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Journal articles on the topic 'Multi Antenna Wireless System'

Author: Grafiati

Published: 6 September 2023

Last updated: 31 July 2025

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1

Asis, Leah A. de. "Multi Purpose Wireless Communication Antenna Design: Microstrip Antenna." Journal of Research in Science and Engineering 6, no. 12 (2024): 8–12. https://doi.org/10.53469/jrse.2024.06(12).02.

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This paper presents a comprehensive overview of microstrip antennas for wireless communication applications. Microstrip antennas have gained significant attention due to their compact size, low profile and ease of integration with modern electronic circuits. The design principles, configurations and performance characteristics of microstrip antennas were highlighting their suitability for various wireless communication systems such as Wi - Fi, Bluetooth, GPS and more. Additionally recent advancements and future trends in microstrip antenna technology are explored, providing insights into ongoi

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2

Azari-Nasab, T., CH Ghobadi, B. Azarm, and M. Majidzadeh. "Triple-band operation achievement via multi-input multi-output antenna for wireless communication system applications." International Journal of Microwave and Wireless Technologies 12, no. 3 (2019): 259–66. http://dx.doi.org/10.1017/s1759078719001302.

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AbstractA multi-input multi-output (MIMO) antenna is designed and discussed for multi-band applications. The constituent antennas are composed of four L-shaped elements and a ground plane. When placed beside each other to form a MIMO antenna, a T-bar shaped parasitic structure is also embedded between the antennas on the backside of the substrate to increase the inter-element isolation. The triple-band performance of the antenna is observed at 2.15–2.73 GHz, 3.1–3.9 GHz, and 5.04–6 GHz. The isolation level of more than 20 is seen over the operating frequency range. The fabricated prototype of

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3

Zheng, Zi Wei. "Iterative Channel Estimation Scheme for the WLAN Systems with the Multiple-Antenna Receivers." Advanced Engineering Forum 6-7 (September 2012): 871–75. http://dx.doi.org/10.4028/www.scientific.net/aef.6-7.871.

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Alleviate the multipath delay spread and suitable for broadband transmission efficiency, orthogonal frequency division multiplexing wireless local area network (WLAN) is widely used to assist inverse fast Fourier transform and fast Fourier transform operation domain. Orthogonal frequency division multiplexing is a blow to the broadcast channel multipath fading and high data throughput, transmission, wireless fading channel method, which is widely used to support high performance bandwidth-efficient wireless multimedia services. Several times in the transmitter and receiver antenna technology a

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Zeng, Wenxin, Wei Wang, and Sameer Sonkusale. "Temperature Sensing Shape Morphing Antenna (ShMoA)." Micromachines 13, no. 10 (2022): 1673. http://dx.doi.org/10.3390/mi13101673.

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Devices that can morph their functions on demand provide a rich yet unexplored paradigm for the next generation of electronic devices and sensors. For example, an antenna that can morph its shape can be used to adapt communication to different wireless standards or improve wireless signal reception. We utilize temperature-sensitive shape memory alloys (SMA) to realize a shape morphing antenna (ShMoA). In the designed architecture, multiple conjoined shape memory alloy sections form the antenna. The shape morphing of this antenna is achieved through temperature control. Different temperature th

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Wang, Huan, and Jian Zhou. "Brief Analysis of MIMO Channel and Antenna." Advanced Materials Research 912-914 (April 2014): 952–55. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.952.

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MIMO (Multi-input Multi-output) is an abstract mathematical model used to describe the multi-antenna wireless communication system. the transmitter can use a plurality of separate antennas transmit signals simultaneously. This paper first analyzes MIMO physical model, and then the MIMO channel characteristics and capacity for analysis, analysis of MIMO antenna characteristics and finally focus on the correlation coefficient

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Moradikordalivand, Alishir, Chee Yen Leow, Tharek Abd Rahman, Sepideh Ebrahimi, and Tien Han Chua. "Wideband MIMO antenna system with dual polarization for WiFi and LTE applications." International Journal of Microwave and Wireless Technologies 8, no. 3 (2015): 643–50. http://dx.doi.org/10.1017/s175907871500032x.

