A Comparison of Compressed and Uncompressed Transmission Modes

In this paper we address the problem of host to host communication. In particular, we discuss the issue of efficient and adaptive transmission mechanisms over possible physical links. We develop a tool for making decisions regarding the flow of control sequences and data from and to a host. The issue of compression is discussed in details, a decision box and an optimizing tool for finding the appropriate thresholds for a decision are developed. Physical parameters like the data rate, bandwidth of the communication medium, distance between the hosts, baud rate, levels of discretization, signal to noise ratio and propagation speed of the signal are taken into consideration while developing our decision system. Theoretical analysis is performed to develop mathematical models for the optimization algorithm. Simulation models are also developed for testing both the optimization and the decision tool box. Comments University of Pennsylvania Department of Computer and Information Science Technical Report No. MSCIS-91-41. This technical report is available at ScholarlyCommons: http://repository.upenn.edu/cis_reports/411 A Comparison Of Compressed and Uncompressed Transmission Modes MS-CIS-91-41 GRASP LAB 266 Tarek M. Sobh J affar Re hman Department of Computer and Information Science School of Engineering and Applied Science University of Pennsylvania Philadelphia, PA 19104-6389