Energy efficient power allocation and relay location for asymmetric bi-directional relaying

Ji, Xiaodong; Zhu, Wei-Ping; Massicotte, Daniel; Ahmed-Ouameur, Messaoud

doi:10.1109/globalsip.2015.7418393

Cited by 5 publications

(6 citation statements)

References 10 publications

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“…The authors of [5] took a BDRS using an AF relay into consideration and proposed a joint power adaptation and relay selection technique, minimizing the total transmit power. By using the statistical channel knowledge, a joint power adaptation and relay location algorithm was developed in [6] to reduce the total transmit power of an AF relay-assisted BDRS while guaranteeing the QoS requirement of the system. In [7], a DF relay-assisted BDRS with a fixed packet rate was investigated, leading to three power adaptation algorithms, minimizing the system, the relay and the source energy consumption, respectively.…”

Section: Related Workmentioning

confidence: 99%

“…One valid physical-layer method for enhancing EE of wireless communications is the utilization of power adaptation techniques [5][6][7], whereby a transmitter can frequently adapt its transmit-power level in the light of the wireless channel states as well as the quality-of-service (QoS) requirements of receivers. It is well known that a transmitter should use the channel knowledge so as to implement power adaptation.…”

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confidence: 99%

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Energy-efficient resource management for OFDM modulated bidirectional relaying with quality-of-service constraint

Qian

Huang

2021

J Wireless Com Network

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This paper addressed the energy-efficient resource management problem of an amplify-and-forward relay-assisted bidirectional relay system under a quality-of-service (QoS) constraint. The objective is to develop a holistic resource management algorithm for joint implementation of relay selection, power adaptation and bit-rate management for optimal energy efficiency (EE). A three-stage approach is proposed to solve the energy-efficient resource management problem. At stage 1 (stage of power management), a per-subcarrier energy-efficient problem is investigated, leading to a power adaptation algorithm for maximizing the system EE and ensuring the required level of the system QoS. Within the framework of the power adaptation algorithm and by exploiting spatial diversity of multiple-relay channels, distributed relay selection is investigated at stage 2 (stage of relay management). Next, the bit-rate management problem is tackled at stage 3, namely assigning bit rate to different subcarriers to maximize the system EE further. Finally, summarizing the results achieved at the three stages, a novel EE technology combined with relay selection, bit-rate management and power adaptation is developed. Simulation results validated the correctness and the efficiency of the proposed algorithm. It is shown that the proposed algorithm can significantly reduce the total transmit power of the system while ensuring the required system QoS.

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Section: Related Workmentioning

confidence: 99%

mentioning

confidence: 99%

Energy-efficient resource management for OFDM modulated bidirectional relaying with quality-of-service constraint

Qian

Huang

2021

J Wireless Com Network

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“…where c(k), k ∈ {1, 2, · · · , K − 1} is defined in (17). It is clear that linear system (23) can be solved by calculating the inverse matrix of X.…”

Section: Appendix 2: Proof Of Propositionmentioning

confidence: 99%

“…where d ij and g ij represent the distance and the large-scale behavior of the path gain between nodes N i and N j , respectively, and α is the corresponding path-loss coefficient [12,17]. Without loss of generality, we assume that g ij is a complex Gaussian random variable and obeys CN (0, 1), and the channels are reciprocal, i.e., H ij = H ji and quasi-static.…”

Section: Network Modelmentioning

confidence: 99%

“…By exploiting the statistical channel knowledge at transmitters, the authors of [16] addressed an optimization problem minimizing the total transmit power of the TWR network with different outage probability constraints on the two sources. By exploiting the statistical channel knowledge at transmitters, a joint power allocation and relay location algorithm was proposed in [17] to reduce the power consumption of an asymmetric two-way AF relay network while ensuring the required network quality of service. In [18], the hybrid one-and two-way relaying policy proposed in [13] was extended to an orthogonal frequency-division multiplexing (OFDM) modulated TWR network.…”

Section: Related Workmentioning

confidence: 99%

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Power minimization for OFDM modulated two-way amplify-and-forward relay wireless sensor networks

Bao

2017

J Wireless Com Network

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This paper studies a power minimization problem of an orthogonal frequency-division multiplexing modulated two-way amplify-and-forward relay wireless sensor network (WSN). The objective is to develop effective strategies for controlling the transmit power levels of WSN nodes and assigning the bit rates among different subcarriers to minimize the overall transmit power of the network, while ensuring the end-to-end target rates of the two WSN sources. By using channel knowledge at transmitters, a two-step method is proposed to solve the power minimization problem, resulting in a joint power control and bit rate assignment (JPCBRA) algorithm. At the first step, a per-subcarrier optimization problem concerning the power minimization issue is solved, giving closed-form solutions for individual transmit powers at the WSN sources and the relay. At the second step, the end-to-end target rates of the two WSN sources are allocated to different subcarriers so that the total transmit power can be reduced further while satisfying the initial data-rate requirement of the two WSN sources. Computer simulation results confirmed the effectiveness of the proposed JPCBRA algorithm. It is shown that with the JPCBRA algorithm, the total transmit power of the network can be significantly reduced in any traffic and/or channel cases in contrast to the compared schemes.

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Multicast Network Security with Asymmetric Cooperative Relaying

Sarker

Sarkar

Anower

et al. 2022

Int J Wireless Inf Networks

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Energy efficient power allocation and relay location for asymmetric bi-directional relaying

Cited by 5 publications

References 10 publications

Energy-efficient resource management for OFDM modulated bidirectional relaying with quality-of-service constraint

Energy-efficient resource management for OFDM modulated bidirectional relaying with quality-of-service constraint

Power minimization for OFDM modulated two-way amplify-and-forward relay wireless sensor networks

Multicast Network Security with Asymmetric Cooperative Relaying

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