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In this paper a wideband multi-input multi-output (MIMO) antenna system for WiFi-LTE wireless access point (WAP) application is proposed. The MIMO antenna system consists of two common element microstrip-fed monopole antennas with dual polarization. Physically closed integration of MIMO antenna elements requires a special technique to increase the isolation between the antennas. A novel structure of parasitic element is introduced to improve the isolation between the antennas. The proposed MIMO antenna system is simulated and optimized using CST Microwave Studio. The designed antenna system is

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7

Arun, Henridass, and Gulam Nabi Alsath M. "CPW fed circularly polarized wideband pie-shaped monopole antenna for multi-antenna techniques." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 37, no. 6 (2018): 2109–21. http://dx.doi.org/10.1108/compel-12-2017-0515.

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Purpose This paper aims to present the design and implementation of a circularly polarized co-planar waveguide (CPW) fed wideband pie-shaped monopole antenna for multi-antenna techniques. Multi-antenna techniques are promising solutions for higher data rate and enhanced reliability of wireless applications. They find numerous applications in 4G/5G networks and in most wireless standards such as wireless local area networks (WLAN), wireless fidelity and worldwide interoperability for microwave access systems to enhance the channel capacity without additional spectrum by means of multi-path prop

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Pandey, Shraddha, and Pankaj Vyas. "Review of Reconfigurable Microstrip Patch antenna for Wireless Application." International Journal on Recent and Innovation Trends in Computing and Communication 7, no. 6 (2019): 25–28. http://dx.doi.org/10.17762/ijritcc.v7i6.5317.

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In recent time, world have seen a rapid growth in wireless communication. Development in antenna from single band to dual band and multi band had made the antenna system more compact. A frequency reconfigurable microstrip antenna using a PIN diode for multiband operation is using many application and hot research area. In this paper, reconfigurable microstrip patch antennas and their types like frequency, polarization, radiation pattern and gain are described.

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Praveena, S., and Sunakar Prusty. "Frequency Reconfigurable Antenna using PIN Diodes." International Journal of Engineering and Advanced Technology 9, no. 1s5 (2019): 66–70. http://dx.doi.org/10.35940/ijeat.a1019.1291s519.

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With the increase in wireless applications, there is a need for compact antennas that adapt their behavior with changing system requirements or environmental conditions. Here adapt implies the antenna should be able to alter operating frequencies, impedance bandwidths, polarizations, radiation patterns. These all features are provided by the “Reconfigurable antenna”. The important feature of reconfigurable antenna is that, they provide the same throughput as a multi-antenna system. A compact frequency reconfigurable antenna is designed with the aid of Ansoft HFSS that provides multiple frequen

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10

Castel, Thijs, Patrick Van Torre, Emmeric Tanghe, et al. "Improved Reception of In-Body Signals by Means of a Wearable Multi-Antenna System." International Journal of Antennas and Propagation 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/328375.

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High data-rate wireless communication for in-body human implants is mainly performed in the 402–405 MHz Medical Implant Communication System band and the 2.45 GHz Industrial, Scientific and Medical band. The latter band offers larger bandwidth, enabling high-resolution live video transmission. Although in-body signal attenuation is larger, at least 29 dB more power may be transmitted in this band and the antenna efficiency for compact antennas at 2.45 GHz is also up to 10 times higher. Moreover, at the receive side, one can exploit the large surface provided by a garment by deploying multiple

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11

Wu, Yulin, Shuoyao Ji, and Yuanbo Duan. "Research Status and Progress of Multi-antenna Technology." Frontiers in Science and Engineering 4, no. 3 (2024): 10–14. http://dx.doi.org/10.54691/54zep648.

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With the continuous upgrading of wireless communication technology, the types of mobile service businesses continue to increase, and the number of communication terminal equipment has also increased sharply, greatly increasing people's demand for wireless data traffic and network coverage. As one of the research hotspots of wireless transmission, multi-antenna technology can improve system transmission rate, improve spectrum utilization and expand network coverage. According to the different implementation methods, this paper discusses the research status of three typical multi-antenna technol

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Rahi, Kareem Dhahir, Leana Jabble Taklef, and Musa H. Wali. "Enhancement isolation antenna to multi-port for wireless communication." Open Engineering 12, no. 1 (2022): 866–77. http://dx.doi.org/10.1515/eng-2022-0348.

