTION CODES
FADING_ELECTROMAGNETIC WAVES_
FEEDBACK
GEOMETRY
INFORMATION THEORY
MULTIPATH TRANSMISSION
NETWORKS
NONLINEAR SYSTEMS
PACKET SWITCHING
PROTECTION
RECURSIVE FUNCTIONS
SIGNAL PROCESSING
SOLITONS
SOLUTIONS_GENERAL_
SPACE DIVERSITY COMMUNICATIONS
STRATEGY
THEORY
THESES
TRANSMITTERS
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