theory. In addition to the above, this JOURNAL ON SELECTED AREAS IN COMMUNICATIONS contains papers pertaining to analog and digital signal processing and modulation, audio and video encoding techniques, the theory and design of transmitters, receivers, and repeaters for communications via optical and sonic media, the design and analysis of computer communications systems, and the development of communication software. Contributions of theory enhancing the understanding of communication systems

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... nd techniques are included, as are discussions of the social implications of the development of communication technology. For membership and subscription information and pricing, please visit www.ieee.org/membership-catalog. Member copies of Transactions/Journals are for personal use only. IEEE COMMUNICATIONS SOCIETY JOURNAL Editorial Board J-SAC Home Telephone: +1 732 981 0060. Price/Publication Information: To order individual copies for members and nonmembers, please email the IEEE Contact Center at contactcenter@ieee.org. (Note: Postage and handling charge not included.) Member and nonmember subscription prices available upon request. Available in microfiche and microfilm.