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Abstract Currently, there is a rapid increase in demand for the transmission of large amount of data with extreme accuracy, which is usually performed by the antenna system. Therefore, this work aims to design an antenna system that has the potential of improving the performance of such system in terms of reducing the antenna size, and expanding the bandwidth. First, a single-port antenna was designed after calculating the basic requirements and then a comprehensive analysis of the antenna performance was carried out to reach optimum performance. Then, the antenna was connected to two, three,

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Chaudhary, Abhay. "Utilizing ultra-wideband with wireless telecommunications applications microstrip." International Journal of Advances in Applied Sciences 10, no. 4 (2021): 283. http://dx.doi.org/10.11591/ijaas.v10.i4.pp283-287.

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<p>The small aspect, as well as low margins of the microstrip chip amplifier (MPA) is being used in a contact system. For the last few times within the last year's research, the majority of work with MPA has been centered towards designing the portable antenna design. Wireless networking systems may be fitted with a new ultrawideband digital monopoly antenna. Throughout this exponentially changing environment, and dual multi-standard antennas play a crucial role in the implementation of cell towers. This paper presents the nature of an ultra-wideband (UWB)-based antenna array for the sha

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Chafale, Sumit, V. K. Taksande, and S. A. Dhale. "Performance Estimation of MIMO-OFDM for New Radio signals IN LTE Networks for Precise indoor signaling." International Journal of Environmental Sciences 11, no. 1s (2025): 774–87. https://doi.org/10.64252/dcsz6g29.

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Considering that the radio frontend system for an indoor BS consists of both the RF amplifier circuit as well as the antenna subsystem, it is imperative that the study of compact antennas and their practical implementations becomes further more relevant with the advancement of wireless technological advancements. In this context, the study of high efficiency Single Input Single Output (SISO) antennas has already been carried out for modern wireless BS. Further, efficient Multi-Input Multi-Output (MIMO) antennas are also being used for many high power and medium power BS applications. Additiona

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15

Wong, Hang, Wei Lin, Laure Huitema, and Eric Arnaud. "Multi-Polarization Reconfigurable Antenna for Wireless Biomedical System." IEEE Transactions on Biomedical Circuits and Systems 11, no. 3 (2017): 652–60. http://dx.doi.org/10.1109/tbcas.2016.2636872.

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16

Evran, Serap Kilinc, and Ozlem Coskun. "Design of a Dual Band 2.45 GHz and 5.2 GHz Microstrip MIMO Antenna with T-Geometry based on AMC Reflector." WSEAS TRANSACTIONS ON COMMUNICATIONS 23 (September 5, 2024): 34–42. http://dx.doi.org/10.37394/23204.2024.23.6.

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Multiple input-multiple output (MIMO) is one of the important applications of WLAN wireless communication technology. In wireless communication systems, especially with the developing services, an increase in data speed and access quality is required in indoor WLAN systems for multi-media data transmission. In new-generation wireless communication systems, high transmission performance and high data rates can be achieved with MIMO systems that use multiple antennas in the sender and receiver. In the MIMO system, parallel data transmission can be made over multiple antennas at the same time and

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Hidayat, M. Reza, Reza Agung Permana, and Susanto Sambasri. "Konversi Antena Mimo 2x2 Frekuensi 2,4 Ghz Menjadi 5,5 Ghz Menggunakan Patch Bowtie Berbasis Dual Slot Segi Empat dan Single Slot Segitiga." TELKA - Telekomunikasi Elektronika Komputasi dan Kontrol 7, no. 2 (2021): 161–73. http://dx.doi.org/10.15575/telka.v7n2.161-173.

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Perkembangan antena radar semakin cepat dan beragam, salah satunya adalah antena MIMO (multiple output). Antena MIMO banyak digunakan untuk teknologi 5G karena efisiensi spectral dan fekuensi yang tinggi. Antena MIMO juga merupakan suatu sistem yang menggunakan multi antena baik pengrim (Transmitter) maupun penerima (receiver) yang bisa mengatasi kelemahan pada sistem komunikasi wireless. Penelitian ini merancang sebuah antena mikrostrip MIMO 2X2 dengan menggunakan patch bowtie untuk mengkonversi frekuensi dari 2,4 GHz menjadi 5,5 GHz dengan menambahkan dual slot segiempat dan single slot segi

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18

Wassie, Dereje Assefa, Ignacio Rodriguez, Gilberto Berardinelli, et al. "An Agile Multi-Node Multi-Antenna Wireless Channel Sounding System." IEEE Access 7 (2019): 17503–16. http://dx.doi.org/10.1109/access.2019.2895412.

