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Multiple-antenna techniques in nonorthogonalmultiple access: a review Regular Papers

Fei-yan TIAN, Xiao-ming CHEN

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 12,   Pages 1665-1697 doi: 10.1631/FITEE.1900405

Abstract: As a promising physical layer technique, nonorthogonal multiple access (NOMA) can admit multiple userssame space-time resource block, and thus improve the spectral efficiency and increase the number of accessTo solve these problems, multiple-antenna techniques have been widely used in NOMA systems by exploitingThis study provides a comprehensive review of various multiple-antenna techniques in NOMA systems, withIn particular, we provide a detailed investigation on multiple-antenna techniques in two-user, multiuser

Keywords： Nonorthogonal multiple access     Multiple-antenna technique     B5G     Internet of Things    

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Model division multiple access for semantic communications Research Article

Ping ZHANG, Xiaodong XU, Chen DONG, Kai NIU, Haotai LIANG, Zijian LIANG, Xiaoqi QIN, Mengying SUN, Hao CHEN, Nan MA, Wenjun XU, Guangyu WANG, Xiaofeng TAO,pzhang@bupt.edu.cn,xuxiaodong@bupt.edu.cn,dongchen@bupt.edu.cn,niukai@bupt.edu.cn

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 6,   Pages 801-812 doi: 10.1631/FITEE.2300196

Abstract: In a multi-user system, system resources should be allocated to different users. In traditional communication systems, system resources generally include time, frequency, space, and power, so technologies such as time division (TDMA), frequency division (FDMA), space division (SDMA), code division (CDMA), and non-orthogonal (NOMA) are widely used. In , which is considered a new paradigm of the next-generation communication system, we extract high-dimensional features from signal sources in a model-based artificial intelligence approach from a semantic perspective and construct a model information space for signal sources and channel features. From the high-dimensional semantic space, we excavate the shared and personalized information of semantic information and propose a novel technology, named (MDMA)%29&ck%5B%5D=abstract&ck%5B%5D=keyword'>, which is based on the resource of the semantic domain. From the perspective of information theory, we prove that MDMA can attain more performance gains than traditional technologies. Simulation results show that MDMA saves more bandwidth resources than traditional technologies, and that MDMA has at least a 5-dB advantage over NOMA in the additive white Gaussian noise (AWGN) channel under the low signal-to-noise (SNR) condition.

Keywords： Model division multiple access (MDMA)     Semantic communication     Multiple access    

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Embracing non-orthogonalmultiple access in future wireless networks None

Zhi-guo DING, Mai XU, Yan CHEN, Mu-gen PENG, H. Vincent POOR

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 3,   Pages 322-339 doi: 10.1631/FITEE.1800051

Abstract: provides a comprehensive survey of the impact of the emerging communication technique, non-orthogonal multipleaccess (NOMA), on future wireless networks.Particularly, how the NOMA principle affects the design of the generation multiple access techniquesThen the applications of NOMA to other advanced communication techniques, such as wireless caching, multiple-inputmultiple-output techniques, millimeter-wave communications, and cooperative relaying, are discussed.

Keywords： Non-orthogonal multiple access (NOMA)     Wireless caching     Multiple-input multiple-output (MIMO) NOMA     Cooperative    

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On Differentiation Among Pilot Signals of Multiple Mobile Targets in Retro-Reflective Beamforming for Article

Xin Wang, Long Li, Tie Jun Cui, Mingyu Lu

Engineering 2023, Volume 30, Issue 11,   Pages 55-62 doi: 10.1016/j.eng.2023.08.010

Abstract: study is conducted on several retro-reflective beamforming schemes for wireless power transmission to multipleThe experimental results demonstrate that, when multiple targets broadcast continuous-wave pilot signalsat respective frequencies, a retro-reflective wireless power transmitter is capable of generating multiplewireless power beams aiming at the respective targets as long as the multiple pilot signals are explicitlyHowever, various practical complications are identified when the pilot signals of multiple targets are

Keywords： Wireless power transmission     Microwave antenna array     Retro-reflective beamforming     Pilot signal     Multipleaccess    

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Polarizationmultiplexing based duplex radio-over-fiber link for millimeterwave signal transmission to a ring of multipleradio access units None

Tayyab MEHMOOD, Hina QAYYUM, Salman GHAFOOR

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 2,   Pages 300-306 doi: 10.1631/FITEE.1700056

Abstract: architecture is proposed, where millimeter wave (mm-wave) signals are transmitted to four different radio access

Keywords： Radio over fiber     Millimeter wave     Radio access units    

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Enhanced uplink non-orthogonalmultiple access for 5Gand beyond systems None

Wen-jia LIU, Xiao-lin HOU, Lan CHEN

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 3,   Pages 340-356 doi: 10.1631/FITEE.1700842

Abstract: Uplink non-orthogonal multiple access (NOMA) is a promising technique to meet the requirements of theconnectivity and high reliability in 5G, where unequal average received power is exploited as part of the multipleaccess signature.0.1 block error rate (BLER) target can be achieved compared with existing NOMA schemes and orthogonal multipleaccess (OMA), respectively.

