Proceedings ArticleDOI
Diversity-multiplexing tradeoff for the non-separated two-way relay DF channel
Arun Kumar Singh,Petros Elia,Kiran T. Gowda,David Gesbert +3 more
- pp 196-200
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TLDR
The operational meaning of this result is that the multiple access channel (MAC) phase of HBC protocol is not necessary to achieve optimal performance, this results in a simplification of the communication protocol.Abstract:
This work establishes the diversity-multiplexing tradeoff (DMT) of the four-phase decode-and-forward (DF) protocol in the half-duplex, non-separated two-way relay channel. We consider a fading channel model where the source relay links are Rayleigh distributed but the direct link between sources is left more general as Nakagami-m distributed and investigate for any possible gains in the achievable DMT using four-phase hybrid broadcast (HBC) protocol, as compared to three-phase time-division broadcast (TDBC) protocol. For the statistically symmetric case of Rayleigh fading and asymmetric fading with more stable direct link (m > 1), the optimal DMT of the HBC protocol is computed, and is shown to be achieved by a three-phase orthogonal variant, TDBC protocol. The operational meaning of this result is that the multiple access channel (MAC) phase of HBC protocol is not necessary to achieve optimal performance, this results in a simplification of the communication protocol. For less stable direct link (1 over 2 ≤ m < 1), the analysis establishes that the MAC phase of HBC protocol is necessary to achieve optimal DMT.read more
Citations
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Proceedings ArticleDOI
Degrees of freedom for separated and non-separated half-duplex cellular MIMO two-way relay channels
TL;DR: A widely used two-phase multiple access/broadcast (MABC) two-way relaying protocol can be DoF-limiting in some cases due to its inherent inability to exploit the possibly available BS-MSs direct-link.
Dissertation
Joint channel pairing and power allocation optimization in two-way multichannel relaying.
TL;DR: The pairing optimization is formulated as an axial 3-D assignment problem which is NP-hard, and an iterative optimization method to solve it with complexity O(N) is proposed, based on SNR over each subchannel.
Proceedings ArticleDOI
Finite-SNR diversity-multiplexing tradeoff for decode-and-forward relaying system allowing intra-link errors
TL;DR: The main results are: the DF-IE system outperforms the conventional decode-and-forward (DF) system in whole SNR region, and additional 0.25 multiplexing gain can be achieved by the DF -IE system.
References
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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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Diversity and multiplexing: a fundamental tradeoff in multiple-antenna channels
Lizhong Zheng,David Tse +1 more
TL;DR: A simple characterization of the optimal tradeoff curve is given and used to evaluate the performance of existing multiple antenna schemes for the richly scattered Rayleigh-fading channel.
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The m-Distribution—A General Formula of Intensity Distribution of Rapid Fading
TL;DR: In this article, the authors summarized the principal results of a series of statistical studies in the last seven years on the intensity distributions due to rapid fading, and presented an extremely simplified method for estimating the improvement available from various systems of diversity reception.
Journal ArticleDOI
On the achievable diversity-multiplexing tradeoff in half-duplex cooperative channels
TL;DR: In this paper, Zheng-Tse diversity-multiplexing tradeoff for delay-limited coherent fading channels consisting of N (half-duplex and single-antenna) partners and one cell site is investigated.