Bounds on the delay-constrained capacity of UWB communication with a relay node

We derive bounds on the expected capacity and outage capacity of a three-node relay network for UWB communications. We also provide a simple tight approximation for the derived upper bound on the capacity and then using this bound we obtain the outage probability of the network. Numerical results sh...

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Bibliographic Details
Published in:IEEE transactions on wireless communications 2009-05, Vol.8 (5), p.2265-2273
Main Authors: Zeinalpour-Yazdi, Z., Nasiri-Kenari, M., Aazhang, B., Wehinger, J., Mecklenbrauker, C.
Format: Article
Language:English
Subjects:
Applied sciences
Approximation
Capacity planning
Channels
Delay
Diversity methods
Exact sciences and technology
expected capacity
Fading
Gain
Links
Mathematical analysis
Niobium
outage capacity
outage probability
Outages
power constraint
Power system relaying
Relay
relay channel
Relays
Systems, networks and services of telecommunications
Telecommunication network reliability
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Ultra wideband communication
Upper bound
UWB channel
Wireless communication
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Summary:We derive bounds on the expected capacity and outage capacity of a three-node relay network for UWB communications. We also provide a simple tight approximation for the derived upper bound on the capacity and then using this bound we obtain the outage probability of the network. Numerical results show that a significant improvement in the system capacity and outage probability is obtained by adding a relay node. Moreover, our theoretical results reveal that the diversity gain of a relay channel substantially increases by using UWB links instead of NB links. We also derive these bounds when we have a constraint on the total transmitted power of the source and the relay nodes.
ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2009.080682