Keywords： Uplink non-orthogonal multiple access     Generalized Welch-bound equality     Multi-level received powers     Sequence    

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Resource allocation for network profit maximization in NOMA-based F-RANs: a game-theoretic approach Research Article

Xueyan CAO, Shi YAN, Hongming ZHANG

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 10,   Pages 1546-1561 doi: 10.1631/FITEE.2100341

Abstract: network throughput, and this is made possible by edge computing and communication functions of the fog access

Keywords： Fog radio access network     Non-orthogonal multiple access     Game theory     Cache placement     Resource allocation    

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Non-ideal space division multiple access and its application None

Ji-ying XIANG

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 3,   Pages 357-366 doi: 10.1631/FITEE.1700827

Abstract: We study the performance of space division multiple access (SDMA) under a non-ideal engineering situationWhen the SDMA channel is of high inter-layer correlation and the condition number is large, the multipleuser multiple input and multiple output user equipment (MUMIMOUE) grouping should be optimized, and

Keywords： Fifth generation (5G)     Condition number     Channel reciprocity     Feedback mode     Non-feedback mode    

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Aslotted floor acquisitionmultiple access based MACprotocol for underwater acoustic networks withRTS

Liang-fang QIAN,Sen-lin ZHANG,Mei-qin LIU

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 3,   Pages 217-226 doi: 10.1631/FITEE.1400187

Abstract: Long propagation delay, limited bandwidth, and high bit error rate pose great challenges in media accessA MAC protocol called slotted floor acquisition multiple access (slotted-FAMA) suitable for underwaterHowever, slotted-FAMA is not suitable for dense networks since the multiple request-to-send (RTS) attemptsintroduces an RTS competition mechanism to keep the network from high frequency of backoff caused by the multiplecompetition mechanism, useful data transmission can be completed successfully when the situation of multiple

Keywords： Underwater acoustic networks     Medium access control (MAC)     Request-to-send (RTS) competition     Throughput    

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Performance Optimization Analysis of 2D - OOSC Codeword for OCDMA System

Li Chuanqi,Sun Xiaohan,Zhang Mingde,Ding Dong

Strategic Study of CAE 2003, Volume 5, Issue 4,   Pages 50-54

Abstract:

The scheme of 2-dimensions optical orthogonal square codes (2D - OOSC) in optical code-division multiple-accessproved that the relativity of the codeword satisfies the system requirement, and the system BER based on multiple

Keywords： optical code division multiple access (OCDMA)     2-dimensions optical orthogonal square codes (2D-OOSC)    

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Easy access to pharmaceutically relevant heterocycles by catalytic reactions involving

Ximei Zhao, Matthias Rudolph, Abdullah M. Asiri, A. Stephen K. Hashmi

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 3,   Pages 317-349 doi: 10.1007/s11705-019-1874-4

Abstract: This review summarizes recent advances in the field of gold-catalyzed synthesis of pharmaceutically relevant aza-heterocycles via generated -imino gold carbene complexes as intermediates.

Keywords： gold     heterocycles     alkynes    

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An assessment of surrogate fuel using Bayesian multiple kernel learning model in sight of sooting tendency

Frontiers in Energy 2022, Volume 16, Issue 2,   Pages 277-291 doi: 10.1007/s11708-021-0731-6

Abstract: surrogate fuels was proposed with the application of a machine learning method, named the Bayesian multiple

Keywords： sooting tendency     yield sooting index     Bayesian multiple kernel learning     surrogate assessment     surrogate    

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ionic liquids based on DABCO-derived quaternary ammonium salts: A promising reaction medium in gaining access

Muhammad Faisal, Azeem Haider, Quret ul Aein, Aamer Saeed, Fayaz Ali Larik

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 586-598 doi: 10.1007/s11705-018-1788-6

Abstract: Owing to the directional H-bonding, coordination and -stacking abilities, terpyridines have been widely used as supramolecular tectons in molecular architectures, skeletons in molecular devices and metallopolymers, and are gaining importance in medicinal chemistry. In this paper, we have synthesized, characterized and applied deep eutectic ionic liquids (DEILs) based on 1,4-diazabicyclo[2.2.2]octane; triethylenediamine (DABCO)-derived quaternary ammonium salts for the preparation of terpyridines. These DEILs were synthesized through -alkylation of DABCO with haloalkanes (1-bromopentane or 1-bromoheptane) followed by mixing and heating with methanol or polyethylene glycol as a hydrogen bond donor. The synthesized DEILs were structurally characterized by IR and NMR. The formation of deep eutectic solvent was confirmed by freezing point depression, it composition was investigated through phase diagram, and its thermal stability was determined through differential scanning calorimetry, derivative thermogravimetry and thermal gravimetric analysis studies. Further, theseDEILswereinvestigatedfor theireffectivenesstowards synthesis of 2,2′:6′,2″-terpyridine, 3,2′:6′,3″-terpyridineand 4,2′:6′,4″-terpyridinederivatives through Kröhnke reaction. The results show that these three types of terpyridines can be obtained in reasonable yields (80% 97%) by the one-pot reaction of 2-, 3- or 4-acetylpyridine with a variety of aromatic aldehydes in the presence of DEIL as a reaction medium, sodium hydroxide as a base and ammonium acetate as a cyclizing agent. This methodology is highly efficient and cost-effective for synthesis of symmetrical as well as unsymmetrical terpyridines. Importantly, these DEILs can be reused several times without an obvious loss of activity and are non-toxic, low-volatile, biodegradable and highly thermally stable. Therefore, these DEILs as a non-conventional reaction medium for the synthesis of terpyridines provides appealing opportunities to be investigated in the domain of green synthesis.

