Quality-Oriented Adaptive Forwarding for Wireless Relaying

• Published in: IEEE communications letters Vol. 12; no. 3; pp. 200 - 202
• Main Authors: Fricke, J.C., Butt, M.M., Hoeher, P.A.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.03.2008; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Amplification; Applied sciences; Broadcasting; Channels; Coding, codes; Decoding; Delay; Detectors; Diversity methods; Energy consumption; Error correction; Error detection; Error probability; Exact sciences and technology; Information, signal and communications theory; Permissible error; Relaying; Relays; Signal and communications theory; Strategy; Switching; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); Wireless networks; Relay; Error probability; decode and forward (DF); Wireless telecommunication; Amplify and forward (AD); relaying; Routing; Delay time; Decoding; Adaptive method; soft-output decoding
• ISSN: 1089-7798; 1558-2558
• DOI: 10.1109/LCOMM.2008.071804

In this paper, an adaptive forwarding strategy for wireless networks with relays is introduced. The strategy evaluates the error probability of a received code word at a relay based on reliability information provided by a soft-output detector. It allows to adapt to changing channel conditions by switching between the amplify and forward and the decode and forward strategy and thus may help to decrease energy consumption and delay at the relays.