Proceedings ArticleDOI
Comparison of Full-Duplex and Half-Duplex Modes with a Fixed Amplify-and-Forward Relay
Taneli Riihonen,Stefan Werner,Risto Wichman +2 more
- pp 13-17
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TLDR
The results indicate that with practical signal-to-noise ratio values, the full-duplex mode is preferable in terms of capacity.Abstract:
We study the fundamental capacity trade-off between full-duplex and half-duplex transmission modes in a twohop communication system with a fixed infrastructure-based amplify-and-forward relay. First, we derive closed-form expressions for the average end-to-end capacity in the relay link. We show that it may be better to tolerate some loop interference with the full-duplex mode than to consume channel resources by allocating two orthogonal channels with the half-duplex mode. Furthermore, we evaluate the maximum loop interference power levels that still allow the full-duplex mode to achieve the same capacity as the half-duplex mode. Our results indicate that with practical signal-to-noise ratio values, the full-duplex mode is preferable in terms of capacity.read more
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Journal ArticleDOI
Hybrid Full-Duplex/Half-Duplex Relaying with Transmit Power Adaptation
TL;DR: This work proposes the combination of opportunistic mode selection and transmit power adaptation for maximizing instantaneous and average spectral efficiency after noting that the trade-off favors alternately the modes during operation.
Journal ArticleDOI
Full-Duplex Wireless Communications: Challenges, Solutions, and Future Research Directions
TL;DR: This treatise discusses a range of critical issues related to the implementation, performance enhancement and optimization of FD systems, including important topics such as hybrid FD/HD scheme, optimal relay selection and optimal power allocation, etc.
Journal ArticleDOI
In-Band Full-Duplex Relaying: A Survey, Research Issues and Challenges
TL;DR: Several important aspects of in-band FDR are identified: basics, enabling technologies, information-theoretical performance analysis, key design issues and challenges, and some broader perspectives for in- band FDR.
Proceedings ArticleDOI
Self-interference suppression in full-duplex MIMO relays
TL;DR: This paper proposes a novel technique for self-interference suppression in full-duplex Multiple-Input Multiple-Output (MIMO) relays that can suppress interference substantially with less impact on the useful signal.
Journal ArticleDOI
Achievable Rates of Full-Duplex MIMO Radios in Fast Fading Channels With Imperfect Channel Estimation
TL;DR: To maximize the system ergodic mutual information, which is a nonconvex function of power allocation vector at the nodes, a gradient projection algorithm is developed to optimize the power allocation vectors.
References
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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.
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User cooperation diversity. Part I. System description
TL;DR: Results show that, even though the interuser channel is noisy, cooperation leads not only to an increase in capacity for both users but also to a more robust system, where users' achievable rates are less susceptible to channel variations.
Journal ArticleDOI
User cooperation diversity. Part II. Implementation aspects and performance analysis
TL;DR: It is illustrated that, under all scenarios studied, cooperation is beneficial in terms of increasing system throughput and cell coverage, as well as decreasing sensitivity to channel variations.
Journal ArticleDOI
Fading relay channels: performance limits and space-time signal design
TL;DR: This paper examines the basic building block of cooperative diversity systems, a simple fading relay channel where the source, destination, and relay terminals are each equipped with single antenna transceivers and shows that space-time codes designed for the case of colocated multiantenna channels can be used to realize cooperative diversity provided that appropriate power control is employed.