DF versus AF: Energy consumption comparison for IEEE 802.15.4 networks

Biswas, Sankalita; Chandra, Aniruddha

doi:10.1109/comsnets.2014.6734904

Cited by 9 publications

(5 citation statements)

References 22 publications

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“…Step I: Parameter setup: Set P X according to (7), Channel parameter setting according to (8), Determine initial buffer size  and predefined target secrecy rate R s .…”

Section: Derivation Of the Total Secrecy Outage Probability Associated To Buffer-aided Relayingmentioning

confidence: 99%

“…Relay-assisted communications such as amplify-and-forward (AF) and decode-and-forward (DF) have emerged as appropriate solutions to enhance the transmission performance of wireless systems [5,6]. Regarding the appropriate relaying strategy in an interference environment such as underlay CRNs, the DF scheme is more suitable rather than other methods due to the fact that it provides increased capacity [7], less energy consumption [8] and lower outage probability [9]. Moreover, conventional relaying protocols such as AF and DF include two stages where in the first phase (time-slot), the message is received from the source and in the second phase, the received message is processed before being forwarded to destination.…”

Section: Introductionmentioning

confidence: 99%

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On the secrecy outage analysis of underlay cognitive radio systems with buffer‐aided relaying under Nakagami‐ m channels

2021

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In this work, the physical layer security performance of an underlay cognitive buffer-aided relay network over the general Nakagami-m fading channel model is addressed, where a primary source communicates with a destination via a decode-and-forward relay node in the presence of an eavesdropper and a secondary communication system. The relay is equipped with a finite-size storage equipment or buffer which can store the sequence of received data packets from source and forward it immediately or subsequently in an adequate time-slot. In this way, the buffer relay enables to adopt a link selection scheme in order to detect the best available link, (i.e. the one with higher secrecy rate) among the available data at source or at the relay buffer. The closed-form expression for the secrecy outage probability (SOP), which is a widely adopted performance metric in the considered scenario, is also derived. Numerical results confirm the accuracy of the derived closed-form analytic expression for SOP and indicates the interaction between secrecy performance and the Nakagami channel parameter m. In particular, it is shown that the SOP experiences a significant drop as the Nakagami channel parameter increases for a predefined target secrecy rate.

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“…Step I: Parameter setup: Set P X according to (7), Channel parameter setting according to (8), Determine initial buffer size  and predefined target secrecy rate R s .…”

Section: Derivation Of the Total Secrecy Outage Probability Associated To Buffer-aided Relayingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the secrecy outage analysis of underlay cognitive radio systems with buffer‐aided relaying under Nakagami‐ m channels

2021

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“…In a previous literature author has done a comparative study between AF and DF relay for energy efficiency prospective [10] [3]. Another related literature includes, [11] [12], where authors have developed a simulation model to find out the chip error rate.…”

Section: Introductionmentioning

confidence: 99%

PER reduction with relays for low energy short range 802.15.4 WPN

Biswas

Chandra

Roy

2015

2015 IEEE International WIE Conference on Electrical and Computer Engineering (WIECON-ECE)

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IEEE 802.15.4 is a very popular standard for low rate wireless personal area network (LR-WPAN) due to its low energy consumption and different short range applications. Packet error rate (PER) of 802.15.4 PHY layer in the presence of a third node as a wireless relay between source and destination node is analyzed. PER is obtained from the bit error rate (BER) and the BER is obtained from signal to noise interference ratio. PER increases the no. of retransmission as well as energy consumption. The main focus of this paper is to investigate that under which relaying strategy PER is less so the energy consumption in PHY layer can be reduced. The simulation results are shown to validate the analytical formulations.Index Terms-LR-WPAN,IEEE 802.15.4, Relay, Amplify-andforward (AF), Decode-and-forward (DF), Signal to noise ratio (SNR), Packer error rate (PER), Payload Length.

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“…Hence, (20) shows how I 3.R scales with respect to the diversity gain (i.e., SN R/τ M ) if Q is large. Notice that I 4.R is unaffected by Q as it represents the average SEP between S → D where no relays are used.…”

Section: B Large Number Of Relay: Q → ∞mentioning

confidence: 99%

“…For PRS, channel information is only required locally at the source node, which enables to achieve high cooperative diversity at reduced overall complexity. Decode-and-forward (DF) relays are the ideal choice for cooperative MTC due to its EE [20], simple interference cancellation [21], and unlike AF relaying does not suffer from high peak-to-average power ratio (PAPR) [22].…”

Section: Introductionmentioning

confidence: 99%

Cooperative OFDM-IM Relay Networks With Partial Relay Selection Under Imperfect CSI

Crawford

2018

IEEE Trans. Veh. Technol.

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Abstract-In this work, we investigate the performance of cooperative orthogonal frequency division multiplexing with index modulation (OFDM-IM) with the low complexity greedy detection (GD). In particular, we propose a novel partial relay selection (PRS) scheme whose search criteria are designed to exploit the IM sub-carriers. To provide low-complexity receiver, we further examine the energy-sensing based GD design for the cooperative OFDM-IM. For the performance analysis we derive novel upper bound and approximate closed form solutions for both the average index error probability (IEP) and the average symbol error probability (SEP) over Nakagami-m fading channels with imperfect channel state information (CSI) at the relays and destination. Unlike the information theoretical works, in presence of positive detection error in the relays, the derived expressions provide a useful insight into the error performance of cooperative OFDM-IM under various fading conditions. The numerical and simulation results clearly present that the proposed scheme harmonizing partially selected relays and their IM sub-carriers with GD can outperform the benchmark schemes, under uncertain CSI, at reduced complexity.

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DF versus AF: Energy consumption comparison for IEEE 802.15.4 networks

Cited by 9 publications

References 22 publications

On the secrecy outage analysis of underlay cognitive radio systems with buffer‐aided relaying under Nakagami‐ m channels

On the secrecy outage analysis of underlay cognitive radio systems with buffer‐aided relaying under Nakagami‐ m channels

PER reduction with relays for low energy short range 802.15.4 WPN

Cooperative OFDM-IM Relay Networks With Partial Relay Selection Under Imperfect CSI

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