Outage analysis of coded cooperation

Cooperative communication is an emerging paradigm where multiple mobiles share their resources (bandwidth and power) to achieve better overall performance. Coded cooperation is a mechanism where cooperation is combined with-and operates through-channel coding, as opposed to the repetition-based meth...

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Bibliographic Details
Published in:IEEE transactions on information theory 2006-02, Vol.52 (2), p.375-391
Main Authors: Hunter, T.E., Sanayei, S., Nosratinia, A.
Format: Article
Language:English
Subjects:
Analogies
Applied sciences
Bandwidth
Bit error rate
Channel coding
Channels
Code Division Multiple Access
coded cooperation
Codes
Coding, codes
Communication channels
Cooperation
Decoding
diversity
Diversity methods
Exact sciences and technology
Information, signal and communications theory
Mathematical models
Mobile communication
Multiaccess communication
Numerical analysis
outage probability
Outages
Relay
Relays
Signal and communications theory
space-time coding
Switches
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission
Transmission and modulation (techniques and equipments)
transmit diversity
Transmitters
user cooperation
Wireless communication
Wireless communications
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Summary:Cooperative communication is an emerging paradigm where multiple mobiles share their resources (bandwidth and power) to achieve better overall performance. Coded cooperation is a mechanism where cooperation is combined with-and operates through-channel coding, as opposed to the repetition-based methods. This work develops expressions for outage probability of coded cooperation. In this work, each node acts as both a data source as well as a relay, i.e., only active (transmitting) nodes are available to assist other nodes, and each node operates under overall (source + relay) power and bandwidth constraints. Outage expressions confirm that full diversity is achieved by coded cooperation. This shows that despite superficial similarities, coded cooperation is distinct from decode-and-forward, which has been shown to have diversity one. The outage probability expressions developed in this work characterize coded performance at various rates. Furthermore, outage probabilities yield bounds that are arguably more insightful than the bit-error rate (BER) results previously available for coded cooperation. Numerical comparisons shed light on the relative merits of coded cooperation and various repetition-based methods, under various inter-user and uplink channel conditions.
ISSN:0018-9448
1557-9654
DOI:10.1109/TIT.2005.862084