Outage Probabilities of Orthogonal Multiple-Access Relaying Techniques With Imperfect Source-Relay Links

Lu, Pen-Shun; Zhou, Xiaobo; Matsumoto, Tad

doi:10.1109/twc.2014.2384046

Cited by 16 publications

(36 citation statements)

References 38 publications

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“…Further, we consider which components of CSI are necessary at the source and relay to adapt to instantaneous fading. In the literature, different forms of CSI have been studied, including perfect CSI, long-term CSI, or partial CSI as some estimate in between [25]- [27]. However, there has not been much study on different types of CSI in the full-duplex relay channel.…”

Section: Main Results and Contributionsmentioning

confidence: 99%

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Link Regime and Power Savings of Decode-Forward Relaying in Fading Channels

Pinals

Haija

2016

IEEE Trans. Commun.

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In this paper, we re-examine the relay channel under the decode-forward (DF) strategy. Contrary to the established belief that block Markov coding is always the rate-optimal DF strategy, under certain channel conditions (a link regime), independent signaling between the source and relay achieves the same transmission rate without requiring coherent channel phase information. Furthermore, this independent signaling regime allows the relay to conserve power. As such, we design a composite DF relaying strategy that achieves the same rate as block Markov DF but with less required relay power. The finding is attractive from the link adaptation perspective to adapt relay coding and relay power according to the link state. We examine this link adaptation in fading under both perfect channel state information (CSI) and practical CSI in which nodes have perfect receive and long-term transmit CSI, and derive the corresponding relay power savings in both cases. We also derive the outage probability of the composite relaying scheme, which adapts the signaling to the link regime. Through simulation, we expose a tradeoff for relay placement showing that the relay conserves the most power when closer to the destination but achieves the most rate gain when closer to the source.

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Section: Main Results and Contributionsmentioning

confidence: 99%

“…β r is the minimum value that satisfies (27) as using a larger β r does not increase transmission rate. This minimum value of β r also saves relay power.…”

Section: Proof Of Theorem 2 and Theoremmentioning

confidence: 99%

Link Regime and Power Savings of Decode-Forward Relaying in Fading Channels

Pinals

Haija

2016

IEEE Trans. Commun.

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“…The outage probability of the MARC has been formulated under the assumption of orthogonal transmission and perfect (error-free) intra links (i.e., source-to-relay links) [6]. Lu et al [8] has further relaxed the assumption of error-free intra links, and re-formulated the framework for outage probability analyses. Practical joint network-channel coding (JNCC) schemes have been investigated in [9]- [11] over MARC using different channel codes, for instance, low-density parity-check (LDPC) codes [9], accumulator (ACC) aided turbo codes [10], and more generic turbo code structure [11].…”

Section: Introductionmentioning

confidence: 99%

“…A preliminary study on the transmission of correlated sources over non-orthogonal MARC can be found in [16], where no performance verification is provided by taking into account the helper 1 . In the MARC, the relay decodes the original information sequences, performs network coding (e.g., bit-wise exclusive-OR (XOR)), and forwards the network-coded sequence to the destination [7], [8]. This process at the relay is referred to as XOR based multi-user complete decoding (MUD-XOR) [17]- [19].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Lossy Decode-and-Forward for Non-Orthogonal MARCs

Tervo

Qian

et al. 2018

IEEE Trans. Wireless Commun.

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Non-orthogonal transmission is considered to be one of the promising techniques for improving the throughput of the existing and future wireless communication networks. We concentrate on the transmission of both independent and correlated binary sources over a non-orthogonal multiple access relay channel (MARC), which consists of two sources, one relay, and one destination. The lossy decode-and-forward (DF), developed from the conventional DF, is adopted at the relay. Two time slots are required with non-orthogonal transmission over such network setup, while three time slots are required with the conventional orthogonal transmission. We analyze the outage probability of transmission of independent binary sources over the non-orthogonal MARC based on the theorem of multiple access channel (MAC) with a helper, which combines the Slepian-Wolf rate region and the MAC capacity region. For the performance verification, we implement a practical coding-decoding chain, which is applicable to the transmission of both independent and correlated binary sources. Exclusive-OR (XOR) based multiuser complete decoding is introduced at the relay node, and iterative joint decoding is utilized at the destination by taking into consideration the estimated intra-link error probability and correlation information between the sources. The practical simulation results are well matched with the theoretical analyses. Index Terms-Multiple access channel with a helper, multiple access relay channels, outage probability, Slepian-Wolf theorem, Shannon's lossy source-channel separation theorem.

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“…One possible cooperative wireless network scenario is the multiple access relay, where a common relay helps multiple source nodes to communicate with their destination with the aim of improving system performance [1], [2]. Multiple access techniques are used to allow a large number of users to share the allocated frequency band in the most efficient way.…”

Section: Introductionmentioning

confidence: 99%

Performance Modeling and Analysis of AF Relaying with Hidden Nodes

Alfitouri

Hamdi

2017

2017 IEEE Wireless Communications and Networking Conference (WCNC)

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Abstract-In this paper, we investigate and analyse the performance of amplify and forward (AF) relay system connecting a group of independent sources to their destinations employing a random carrier sense multiple access (CSMA) protocol. The sources are isolated from their destination and the only means for them to communicate with their destination is through the common relay. Sources are arbitrarily distributed around the relay and experience Rayleigh fading channels. This paper develops a new and more accurate model for multiple access interference at both the relay and destination which takes into account random sources location and the effects of fading and thermal noise at both the relay and destination. Moreover, the effect of the hidden nodes on the system performance is considered as a randomly occurring factor. This leads to the derivation of new analytical expressions for the overall spectral efficiency (SE) which can be used to estimate the throughput of the CSMA-based relay in Rayleigh fading channels and to study the impact of the different system parameters on their efficiency. The accuracy of the new mathematical results is confirmed by Monte Carlo simulation.

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Outage Probabilities of Orthogonal Multiple-Access Relaying Techniques With Imperfect Source-Relay Links

Cited by 16 publications

References 38 publications

Link Regime and Power Savings of Decode-Forward Relaying in Fading Channels

Link Regime and Power Savings of Decode-Forward Relaying in Fading Channels

Performance Analysis of Lossy Decode-and-Forward for Non-Orthogonal MARCs

Performance Modeling and Analysis of AF Relaying with Hidden Nodes

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