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10th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT)

作者： Ding, Chao Feng Zhang, Xiu Yin Xue, Cheng Dai South China Univ Technol Sch Elect & Informat Engn Guangzhou 510640 Peoples R China

ISBN: (纸本)9781538627204

In this paper, a dual-element MIMO antenna without adding any decoupling structure is presented. The MIMO antenna consists of two symmetric inverted-L elements with the antenna spacing of only 9 mm (0.1 lambda at 3.5 GHz). The isolation between antennas is reduced by pattern diversity. vertical bar S-11 vertical bar < -10 dB and vertical bar S-21 vertical bar < -16 dB are achieved over the band from 3.48-3.6 GHz. Compared with the antenna without decoupling, the isolation is improved by 11 dB, whereas the envelope correlation coefficient (ECC) is reduced from 0.14 to 0.04.

关键词： Pattern diversity multiple-input multiple-output antenna

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Antenna selection for MIMO systems over Weibull–Gamma fading channel

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Perspectives in Science 2016年 8卷 475-478页

作者： Keerti Tiwari Davinder S. Saini Sunil V. Bhooshan Jaypee University of Information Technology Waknaghat Solan (H.P.) 173234 India Chandigarh College of Engineering and Technology Chandigarh 160019 India

In this paper, multiple-input multiple-output (MIMO) system performance is evaluated over composite Weibull–Gamma (WG) fading channel using antenna selection (AS) techniques. WG fading channel is considered to model multipath and shadowing effects. The capacity and error rate performance can be improved by exploiting channel state information on the transmitter side (CSIT) while reducing hardware complexity. Therefore, AS techniques are used to exploit CSIT. Although, optimal AS improves the system performance at the cost of enhanced complexity, sub-optimal AS technique is preferred to improve capacity performance with reduced complexity level. Also, AS is used for orthogonal space time block code (OSTBC) to improve error performance of MIMO system over WG fading channel.

关键词： multiple-input multiple-output Antenna selection Channel state information on the transmitter side Weibull–Gamma fading Orthogonal space time block code

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Outage Analysis of MIMO Multiuser Broadcast Scheduling with MMSE Receiver

Outage Analysis of MIMO Multiuser Broadcast Scheduling with ...

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IEEE/CIC International Conference on Communications in China

作者： Rongsheng Li Hui Gao Tiejun Lv Key Laboratory of Trustworthy Distributed Computing and Service Ministry of Education School of Information and Communication Engineering Beijing University of Posts and Telecommunications

ISBN: (纸本)9781479941452

In future wireless communication systems, multiple-input multiple-output (MIMO) technique and multi-user scheduling may play a key role in enhancing link reliability and spectral efficiency. In addition, linear signal processing is near-optimal when the number of the antennas becomes very large in the next generation wireless network. In this paper, we aim to investigate overall outage performance of multi-user MIMO broadcast system using minimum mean squared error receivers. Several scheduling algorithms are considered over Rayleigh fading channel. Tight and closed-form upper bounds of the overall outage probabilities are derived for two round-robin scheduling algorithms and two feedback-based opportunistic scheduling algorithms. Our analysis indicates that there exists an performance gap between opportunistic scheduling algorithm and stream-specific opportunistic scheduling algorithm. This gap is related to the number of transmit data streams N_t and the number of users K, and the gap becomes larger as N_t and K increase.

关键词： MIMO communication Rayleigh channels broadcast communication least mean squares methods multi-access systems radio links radio receivers scheduling telecommunication network reliability MIMO multiuser broadcast scheduling MMSE receiver Rayleigh fading channel antennas feedback-based opportunistic scheduling algorithms linear signal processing minimum mean squared error multiple-input multiple-output outage analysis round-robin scheduling algorithms stream-specific opportunistic scheduling algorithm wireless communication systems Interference MIMO Receivers Scheduling Scheduling algorithms Signal to noise ratio Upper bound

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Investigation of the fifth generation non-orthogonal multiple access technique for defense applications using deep learning

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JOURNAL OF DEFENSE MODELING AND SIMULATION-APPLICATIONS METHODOLOGY TECHNOLOGY-JDMS 2022年第4期19卷 829-838页

