Analysis of Outage Probability and Throughput for Half-Duplex Hybrid-ARQ Relay Channels

Maham, Behrouz; Behnad, Aydin; Debbah, Mérouane

doi:10.1109/tvt.2012.2203342

Cited by 44 publications

(56 citation statements)

References 30 publications

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“…This seems a reasonable assumption when considering low-rate and short-length ACK/NACK packets [31]. CRC header in each packet is also assumed to be error-free.…”

Section: Harq-irmentioning

confidence: 99%

Energy efficiency analysis of hybrid-ARQ relay-assisted schemes in LTE-based systems

Maaz¹,

Lorandel²,

Mary³

et al. 2016

J Wireless Com Network

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This work deals with the analysis of energy efficiency (EE) issues of hybrid automatic repeat request (HARQ) protocols such as Chase combining (CC) and incremental redundancy (IR), in a LTE baseband-based half-division duplex relay-assisted network. The EE performance is highly dependent on delay and circuitry power consumption, i.e., baseband and radio-frequency (RF) parts, and the effects of these components are investigated for amplify and forward (AF) and decode and forward (DF) protocols. Moreover, a realistic estimation of the baseband power consumption is provided. Our contributions in this paper can be summarized as follows: (1) an accurate estimation of power consumption of the main blocks of the LTE baseband is provided based on a real field-programmable gate array (FPGA) target and is integrated to a global energy consumption model (2) based on the previous power consumption evaluation; energy-efficiencies of DF protocol with HARQ-CC and HARQ-IR are investigated with various modulation orders; in addition, a quite insightful study of the energy efficiency-spectral efficiency trade-off is conducted, and (3) DF and AF protocols with HARQ are compared in terms of EE, and recommendations are suggested in order to jointly enhance the QoS and the energy efficiency of wireless systems.

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“…This seems a reasonable assumption when considering low-rate and short-length ACK/NACK packets [31]. CRC header in each packet is also assumed to be error-free.…”

Section: Harq-irmentioning

confidence: 99%

Energy efficiency analysis of hybrid-ARQ relay-assisted schemes in LTE-based systems

Maaz¹,

Lorandel²,

Mary³

et al. 2016

J Wireless Com Network

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“…These works consider the optimal relay selection for minimum outage probability [12]- [16]; the outage performance over Rayleigh [14], [20] and Nakagami-m fading channels [12], [13], [21]; and effects of co-channel interference on the outage probability [17]- [19]. All of these works consider only full DF relaying but not partial DF relaying even though for fixed phase durations, partial DF relaying can outperform full DF relaying [29], [30].…”

Section: B Related Workmentioning

confidence: 99%

Outage Analysis for Coherent Decode-Forward Relaying Over Rayleigh Fading Channels

Haija

2015

IEEE Trans. Commun.

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We analyze the outage performance of coherent partial decode-forward (pDF) relaying over Rayleigh fading channels in both half-and full-duplex transmissions. In coherent DF relaying, the relay either partially or fully decodes the source message, then coherently forwards the decoded message with the source to the destination. This coherent transmission creates a beamforming gain from the source and relay to the destination which improves the transmission rate. We analyze the impact of this beamforming gain on the outage performance, considering outage events at both the relay and the destination. We derive analytical expressions for the overall outage probability, assuming full CSI at receivers and only limited CSI at transmitters. We further show that at high SNR, coherent pDF relaying converges to full DF relaying and achieves the full diversity order of 2. These analyses provide a fundamental understanding of the reliability of coherent pDF relaying and form the basis for analyzing performance in larger network settings. Numerical results show that partial decoding at the relay outperforms full decoding for low SNR and high target rates in the half-duplex mode.Comparison with existing results further shows that source-relay coherent transmission and joint decoding at the destination both improve the outage performance.

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“…In this case, the outage probability at the SU-Rx depends on the probability of the th SR being able to decode the information from the SU-Tx. In addition, for a long-term static channel, the received information does not vary from one retransmission to another [21], [23]. Therefore, the mutual information between the SU-Tx and th SR at the first transmission is sr = 2 log 2 (1 + sr ), and the total information after retransmissions at the th SR is sr .…”

Section: G Outage Probability For Delay Limited Applicationsmentioning

confidence: 99%

“…Moreover, lost packets due to outage or packets received with errors can be retransmitted to support successful decoding at the receiver by implementing an automatic repeat request (ARQ) protocol for packet retransmission [21]- [23]. However, for delay sensitive applications such as voice, Voice-over-IP (VoIP) and video services, the number of retransmissions is limited, otherwise infinite buffer size would be required resulting in large delays.…”

Section: Introductionmentioning

confidence: 99%

Outage performance analysis of cognitive relay networks with BRS and MMRS

Sibomana

Zepernick

Kabiri

et al. 2013

2013, 7th International Conference on Signal Processing and Communication Systems (ICSPCS)

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In this paper, we consider a spectrum sharing system where a secondary user (SU) transmitter (SU-Tx) communicates with an SU receiver (SU-Rx) with the help of multiple secondary relays (SRs) in the presence of a single primary network link. In particular, the SU-Tx and SR are subject to their maximum transmit power limits and the timeout constraint of the primary user (PU). Moreover, we assume that the relay selection is based on either best relay selection (BRS) or max-max relay selection (MMRS). In BRS, a single relay having the best end-to-end channel condition among the SRs is selected for cooperation between the source and the destination. However, the selected relay may not experience the best source-relay channel and relay-destination channel at the same time. To overcome the limitation of selecting the same relay for both reception and transmission, MMRS uses the best relay of the SU-Tx→SR link for reception at the relay and the best relay of the SR→SU-Rx link for transmission to the destination. Specifically, we compare the performance for BRS and MMRS in terms of the outage probability, and study the impact of the number of SRs, PU transmit power and different channel mean powers of interference links on the secondary network performance. Furthermore, based on the performance of the MMRS and assuming that automatic repeat request (ARQ) is implemented for packet retransmission, we investigate the outage probability for delay limited applications. The numerical results indicate that the MMRS outperforms BRS when more than one SRs are deployed. The secondary network outage probability is reduced when the number of SRs and the number of retransmissions become large. It is also shown that the interference from the PU has a significant impact on the secondary network performance.

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Analysis of Outage Probability and Throughput for Half-Duplex Hybrid-ARQ Relay Channels

Cited by 44 publications

References 30 publications

Energy efficiency analysis of hybrid-ARQ relay-assisted schemes in LTE-based systems

Energy efficiency analysis of hybrid-ARQ relay-assisted schemes in LTE-based systems

Outage Analysis for Coherent Decode-Forward Relaying Over Rayleigh Fading Channels

Outage performance analysis of cognitive relay networks with BRS and MMRS

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