BER-based power allocation for Amplify-and-Forward and Decode-and-Forward relaying systems

Wu, Meng; Wübben, Dirk; Dekorsy, Armin

doi:10.1109/wsa.2011.5741925

Cited by 11 publications

(5 citation statements)

References 10 publications

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“…In [4], the EE for the DF-TWRT (two-way relay transmission) under relay power constraint is analyzed. Through the power allocation scheme, the total transmit power subject to a target BER is minimized at the destination for both AF and DF relaying systems [5]. Previous works are more concerned about the EE performance of one-way or two-way relay under AF/DF protocols.…”

Section: Introductionmentioning

confidence: 99%

Influence of Modulation Rate on Energy Efficiency for Relay-aided Transmission: Decode-and-forward Protocol

Sun¹,

Wang²,

Chen³

et al. 2016

Proceedings of the 2015 2nd International Forum on Electrical Engineering and Automation (IFEEA 2015)

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Abstract. In this paper, we investigate the effect of modulation rate on the energy efficiency of a two-hop communication system with the assistance of a half-duplex decode-and-forward (DF) relay, considering the given bit error rate (BER) and using the M-QAM modulation. First, we formulate the optimum model of transmission power, subject to the given BER. Then the minimum transmission power under the constraint of the given BER is obtained. For energy efficiency problem, the circuit power consumption of devices can not be ignored, so with the circuit power consumption considered, we derive and analyze the expression of energy efficiency based on the modulation rate. According to convex optimization theory, energy efficiency is a quasi-concave function of modulation rate has been proved. We find that when the modulation rate increases, the energy efficiency will be first increases and then decreases. Finally, the theoretical analysis is corroborated by simulation results. Moreover, it is shown that the location of relay node has effect on system energy efficiency.

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Section: Introductionmentioning

confidence: 99%

Influence of Modulation Rate on Energy Efficiency for Relay-aided Transmission: Decode-and-forward Protocol

Sun¹,

Wang²,

Chen³

et al. 2016

Proceedings of the 2015 2nd International Forum on Electrical Engineering and Automation (IFEEA 2015)

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“…Among different cooperative strategies, the amplify-and-forward and the decode-and-forward cooperative techniques are often employed in cooperative networks. In [8], power allocation schemes are proposed for the total transmitted power in a relaying system based on bit-error-rate(BER) analysis. Considering amplify-and-forward and decode-and-forward for relaying systems and direct transmission, it perform a fair comparison with respect to their power consumption.…”

Section: Introductionmentioning

confidence: 99%

Influence of Modulation Rate on Energy Efficiency for Relay-aided Transmission: Amplify-and-forward Protocol

Sun¹,

Wang²,

Chen³

et al. 2016

Proceedings of the 2015 2nd International Forum on Electrical Engineering and Automation (IFEEA 2015)

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This paper describes a general relay system on the condition of a given bit-error-rate(BER). The message bits are transmitted with the assistance of a relay node using one-way amplify-and-forward(AF) relaying protocols, and the effect of modulation rate on energy efficiency (EE) is studied. First, we calculate the transmission power consumption, then the total power consumption can be obtained when circuit power consumption is taken into account. Finally, the expression of EE is derived. The theoretical analysis shows that the energy efficiency is the quasiconcave function of the modulation rate. Through the simulation results we know that when the modulation rate increases, the energy efficiency first increases and then decreases.

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“…In cooperative communication, an intermediate node between source-destination pair acts as a relay to forward the received message [4]. Amplify-and-Forward (Non-Regenerative Relaying) and Decode-and-Forward (Regenerative Relaying) are two classic and most commonly employed relaying protocols [5]. Thus, inspired by CR and cooperative communication techniques, Relay assisted Cognitive Radio Network (RCRN) has emerged as one of the candidate solutions to face the highlighted challenges of the underlay networks [6].…”

Section: Introductionmentioning

confidence: 99%

Transmit Power Minimization using Fuzzy Rule based System in Relay Assisted Cognitive Radio Networks

Sultan¹,

Zafar²,

Sultan³

2015

IJCA

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Transmit power minimization is one of the major research challenges in Relay-Assisted Cognitive Radio Networks. In this process, the transmit power of each individual relay is adjusted in such a way that the overall transmit power consumption at the relay network is minimized while satisfying the minimum Quality-of-Service (QoS) requirements of primary and secondary networks. In this paper, a similar constrained optimization problem is focused in which a secondary source-destination pair is assisted by a potential relay network having Cognitive Radio capabilities. A Fuzzy Rule Based System (FRBS) is proposed for intelligent relay selection such that total transmit power at the relay network is minimized while achieving the desired signal-to-noise ratio (SNR) at the destination and keeping the primary communication undisturbed. The effectiveness of the proposed scheme is highlighted through simulation results.

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BER-based power allocation for Amplify-and-Forward and Decode-and-Forward relaying systems

Cited by 11 publications

References 10 publications

Influence of Modulation Rate on Energy Efficiency for Relay-aided Transmission: Decode-and-forward Protocol

Influence of Modulation Rate on Energy Efficiency for Relay-aided Transmission: Decode-and-forward Protocol

Influence of Modulation Rate on Energy Efficiency for Relay-aided Transmission: Amplify-and-forward Protocol

Transmit Power Minimization using Fuzzy Rule based System in Relay Assisted Cognitive Radio Networks

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