作者： Malladi, Ravisankar Beuria, Manoj Kumar Shankar, Ravi Singh, Sudhansu Sekhar Gudlavalleru Engn Coll CC-48 Seshadri Rao Knowledge V 521356 Gudlavalleru India Kalinga Inst Ind Technol Bhubaneswar Odisha India Madanapalle Inst Technol & Sci Madanapalle 517325 Andhra Pradesh India

In modern wireless communication scenarios, non-orthogonal multiple access (NOMA) provides high throughput and spectral efficiency for fifth generation (5G) and beyond 5G systems. Traditional NOMA detectors are based on successive interference cancellation (SIC) techniques at both uplink and downlink NOMA transmissions. However, due to imperfect SIC, these detectors are not suitable for defense applications. In this paper, we investigate the 5G multiple-input multiple-output NOMA deep learning technique for defense applications and proposed a learning approach that investigates the communication system's channel state information automatically and identifies the initial transmission sequences. With the use of the proposed deep neural network, the optimal solution is provided, and performance is much better than the traditional SIC-based NOMA detectors. Through simulations, the analytical outcomes are verified.

关键词： Non-orthogonal multiple access deep learning successive interference cancellation multiple-input multiple-output deep neural network

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An optical MIMO transmission system over 80km of two-mode fiber using DSP

An optical MIMO transmission system over 80km of two-mode fi...

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Asia Communications and Photonics Conference and Exhibition (ACP)

作者： Li, Rongling Fang, Wuliang Tang, Chanjuan Chi, Nan Fudan Univ Informat Sch Dept Commun Sci & Engn State Key Lab ASIC & Syst 220 Handan Rd Shanghai 200433 Peoples R China

Simulations confirm stable MIMO transport of two channels over a two-mode fiber. Successful reception is achieved over 80km two-mode fiber at a bit error rate of 10(-6) -enabled by a new signal recovery algorithm we p... 详细信息

ISBN: (纸本)9780819489616

关键词： multiple-input multiple-output Two-mode Fiber Offset Launching Digital Signal Processing

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Dynamic Sliding Mode Control of MIMO Uncertainty System and Application in Rudder-fin 11

Dynamic Sliding Mode Control of MIMO Uncertainty System and ...

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11th World Congress on Intelligent Control and Automation

作者： Han, Yaozhen Xiao, Hairong Shandong Jiaotong Univ Sch Informat Sci & Elect Engn Jinan Shandong Peoples R China North China Elect Power Univ Sch Control & Comp Engn Beijing Peoples R China

ISBN: (纸本)9781479958252

In order to get better stabilized effect while keeping course, the ship rudder/fin joint nonlinear system controller based on dynamic sliding mode is designed. Aiming at a class of multiple-input multiple-output nonlinear system such as rudder/fin joint system, the control law is designed based on dynamic sliding mode method. The mathematical model of rudder/fin joint nonlinear system with four degrees of freedom is established based on dynamics theorem and separated modeling theory. Simulation research is carried out under disturbed condition. Simulation results show the designed control algorithm can weaken chattering greatly and improve the robustness. The average rolling angle is within +/- 2 degrees while keeping the course angle and a good stabilized effect is realized.

关键词： ship rudder/fin joint dynamic sliding mode double power reaching law multiple-input multiple-output

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Terrestrial Broadcast Technologies for Next Generation Broadcast Wireless Systems

Terrestrial Broadcast Technologies for Next Generation Broad...

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International Conference on Communication Workshop

作者： Yajun Kou Fang Wang Jinfeng Tian Wenjun Zhang Yunfeng Guan Dazhi He Yijun Shi Shanghai Adv. Res. Inst. Shanghai China

ISBN: (纸本)9781467363068

The next generation broadcast wireless (NGB-W) system is aimed to provide high-speed, ubiquitous, and secure tri-play services to massive users. In this paper, a new terrestrial broadcast solution for the NGB-W system is proposed. The system and the key techniques of the proposed solution are introduced. The performance of the proposed solution is evaluated by simulations. It is shown that the performance of the proposed solution is better than that of the second generation terrestrial broadcast systems of Digital Video Broadcasting (DVB).