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19

M, Karthick, and Kalaivaani P.T. "OPTIMIZED MULTI-DIMENSIONAL ANTENNA SYSTEM FOR ENHANCED SIGNAL RECEPTION IN COMMUNICATION NETWORKS WITHIN REGULATORY LIMITS." ICTACT Journal on Microelectronics 11, no. 1 (2025): 2043–50. https://doi.org/10.21917/ijme.2025.0346.

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The increasing demand for high-performance wireless communication systems necessitates advanced antenna technologies that can ensure maximum signal strength without breaching regulatory standards. Conventional antenna systems often suffer from limited directionality and signal loss due to environmental interference and suboptimal configurations, affecting signal quality and system reliability. This study proposes a novel multi-dimensional antenna system designed using a hybrid optimization algorithm integrating Particle Swarm Optimization (PSO) and Genetic Algorithm (GA). The antenna configura

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20

Muttair, Karrar Shakir, Oras Ahmed Shareef, Hazeem Baqir Taher, and Faiz Arith. "A New Geometry of Multi-band MIMO Antenna for 5G and 6G Systems." Journal of Techniques 6, no. 4 (2024): 48–56. https://doi.org/10.51173/jt.v6i4.2596.

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The demand for high-efficiency, small-sized ultrawide-band (UWB) antennas has risen due to the need for fast wireless communication systems. In this manuscript, we propose a novel geometry for a 4-port multi-in multi-out (MIMO) antenna with an L-shaped structure that solves the limitations of current designs in UWB applications. The dimensions and thickness of an antenna design are 18×18×1.5875 mm. It operates in multiple bands, such as Ku, K, and millimeter wave (mmWave) spectrum ranging from 17 to 100 GHz. This feature is ideal for small fifth-generation (5G) and sixth-generation (6G) wirele

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Alor, C. G.., and A. C. Nnaji. "Enhancing Signal Reception in Wireless Communication Systems using Antenna Diversity." European Journal of Engineering and Environmental Sciences 4, no. 1 (2020): 1–13. https://doi.org/10.5281/zenodo.7682387.

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Wireless communication services have been growing at a rapid pace in recent years. As the number of network users increases, the demand for reliable signal reception also increases. So, there is an increasing need for efficient link performance. Therefore, antenna diversity is very efficient in mitigating the effect of multi-path fading. The field data measurement of received signal strength from a transmitting base station which was collected using spectrum analyzer of Model AT5011. The distances of the measurement points from the transmitting base station was recorded using the global positi

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V.Prashanth, K., N. Sai Venkatesh, B. Umamaheswari, et al. "Design of UWB Antenna With Multi slot for Wireless Communication." International Journal of Engineering & Technology 7, no. 2.7 (2018): 507. http://dx.doi.org/10.14419/ijet.v7i2.7.10872.

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A Compact dual slot ultra-wide band (UWB) Antenna for WLAN and X-Band applications is proposed. The projected antenna is designed for the planar ultra-wide band (UWB) antenna and ultra-wide band (UWB) with two band dismissals. The proposed antenna overall size is 30x40x1.6. The antenna comprises of Rectangular patch imprinted on the Flame Resistant (FR4) substrate with 50Ω input impedance. FR-4 is a composite material made out of fiberglass fabric woven with an epoxy pitch cover that is fire safe (self-dousing). "FR" implies fire resistant, and means that the material meets the standard. This

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23

Bang, Inkyu, Hyunwoo Nam, Woohyuk Chang, et al. "Channel Measurement and Feasibility Test for Wireless Avionics Intra-Communications." Sensors 19, no. 6 (2019): 1294. http://dx.doi.org/10.3390/s19061294.

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Wireless avionics intra-communication (WAIC) refers to a wireless communication system among electronic components (e.g., sensors and actuators) that are integrated or installed in an aircraft and it is proposed to replace heavy and expensive wired communication cables. Recently, the use of a frequency band (4.2–4.4 GHz) for the WAIC (so-called, WAIC band) has been approved by international telecommunication union (ITU). Accordingly, several existing wireless protocols such as IEEE 802.11 and IEEE 802.15 are being considered as candidate techniques for the intra-avionics sensor network. In thi

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Muttair, Karrar Shakir, Ali Zuhair Ghazi Zahid, Oras Ahmed Shareef, Raed Hameed Chyad Alfilh, Ahmed Mohammed Qasim Kamil, and Mahmood Farhan Mosleh. "Design and analysis of wide and multi-bands multi-input multi-output antenna for 5G communications." Indonesian Journal of Electrical Engineering and Computer Science 26, no. 2 (2022): 903. http://dx.doi.org/10.11591/ijeecs.v26.i2.pp903-914.

