NDLI: Outage probability analysis of cooperative transmission protocols without and with network coding: inter-user channels based comparison

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Outage probability analysis of cooperative transmission protocols without and with network coding: inter-user channels based comparison

Content Provider	ACM Digital Library
Author	Karl, Holger Woldegebreal, Dereje H. Valentin, Stefan
Abstract	In wireless networks, cooperative transmission is used as a means to combat channel fading. In this system, a source and a relay transmit each others' messages to a common destination using either amplify-and-forward or decode-and-forward strategies; the protocols in cooperative transmission can also broadly be categorized as static and adaptive. The idea in a network-coding-based cooperative transmission protocol is to allow the source and relay to combine messages by a network coding operation; a modulo-2 sum operation implements this network coding. In this work, the performance of various decode-and-forward-based cooperative transmission protocols without and with additional network coding is investigated. Outage probability is used as a measure of performance, and results for symmetrical source-relay and source/relay-destination channels are presented; also a source-relay-channels-based comparison is made. Based on these outage results, network-coding-based protocols are found to be suitable when the source-relay channels are unreliable; when the source-relay channels are good, protocols without network coding perform better. Moreover, to improve the performance of static protocols, we have introduced a sequence of decoding at the destination, and the corresponding outage results show that these protocols can achieve full diversity.
Starting Page	36
Ending Page	44
Page Count	9
File Format	PDF
ISBN	9781595938510
DOI	10.1145/1298126.1298136
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2007-10-23
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Cooperative transmission Performance comparison Static and adaptive protocols Network coding Outage probability
Content Type	Text
Resource Type	Article

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