Journal ArticleDOI
Amplify-and-forward with partial relay selection
TLDR
The probability density function of the received signal-to-noise ratio for the considered relaying link is approximated in closed form, and an asymptotic exponential expression is proposed to simplify performance estimation.Abstract:
This letter offers a statistical analysis of the basic two-hop Amplify-and-Forward link, where the relay node is selected based on instantaneous and partial knowledge of the channel. In contrast with previously reported work, where relay selection requires global knowledge (2 hops) of the relaying link, the problem considered is interesting in practical ad-hoc systems, where only neighboring (1 hop) channel information is available to the nodes. The probability density function of the received signal-to-noise ratio for the considered relaying link is approximated in closed form, and an asymptotic exponential expression is proposed to simplify performance estimation.read more
Citations
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Journal ArticleDOI
Harvest-Then-Cooperate: Wireless-Powered Cooperative Communications
TL;DR: This paper proposes a harvest-then-cooperate (HTC) protocol, in which the source and relay harvest energy from the AP in the downlink and work cooperatively in the uplink for the source's information transmission.
Journal ArticleDOI
Buffer-Aided Relay Selection for Cooperative Diversity Systems without Delay Constraints
TL;DR: It is shown that the proposed relay selection scheme significantly outperforms conventional relay selection policies for all cases and ensures a diversity gain equal to two times the number of relays for large buffer sizes.
Journal ArticleDOI
Full-Duplex Relay Selection for Amplify-and-Forward Cooperative Networks
TL;DR: An optimal relay selection procedure that incorporates a hybrid relaying strategy, which dynamically switches between FD and half-duplex relaying according to the instantaneous CSI, is investigated.
Journal ArticleDOI
Max-min relay selection for legacy amplify-and-forward systems with interference
TL;DR: It is proven that previously proposed relay selection criteria for multi-relay scenarios become inefficient in the presence of interference and two extensions to the conventional max-min selection scheme suitable for different system setups are proposed.
Journal ArticleDOI
Amplify-and-Forward Relay Selection with Outdated Channel Estimates
TL;DR: It is shown that it may be preferable, in terms of outage and symbol error probability, not to include links in the relay selection process that experience a sufficiently high maximum Doppler shift, since in those cases partial relay selection outperforms best relay selection.
References
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Journal ArticleDOI
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
TL;DR: Using distributed antennas, this work develops and analyzes low-complexity cooperative diversity protocols that combat fading induced by multipath propagation in wireless networks and develops performance characterizations in terms of outage events and associated outage probabilities, which measure robustness of the transmissions to fading.
Journal ArticleDOI
Handbook of Mathematical Functions with Formulas
TL;DR: The Handbook of Mathematical Functions with Formulas (HOFF-formulas) as mentioned in this paper is the most widely used handbook for mathematical functions with formulas, which includes the following:
Journal ArticleDOI
Routing techniques in wireless sensor networks: a survey
TL;DR: A survey of state-of-the-art routing techniques in WSNs is presented and the design trade-offs between energy and communication overhead savings in every routing paradigm are studied.
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A simple Cooperative diversity method based on network path selection
TL;DR: A novel scheme that first selects the best relay from a set of M available relays and then uses this "best" relay for cooperation between the source and the destination and achieves the same diversity-multiplexing tradeoff as achieved by more complex protocols.
Journal ArticleDOI
End-to-end performance of transmission systems with relays over Rayleigh-fading channels
TL;DR: End-to-end performance of two-hop wireless communication systems with nonregenerative relays over flat Rayleigh-fading channels is presented and average bit-error rate expressions for binary differential phase-shift keying, as well as outage probability formulas for noise limited systems are derived.