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A <span>good antenna design has played an essential role in the design of wireless communication systems, international companies are looking for the best design that suits their products in terms of size, bandwidth, gain, cost, and performance. In this paper, three antenna models are designed for fifth-generation (5G) communications, the first model is a single antenna, the second model is a two-ports multi-input multi-output (MIMO) antenna, and the third model is a four-ports MIMO antenna. The geometric dimensions of a single antenna are 20×37×1.6 mm<sup>3</sup>, the two-po

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Dilli, Ravilla. "Design and Feasibility Verification of 6G Wireless Communication Systems with State of the Art Technologies." International Journal of Wireless Information Networks 29, no. 1 (2021): 93–117. http://dx.doi.org/10.1007/s10776-021-00546-3.

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AbstractFrequencies above 100 GHz are the promising frequency bands for 6G wireless communication systems because of the abundant unexplored and unused spectrum. The increasing global demand for ultra-high spectral efficiencies, data rates, speeds and bandwidths in next-generation wireless networks motivates the exploration of peak capabilities of massive MIMO (Multi–Input–Multi–Output) wireless access technology at THz bands (0.1–10 THz). The smaller wavelengths (order of microns) of these frequencies give an advantage of making high gain antennas with smaller physical dimensions and allows m

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26

Yang, Hang, Wei Tian, Jianhua Li, and Yang Chen. "Multi-Band Analog Radio-over-Fiber Mobile Fronthaul System for Indoor Positioning, Beamforming, and Wireless Access." Sensors 25, no. 7 (2025): 2338. https://doi.org/10.3390/s25072338.

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In response to the urgent demands of the Internet of Things for precise indoor target positioning and information interaction, this paper proposes a multi-band analog radio-over-fiber mobile fronthaul system. The objective is to obtain the target’s location in indoor environments while integrating remote beamforming capabilities to achieve wireless access to the targets. Vector signals centered at 3, 4, 5, and 6 GHz for indoor positioning and centered at 30 GHz for wireless access are generated centrally in the distributed unit (DU) and fiber-distributed to the active antenna unit (AAU) in the

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27

Cao, Xinran. "Review on filtering antenna technology for 5G mobile system." Journal of Physics: Conference Series 2649, no. 1 (2023): 012012. http://dx.doi.org/10.1088/1742-6596/2649/1/012012.

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Abstract In recent years, people’s increased demand for wireless communication technology fuels the development of 5G communication technology growth. Electronic equipment in the current wireless communication system is developing in the direction of low power consumption, multi-function, miniaturization, and integration, which also puts higher technical standards for RF front-end. In recent years, the wireless communication industry is building lighter, thinner, and smaller products with multifunction. The integration of filter and antenna is one of the important ways for the miniaturization

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Abd, Reem Hikmat, and Hussein A. Abdulnabi. "Reconfigurable graphene-based multi-input multi-output antenna design for THz applications." Bulletin of Electrical Engineering and Informatics 12, no. 4 (2023): 2193–202. http://dx.doi.org/10.11591/beei.v12i4.4956.

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This paper presents a compact graphene-based multi-input multi-output (MIMO) antenna for wireless communications operating in frequency band (0.1-10) THz. This work has been performed with four ports microstrip antennas based on 37×88 μm² a silicon dioxide (Sio₂) substrate and copper on the ground layer, with high isolation by a series of unit cells of graphene selected between adjacent patches to reduce the transmission coefficient and antenna size. Graphene's chemical potential will change by changing the connected DC voltage, leading to bandwidth and resonant frequency variation. The simula

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Abd, Reem Hikmat, and Hussein A. Abdulnabi. "Reconfigurable graphene-based multi-input multi-output antenna design for THz applications." Bulletin of Electrical Engineering and Informatics 12, no. 4 (2023): 2193–202. http://dx.doi.org/10.11591/eei.v12i4.4956.