关键词： NGB-W terrestrial broadcast low-density parity check code bit-interleaved coded modulation multiple-input multiple-output carrier aggregation

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MIMO OFDM Index Modulation with Circular-Shift-based Activation Pattern for Rapidly Time-Varying Channels

MIMO OFDM Index Modulation with Circular-Shift-based Activat...

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IEEE Vehicular Technology Conference

作者： Fangchao Yao Jianping Zheng Zhenzhou Li State Key Laboratory of Integrated Service Networks Xidian University

ISBN: (纸本)9781509016990

In this paper, the extension of the orthogonal frequency division multiplexing (OFDM) index modulation (IM) from single-antenna systems to multiple-antenna systems is studied. And a multiple-input multiple-output (MIMO) OFDM IM scheme with circular-shift-based activation pattern is proposed for the rapidly time-varying (RTV) channel. In the proposed scheme, the IM is applied in the joint antenna and sub-carrier dimension. Concretely, a constructive generation method of the IM pattern matrix based on the circular shift of a sparse column vector is presented, which makes the frequency-domain signal is sparse in both antenna and sub-carrier dimensions. The performance of the proposed scheme in the RTV channel is demonstrated by computer simulations.

关键词： multiple-input multiple-output Orthogonal frequency division multiplexing Index modulation Rapidly time-varying channel Orthogonal frequency division multiplexing multiple input multiple output systems ANTENNA SYSTEM column vector Instant messaging time-varying channels Subcarriers ANTENNA antennae ROOM TEMPERATURE VULCANISING Ritonavir

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Semi-blind Iterative Joint Channel Estimation and K-Best Sphere Decoding for MIMO

Semi-blind Iterative Joint Channel Estimation and K-Best Sph...

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IEEE Pacific Rim Conference on Communications, Computers and Signal Processing

作者： I. Dey G. G. Messier S. Magierowski Sheng Chen School of Electrical and Computer Engineering University of Calgary Electronics and Computer Science Faculty of Physical and Applied Sciences University of Southampton

ISBN: (纸本)9781479915002

An efficient and high-performance semi-blind scheme is proposed for multiple-input multiple-output (MIMO) systems by iteratively combining channel estimation with K-Best Sphere Decoding (SD). To avoid the exponentially increasing complexity of Maximum Likelihood Detection (MLD) while achieving a near optimal MLD performance, K-best SD is considered to accomplish data detection. Semi-blind iterative estimation is adopted for identifying the MIMO channel matrix. Specifically, a training-based least squares channel estimate is initially provided to the K-best SD data detector, and the channel estimator and the data detector then iteratively exchange information to perform the decision-directed channel update and consequently to enhance the detection performance. The proposed scheme is capable of approaching the ideal detection performance obtained with the perfect MIMO channel state information.

关键词： multiple-input multiple-output K-Best Sphere Decoding Joint channel estimation and data detection multiple input multiple output systems channel estimation DECODING channel matrix Spheres Iterative Metachromatic Leukodystrophy minimum lethal dose

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A MAC Protocol with Multi-Packet Reception for MIMO Ad Hoc Networks

A MAC Protocol with Multi-Packet Reception for MIMO Ad Hoc N...

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International Conference on Wireless Communications, Networking and Mobile Computing

作者： Miao Cui Yinglie Cao Shaoliang Lin Xiaomu Zhang School of Information Guangdong University of Technology China Electronics Technology Group Corporation No.7 Research Institute

ISBN: (纸本)9781612846842

multiple-input multiple-output (MIMO) systems are capable of simultaneously capturing more than one packet. Such capability is known as Multi-Packet Reception (MPR), which is new way to improve performance of Ad Hoc Networks. In order to effectively enhance throughput of Ad Hoc Networks, a novel MAC protocol (MIMO-MAC) with MIMO links that takes into account MPR is proposed. It can receive more than one RTS before responding CTS, which maximizes transmission links simultaneously. Receiver determines links according to the number of its own antennas and RTS. Compare to the existing protocol, it allows many communications at the same time in one competitive area. Finally, simulations are implemented in terms of load and source nodes number in OPNET environment, results show that MIMO-MAC outperforms CSMA/CA and CSMA/CA (k).

关键词： Ad Hoc Networks multiple-input multiple-output Multi-Packet reception MAC protocol

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