Articles with "star ris" as a keyword



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Transmit Power Optimization of Simultaneous Transmission and Reflection RIS Assisted Full-Duplex Communications

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Published in 2022 at "IEEE Access"

DOI: 10.1109/access.2022.3179115

Abstract: Reconfigurable intelligent surface (RIS) has been proven to be a promising technology for improving the performance of future wireless systems. However, since conventional RIS can only reflect or transmit (i.e., refract) incident signals, it limits… read more here.

Keywords: power; star ris; transmission reflection; ris ... See more keywords
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Max-Min Energy-Efficiency Fair Optimization in STAR-RIS Assisted Communication System

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Published in 2023 at "IEEE Access"

DOI: 10.1109/access.2023.3278985

Abstract: In this paper, we investigate simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RIS), which enables to communicate with users in both sides by transmitting signals to users forward and reflecting signals to users backward simultaneously.… read more here.

Keywords: star ris; communication system; energy;
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STAR-RIS Assisted Full-Duplex Systems: Impact of Correlation and Maximization

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Published in 2022 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2022.3204893

Abstract: We focus on the sum-rate performance of a full-duplex (FD) communication system assisted by a simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS). Contrary to previous work, we account for the unavoidable spatial correlation at… read more here.

Keywords: full duplex; star ris; maximization; correlation ... See more keywords
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Index Modulation for STAR-RIS Assisted NOMA System

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Published in 2023 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2022.3223968

Abstract: In this letter, we first incorporate the concept of index modulation (IM) into simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided non-orthogonal multiple access (NOMA) system to improve the spectral efficiency. Specifically, the proposed… read more here.

Keywords: star ris; noma system; star;
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STAR-RIS Enabled Downlink Secure NOMA Network Under Imperfect CSI of Eavesdroppers

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Published in 2023 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2023.3233980

Abstract: Reconfigurable intelligence surface (RIS) is regarded as one of the key technologies for the future wireless communications. Recently, simultaneous transmission and reflection (STAR) RIS is proposed to overcome the geographical constraint of the conventional reflection… read more here.

Keywords: ris enabled; enabled downlink; star ris; downlink secure ... See more keywords
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Average Rate Maximization for Mobile STAR-RIS-Aided NOMA System

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Published in 2023 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2023.3261442

Abstract: Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) has been regarded as a revolutionary technology for the sixth generation (6G) mobile networks. This letter investigates the transmission scheme for mobile STAR-RIS-assisted non-orthogonal multiple access (NOMA)… read more here.

Keywords: star ris; noma system; star; mobile star ... See more keywords
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Effective Capacity Analysis of STAR-RIS-Assisted NOMA Networks

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Published in 2022 at "IEEE Wireless Communications Letters"

DOI: 10.1109/lwc.2022.3188443

Abstract: This letter studies the performance of the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided non-orthogonal multiple access (NOMA) networks in support of ultra-reliable low-latency communications. We adopt effective capacity (EC) as the metric… read more here.

Keywords: star ris; inline formula; tex math;
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Joint Optimization of STAR-RIS Assisted UAV Communication Systems

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Published in 2022 at "IEEE Wireless Communications Letters"

DOI: 10.1109/lwc.2022.3204353

Abstract: In this letter, we study the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted unmanned aerial vehicle (UAV) communications. Our goal is to maximize the sum rate of all users by jointly optimizing the… read more here.

Keywords: joint optimization; star ris; ris assisted; optimization star ... See more keywords
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Transmit Power Minimization for STAR-RIS-Empowered Uplink NOMA System

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Published in 2022 at "IEEE Wireless Communications Letters"

DOI: 10.1109/lwc.2022.3205703

Abstract: Different from conventional reconfigurable intelligent surface, simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) can provide service for the users within 360° coverage. In this letter, we discuss a power minimization problem for STAR-RIS-empowered uplink… read more here.

Keywords: star ris; power minimization; power; transmit power ... See more keywords
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Resource Allocation for Energy Efficient STAR-RIS Aided MEC Systems

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Published in 2023 at "IEEE Wireless Communications Letters"

DOI: 10.1109/lwc.2023.3236411

Abstract: In this letter, we investigate a novel simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided mobile edge computing (MEC) system. Our object is to minimize the sum energy consumption of all users by jointly… read more here.

Keywords: ris aided; energy; star ris; resource allocation ... See more keywords
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Rate-Splitting Multiple Access With STAR RIS Over Spatially-Correlated Channels

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Published in 2022 at "IEEE Transactions on Communications"

DOI: 10.1109/tcomm.2022.3198121

Abstract: The paper explores simultaneous transmitting and reflecting (STAR) reconfigurable intelligent surface (RIS)-aided rate-splitting multiple access (RSMA) communication. A base-station (BS) transmits information to the cell-edge users which are assisted by the STAR RIS in such… read more here.

Keywords: star ris; spatially correlated; ris; rate splitting ... See more keywords