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This paper presents a compact graphene-based multi-input multi-output (MIMO) antenna for wireless communications operating in frequency band (0.1-10) THz. This work has been performed with four ports microstrip antennas based on 37×88 μm² a silicon dioxide (Sio₂) substrate and copper on the ground layer, with high isolation by a series of unit cells of graphene selected between adjacent patches to reduce the transmission coefficient and antenna size. Graphene's chemical potential will change by changing the connected DC voltage, leading to bandwidth and resonant frequency variation. The simula

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30

Mishra, Manisha, Anindita Khan, and Jibendu Roy. "Design of multiple-beam microstrip smart antenna for massive MIMO applications." Facta universitatis - series: Electronics and Energetics 37, no. 4 (2024): 655–69. https://doi.org/10.2298/fuee2404655m.

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To improve the capacity of a radio communication system, MIMO (multiple input, multiple output) wireless technology is used, where multiple antennas are installed at both the transmission and reception ends. At the receiving end, by combining the received signals from all antennas, the fading effect can be reduced, which increases signal-to-noise ratio (SNR) and minimizes the error rate. Wireless networks in multi-user environments need massive MIMO (MMIMO) systems as multiple antenna networks. The MMIMO installs large antenna arrays in the base stations, using a large number of transceivers w

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Rashid, Zhwan M., Bakhtiar A. Karim, and Asaad M. J. Al-Hindawi. "Medical Implantable Antennas for IoT Based Health Monitoring Applications: A Review." Journal of Engineering 31, no. 5 (2025): 148–71. https://doi.org/10.31026/j.eng.2025.05.09.

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Recently, implantable antennas have gained prominence in biomedical research owing to their compact design and efficient performance and extensive potential in biomedical and wireless communication applications. One such application is in the biomedical field, where the designed system must function within human body tissues and interact with an external device. To implement this communication framework, both advanced software and proper hardware design are essential. The antenna that is designed for biomedical applications must fulfill several requirements including energy efficiency, compact

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Shen, Aiguo, Guangsong Yang, and Dezhi Wei. "Performance of multi-antenna wireless systems based on time reversal." Journal of Physics: Conference Series 2079, no. 1 (2021): 012025. http://dx.doi.org/10.1088/1742-6596/2079/1/012025.

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Abstract 5G wireless mobile communication system is faced with massive equipment access, information security and effective transmission is worth paying attention to. Wireless physical layer security mainly uses encryption principle to enhance the security of information transmission, while time reversal technology combines its electromagnetic characteristics and physical channel characteristics to improve the security performance of wireless communication system. In this paper, a signal transmission model of wireless multi-antenna communication system based on time reversal cavity is proposed

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Dahrouj, Hayssam, and Wei Yu. "Coordinated beamforming for the multicell multi-antenna wireless system." IEEE Transactions on Wireless Communications 9, no. 5 (2010): 1748–59. http://dx.doi.org/10.1109/twc.2010.05.090936.

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T. G., Shivapanchakshari, and H. S. Aravinda. "PSO-CCO_MIMO-SA: A particle swarm optimization based channel capacity optimzation for MIMO system incorporated with smart antenna." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 6 (2020): 6276. http://dx.doi.org/10.11591/ijece.v10i6.pp6276-6282.

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With the radio channels physical limits, achieving higher data rate in the multi-channel systems is been a biggest concern. Hence, various spatial domain techniques have been introduced by incorporating array of antenna elements (i.e., smart antenna) in recent past for the channel limit expansion in mobile communication antennas. These smart antennas help to yield the improved array gain or bearm forming gain and hence by power efficiency enhanmaent in the channel and antenna range expansion. The use of smart antenna leads to spatial diversity and minimizes the fading effect and improves link

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Shivapanchakshari, T. G., and S. Aravinda H. "PSO-CCO_MIMO-SA: A particle swarm optimization based channel capacity optimzation for MIMO system incorporated with smart antenna." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 6 (2020): 6276–82. https://doi.org/10.11591/ijece.v10i6.pp6276-6282.

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With the radio channels physical limits, achieving higher data rate in the multi-channel systems is been a biggest concern. Hence, various spatial domain techniques have been introduced by incorporating array of antenna elements (i.e., smart antenna) in recent past for the channel limit expansion in mobile communication antennas. These smart antennas help to yield the improved array gain or bearm forming gain and hence by power efficiency enhanmaent in the channel and antenna range expansion. The use of smart antenna leads to spatial diversity and minimizes the fading effect and improves link

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36

Sun, Xiao Jin, and Zhi Wen Hu. "Research on Wireless Communication Technology Based on Cooperative Diversity." Applied Mechanics and Materials 416-417 (September 2013): 1561–64. http://dx.doi.org/10.4028/www.scientific.net/amm.416-417.1561.

