Performance advantages of time-frequency-sliced systems

Mark J. Karol, Zygmunt J. Haas, Clark B. Woodworth

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations

Abstract

The Time-Frequency-Code-Slicing technique allows multiple users with different speed requirements access to a communications resource in a manner that is cost effective over a wide range of access speeds. For instance, with a Time-Frequency-Slicing approach, users are assigned different portions of the spectrum (e.g., on a slot-by-slot basis), granting them access to a fraction of the shared resource that is commensurate with their needs and their own end equipment. By efficiently packing the time-frequency space, better system utilization is attained. In this paper, we illustrate the performance advantages of Time-Frequency-Sliced Systems by computing the reduction in blocking probability achieved under the constraint of a single transmitter/receiver per user. The dramatic reduction in blocking probability is attained at the expense of a variable-bit-rate transmitter/receiver with fast (slot-by-slot) tunability. For example, at a 90% traffic load, with 30 frequency bands and 15 time slots per frame, the Time-Frequency-Slicing technique reduces the blocking probability from 90% (for the traditional allocation scheme) down to only 1% for a new connection that requests 13 `time-frequency slices.'

Original languageEnglish
Pages1104-1111
Number of pages8
StatePublished - 1995
EventProceedings of the 1995 6th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'95. Part 3 (of 3) - Toronto, Can
Duration: 27 Sep 199529 Sep 1995

Conference

ConferenceProceedings of the 1995 6th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'95. Part 3 (of 3)
CityToronto, Can
Period27/09/9529/09/95

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