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In telecommunication, there are various ways to communicate between two points, referred to as mode of operation. This is usually done in three ways: simplex, half-duplex, and full duplex. Simplex is a one-way communication such as broadcasting. Half duplex is a two-way communication but one at a time such as taxi dispatch system. Full duplex is a method of two-way communication, where two users can communicate with each other simultaneously such as land-mobile telephone system. In full duplex communication, the link is maintained in both directions, either in the frequency domain or in the time domain. This is governed by two basic communication schemes: frequency division duplex (FDD) and time division duplex (TDD). A brief description of these communication modes is presented in this chapter.
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Milnor, J. W., & Randall, G. A. (2000). Simplex. In The IEEE authoritative dictionary of standard terms (7th ed., p. 1053). US: Institute of Electrical and Electronic Engineers.
Milnor, J. W., & Randall, G. A. (1931, May). The Newfoundland-Azores high-speed duplex cable. Canada: A.I.E.E. Electrical Engineering.
IS-54. (1989, December). Dual-mode mobile station-base station compatibility standard (EIA/TIA project number 2215).
IS-95. (1993, March 15). Mobile station - base station compatibility standard for dual mode wide band spread spectrum cellular systems (TR 45, PN-3115).
ITU-R. Requirements related to technical performance for IMT-Advanced radio interface(s) (Report M.2134), Approved in November 2008.
- Simplex, Duplex, FDD, and TDD
- Chapter 2
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