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Cooperative diversity technique refers to that in the context of multi-users, several single antenna terminals create a virtual multi-antenna system to realize the dispatch and diversity of the periodic line by means of share each others antenna. The remarkable strong point of the cooperative diversity technique is that it can reduce the transmission power of the system, improve its handing capacity and effectively decrease its error rate. This paper is going to analyze the application of the cooperative diversity technique on the wireless communication technology and present the main problems

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Ahmad, Ashfaq, Geun Ok Lee, and Dong-you Choi. "Design and Performance Evaluation of a Compact Frequency-Reconfigurable Coplanar-Waveguide-Fed Slotted Patch Antenna for Multi-Band Wireless Communication." Electronics 12, no. 18 (2023): 3889. http://dx.doi.org/10.3390/electronics12183889.

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A miniaturized and low-profile planar antenna is a crucial part of any wireless communication system. To cover additional narrowband services and to reduce system complexity, antennas in portable devices should offer several operating bands. In this paper, we propose a coplanar-waveguide-fed (CPW-fed), flexible, and compact slotted patch frequency reconfigurable antenna with a compact size of 20 × 24 mm2. The designed antenna employs a low-cost Rogers 5880 substrate with a thickness of 0.127 mm. This choice of substrate ensures cost-effectiveness while preserving the desired performance of the

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Antunes, Filipa, Amélia Ramos, Tiago Varum, and João N. Matos. "Concept and Design of a Multi-Polarization Reconfigurable Microstrip Antenna with Symmetrical Biasing Control." Sensors 24, no. 8 (2024): 2408. http://dx.doi.org/10.3390/s24082408.

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Wireless communication systems have grown rapidly, moving towards being highly compact, intelligent, and flexible to adapt to changing operating requirements. Multifunctional and highly versatile antennas are key in this development to ensure system quality. Reconfigurable antennas, particularly regarding polarization, allow frequency reuse and enable the mitigation of fading effects. This work presents a square microstrip patch antenna operating in the ISM 5.8 GHz band with reconfigurable polarization by controlling its feeding. This antenna has four different states through the application o

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Wang, Xinhai, Liqiong Wu, Hua Chen, Wei Wang, and Zhaoping Liu. "Frequency-Reconfigurable Microstrip Patch Antenna Based on Graphene Film." Electronics 12, no. 10 (2023): 2307. http://dx.doi.org/10.3390/electronics12102307.

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Fifth-generation mobile communication systems must connect to multiple wireless networks. In order to enable a single device to match the frequency bands of multiple wireless networks, it is usually necessary to use multiple single-band or multi-band antennas, which occupy a large amount of space inside a given device. Using frequency-reconfigurable antennas to replace multiple single-function antennas is an effective way to solve this problem. In this paper, we propose a frequency-reconfigurable microstrip patch antenna based on graphene film, which fills the slot of the radiating patch with

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Tariq, Muhammad Haroon, Shuai Zhang, Christos Masouros, and Constantinos B. Papadias. "Energy Efficient Multi-Active/Multi-Passive Antenna Arrays for Portable Access Points." Micromachines 15, no. 11 (2024): 1351. http://dx.doi.org/10.3390/mi15111351.

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This article is about better wireless network connectivity. The main goal is to provide wireless service to several use cases and scenarios that may not be adequately covered today. Some of the considered scenarios are home connectivity, street-based infrastructure, emergency situations, disaster areas, special event areas, and remote areas that suffer from problematic/inadequate network and possibly power infrastructure. A target system that we consider for such scenarios is that of an energy-efficient self-backhauled base station (also called a “portable access point—PAP”) that is mounted on

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Zheng, Zi Wei. "Frame Synchronization for the DTMB Systems with the Multiple-Antenna Receivers." Advanced Engineering Forum 6-7 (September 2012): 434–38. http://dx.doi.org/10.4028/www.scientific.net/aef.6-7.434.

