The soft‐output principle—reminiscences and new developments | Zendy

Hoeher Peter A. | Zendy; Robertson Patrick | Zendy; Offer Elke | Zendy; Woerz Thomas | Zendy

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The soft‐output principle—reminiscences and new developments

Author(s) -

Hoeher Peter A.,

Robertson Patrick,

Offer Elke,

Woerz Thomas

Publication year - 2007

Publication title -

european transactions on telecommunications

Language(s) - English

Resource type - Journals

eISSN - 1541-8251

pISSN - 1124-318X

DOI - 10.1002/ett.1200

Subject(s) - computer science , provisioning , set (abstract data type) , soft law , channel (broadcasting) , telecommunications , stage (stratigraphy) , law , political science , international law , paleontology , biology , programming language

A major breakthrough in digital communications was the provisioning of ‘soft’ outputs at each processing stage, with appropriate capabilities to use this as soft inputs in the next processing stage. This allowed for much more performant receivers especially in difficult mobile radio channel conditions, and set the stage for iterative processing. This article will outline the development of soft output algorithms over the last two decades along with associated state‐of‐the‐art applications and conclude with an outlook towards novel applications of the soft principle. Copyright © 2007 John Wiley & Sons, Ltd.

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