Keywords： terpyridine     deep eutectic solvent     ionic liquid     Kröhnke reaction     DABCO    

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Resource allocation for physical-layer security in OFDMAdownlinkwith imperfect CSI None

Wei YANG, Jing MAO, Chen CHEN, Xiang CHENG, Liu-qing YANG, Hai-ge XIANG

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 3,   Pages 398-408 doi: 10.1631/FITEE.1700026

Abstract: We investigate the problem of resource allocation in a downlink orthogonal frequency-division multipleaccess (OFDMA) broadband network with an eavesdropper under the condition that both legitimate users

Keywords： Resource allocation     Orthogonal frequency-division multiple access (OFDMA)     Imperfect channel state information    

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Double access control model of web service based ondistributed simulation system

Chen Xueqin,Wu Huizhong,Zhu Yaoqin

Strategic Study of CAE 2009, Volume 11, Issue 8,   Pages 72-78

Abstract: many simulation resources to the wide area network, which are difficult for traditional and single accessA double access control based on attributes is proposed to achieve the access control of applicationThe process flow of the access control is described in detail.The performance of resource access control realized on XACML is analyzed and tested, which proves the

Keywords： Web service security     double access control     distributed simulation system    

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Title Author Date Type Operation

Multiple-antenna techniques in nonorthogonalmultiple access: a review

Fei-yan TIAN, Xiao-ming CHEN

Journal Article

Model division multiple access for semantic communications

Ping ZHANG, Xiaodong XU, Chen DONG, Kai NIU, Haotai LIANG, Zijian LIANG, Xiaoqi QIN, Mengying SUN, Hao CHEN, Nan MA, Wenjun XU, Guangyu WANG, Xiaofeng TAO,pzhang@bupt.edu.cn,xuxiaodong@bupt.edu.cn,dongchen@bupt.edu.cn,niukai@bupt.edu.cn

Journal Article

Embracing non-orthogonalmultiple access in future wireless networks

Zhi-guo DING, Mai XU, Yan CHEN, Mu-gen PENG, H. Vincent POOR

Journal Article

On Differentiation Among Pilot Signals of Multiple Mobile Targets in Retro-Reflective Beamforming for

Xin Wang, Long Li, Tie Jun Cui, Mingyu Lu

Journal Article

Polarizationmultiplexing based duplex radio-over-fiber link for millimeterwave signal transmission to a ring of multipleradio access units

Tayyab MEHMOOD, Hina QAYYUM, Salman GHAFOOR

Journal Article

Enhanced uplink non-orthogonalmultiple access for 5Gand beyond systems

Wen-jia LIU, Xiao-lin HOU, Lan CHEN

Journal Article

Resource allocation for network profit maximization in NOMA-based F-RANs: a game-theoretic approach

Xueyan CAO, Shi YAN, Hongming ZHANG

Journal Article

Non-ideal space division multiple access and its application

Ji-ying XIANG

Journal Article

Aslotted floor acquisitionmultiple access based MACprotocol for underwater acoustic networks withRTS

Liang-fang QIAN,Sen-lin ZHANG,Mei-qin LIU

Journal Article

Performance Optimization Analysis of 2D - OOSC Codeword for OCDMA System

Li Chuanqi,Sun Xiaohan,Zhang Mingde,Ding Dong

Journal Article

Easy access to pharmaceutically relevant heterocycles by catalytic reactions involving

Ximei Zhao, Matthias Rudolph, Abdullah M. Asiri, A. Stephen K. Hashmi

Journal Article

An assessment of surrogate fuel using Bayesian multiple kernel learning model in sight of sooting tendency

Journal Article

ionic liquids based on DABCO-derived quaternary ammonium salts: A promising reaction medium in gaining access

Muhammad Faisal, Azeem Haider, Quret ul Aein, Aamer Saeed, Fayaz Ali Larik

Journal Article

Resource allocation for physical-layer security in OFDMAdownlinkwith imperfect CSI

Wei YANG, Jing MAO, Chen CHEN, Xiang CHENG, Liu-qing YANG, Hai-ge XIANG

Journal Article

Double access control model of web service based ondistributed simulation system

Chen Xueqin,Wu Huizhong,Zhu Yaoqin

Journal Article