Joint Beamforming and Reconfigurable Intelligent Surface Design for Two-Way Relay Networks

Wang, Jun; Liang, Ying-Chang; Yuan, Xiaojun; Wang, Xinguo

doi:10.1109/globecom42002.2020.9348174

Cited by 8 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2c). For such a scenario, the RIS can be deployed to provide spatial diversity and enhance the rate performance as in [11], minimize the transmit powers of active nodes, and/or provide over-the-air cancellation of SI signals at Alice and Bob.…”

Section: B Hybrid Two-way Relayingmentioning

confidence: 99%

Cooperative Hybrid Networks with Active Relays and RISs for B5G: Applications, Challenges, and Research Directions

Abdullah¹,

Kisseleff²,

Martins³

et al. 2022

Preprint

View full text Add to dashboard Cite

Among the recent advances and innovations in wireless technologies, reconfigurable intelligent surfaces (RISs) have received much attention and are envisioned to be one of the enabling technologies for beyond 5G (B5G) networks. On the other hand, active (or classical) cooperative relays have played a key role in providing reliable and power-efficient communications in previous wireless generations. In this article, we focus on hybrid network architectures that amalgamate both active relays and RISs. The operation concept and protocols of each technology are first discussed. Subsequently, we present multiple use cases of cooperative hybrid networks where both active relays and RISs can coexist harmoniously for enhanced rate performance. Furthermore, a case study is provided which demonstrates the achievable rate performance of a communication network assisted by either an active relay, an RIS, or both, and with different relaying protocols. Finally, we provide the reader with the challenges and key research directions in this area.

show abstract

Section: B Hybrid Two-way Relayingmentioning

confidence: 99%

Cooperative Hybrid Networks with Active Relays and RISs for B5G: Applications, Challenges, and Research Directions

Abdullah¹,

Kisseleff²,

Martins³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…In [2], a detailed overview of an IRS-aided communication system is presented. In [3], the phase shift of an IRS-aided twoway (TW) communication system is designed to maximize the signal-to-noise ratio (SNR) at the destination. For an IRS-assisted TW communication system, the phase shift at the RE is optimized to maximize the sum-secrecy rate.…”

Section: Introductionmentioning

confidence: 99%

Performance of IRS-Aided FD Two-Way Communication Network With Imperfect SIC

Kumar

Singya

Krejcar

et al. 2023

IEEE Trans. Veh. Technol.

View full text Add to dashboard Cite

Intelligent reflecting surface (IRS) is a promising technology to deploy reconfigurable and cost-effective nextgeneration wireless communication systems. In this work, we investigate the performance of an IRS-aided two-way communication network over Rayleigh fading channels, where downlink and uplink transmission between the base station and the user equipment is established in full-duplex mode. We take into account the impact of residual self-interference (RSI), which results from imperfect self-interference cancellation. We derive the analytical expressions of outage probability (OP), asymptotic OP, and obtain diversity order of the system. We also derive ergodic capacity in terms of the Meijer-G function. Further, we derive the analytical expressions of average symbol error rate (ASER) for general order rectangular quadrature amplitude modulation (QAM), cross QAM, and hexagonal QAM. We highlight the impact of reflecting elements, RSI, and other system parameters on the performance of the considered network and also compare the ASER of various QAM constellations. Finally, Monte-Carlo simulations validate the derived analytical expressions.

show abstract

“…For example, Xiu et al [4] maximized the secrecy rate of an IRS-aided millimeter-wave system with low-resolution digital-to-analog converters (DACs). Wang et al [5] considered a two-way relay network wherein an IRS was deployed to enhance the minimum capacity of the two users. Guo et al [6] examined the problem of maximizing the weighted sum-rate in an IRS-assisted multiuser MISO system subject to both perfect and imperfect channel state information (CSI).…”

Section: Introductionmentioning

confidence: 99%

Low-Complexity Sum-Capacity Maximization for Intelligent Reflecting Surface-Aided MIMO Systems

Sirojuddin¹,

Putra²,

Huang³

2022

Preprint

View full text Add to dashboard Cite

Reducing computational complexity is crucial in optimizing the phase shifts of Intelligent Reflecting Surface (IRS) systems since IRS-assisted communication systems are generally deployed with a large number of reflecting elements (REs). This letter proposes a low-complexity algorithm, designated as Dimension-wise Sinusoidal Maximization (DSM), to obtain the optimal IRS phase shifts that maximizes the sum capacity of a MIMO network. The algorithm exploits the fact that the objective function for the optimization problem is sinusoidal w.r.t. the phase shift of each RE. The numerical results show that DSM achieves near maximal sum-rate and faster convergence speed than two other benchmark methods.

show abstract

Joint Beamforming and Reconfigurable Intelligent Surface Design for Two-Way Relay Networks

Cited by 8 publications

References 13 publications

Cooperative Hybrid Networks with Active Relays and RISs for B5G: Applications, Challenges, and Research Directions

Cooperative Hybrid Networks with Active Relays and RISs for B5G: Applications, Challenges, and Research Directions

Performance of IRS-Aided FD Two-Way Communication Network With Imperfect SIC

Low-Complexity Sum-Capacity Maximization for Intelligent Reflecting Surface-Aided MIMO Systems

Contact Info

Product

Resources

About