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1972•IRE Transactions on Communications SystemsRequires access

Equivalance of Time-Multiplexed and Frequency-Multiplexed Signals in Digital Communications

U. Timor

Open publisher page 3 citations

Abstract

In comparing different techniques for multiplexingNbinary data signals into a single channel, time-division multiplexing (TDM) is known to have a theoretic efficiency of 100 percent (neglecting sync power) and thus seems to outperform frequencydivision multiplexing systems (FDM). By considering more general FDM systems, we will show that both TDM and FDM are equivalent and have an efficiency of 100 percent. The difference between the systems is in the multiplexing and demultiplexing subsystems, but not in the performance or in the generated waveforms.

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What this paper is about

In comparing different techniques for multiplexingNbinary data signals into a single channel, time-division multiplexing (TDM) is known to have a theoretic efficiency of 100 percent (neglecting sync power) and thus seems to outperform frequencydivision multiplexing systems (FDM). By considering more general FDM systems, we will show that both TDM and FDM are equivalent and have an efficiency of 100 percent. The difference between the systems is in the multiplexing and demultiplexing subsystems, but not in the performance or in the generated waveforms.

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Available abstract

In comparing different techniques for multiplexingNbinary data signals into a single channel, time-division multiplexing (TDM) is known to have a theoretic efficiency of 100 percent (neglecting sync power) and thus seems to outperform frequencydivision multiplexing systems (FDM). By considering more general FDM systems, we will show that both TDM and FDM are equivalent and have an efficiency of 100 percent. The difference between the systems is in the multiplexing and demultiplexing subsystems, but not in the performance or in the generated waveforms.

Key concepts: Multiplexing, Time-division multiplexing, sync, Frequency-division multiplexing, Computer science, Statistical time division multiplexing, Electronic engineering, Channel (broadcasting)

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