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Faced with the challenges of modern communication, high data throughput requirements, extensive research has been paid to broadband modulation. The multi-carrier modulation is one of the most important wide band modulation techniques. Orthogonal frequency division multiplexing (OFDM) is an effective blow to the broadcast channel multipath fading and high bit rate transmission multi-carrier modulation technology of wireless channels, it is widely used in modern digital television terrestrial broadcasting (DTTB) system to support performance bandwidth-efficient multimedia services with the aid o

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Zheng, Zi Wei. "Iterative Channel Estimation for the Chinese Digital Television Terrestrial Broadcasting Systems with the Multiple-Antenna Receivers." Advanced Engineering Forum 6-7 (September 2012): 439–44. http://dx.doi.org/10.4028/www.scientific.net/aef.6-7.439.

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Orthogonal frequency division multiplexing is an effective against multipath fading and high data throughput wireless channel transmission technology. Assistance with the inverse fast Fourier transform and fast Fourier transform operation, orthogonal frequency division multiplexing modulation and demodulation operations of the system convenient and convenient hardware implementation, orthogonal frequency division multiplexing, so in the modern digital television terrestrial broadcasting the system is widely used to support high performance bandwidth-efficient multimedia services. Broadband mul

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She, Feng, Hsiao Hwa Chen, and Hongyang Li. "Joint Angular and Time Diversity of Multi-Antenna CDMA Systems in Wireless Fading Channels." International Journal of Wireless Networks and Broadband Technologies 1, no. 1 (2011): 1–14. http://dx.doi.org/10.4018/ijwnbt.2011010101.

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In this paper, a multi-antenna based receiver structure for direct sequence code division multiple access (DS/CDMA) system is proposed. The proposed scheme exploits the excellent time resolution of a CDMA RAKE receiver and uses an antenna array beamforming structure to resolve multipath returns in both angular and time domains. A much higher diversity gain than that based only on the time domain diversity can be achieved. This work suggests a new space-time diversity paradigm, namely angular-time diversity, which differs from traditional Alamouti-type space-time coded schemes. The impairments

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Alabed, Samer, Amer Alsaraira, Nour Mostafa, et al. "Two-way differential strategy for wireless sensor networks." Bulletin of Electrical Engineering and Informatics 12, no. 6 (2023): 3499–508. http://dx.doi.org/10.11591/eei.v12i6.6121.

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In this paper, a novel optimal two-way amplify and forward (AF) differential beamforming method for wireless sensor network is proposed. The proposed method is an advanced signal processing technique used to enhance the performance and reliability of the communication link by exploiting the diversity provided by multiple antennas. Unlike current state-of-the-art methods which require the knowledge of channel state information (CSI) at both transmitting and receiving antennas or at least at the receiving antennas, the suggested method does not need CSI at any transmitting or receiving antenna.

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Dang, Khoa Le, Tung Thanh Vu, Tu Thanh Nguyen, and Phuong Huu Nguyen. "Indoor optical wireless MIMO-OFDM system." Science and Technology Development Journal 17, no. 1 (2014): 5–16. http://dx.doi.org/10.32508/stdj.v17i1.1238.

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Indoor optical wireless systems have attracted attention, because they allow high-speed transmission without electromagnetic interference. Multi Input Multi Output (MIMO) techniques are very promising in providing high data rate or providing performance over fading channels. Orthogonal frequency division multiplexing (OFDM) can send multiple high speed signals by using orthogonal carrier frequencies. In this paper, we propose an optical wireless MIMO-OFDM system to achieve better performance. The signal of each optical transmit antenna is detected by using zero forcing (ZF) algorithm. We use t

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Gardill, M., G. Fischer, R. Weigel, and A. Koelpin. "Single-element based ultra-wideband antenna array concepts for wireless high-precision 2-D local positioning." Advances in Radio Science 11 (July 4, 2013): 297–305. http://dx.doi.org/10.5194/ars-11-297-2013.

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Abstract. We generally categorize the approaches for ultra-wideband antenna array design, and consequently propose simplified concepts for antenna arrays for a high-precision, ultra-wideband FMCW radar 2-D local positioning system to obtain robustness against multi path interference, perform angle of arrival analysis, as well as instantaneous heading estimation. We focus on low-cost and mechanical robust, industrial-application ready antennas. The antenna arrays are optimized for operation in the 5 GHz to 8 GHz frequency range and are designed towards supporting full omnidirectional 360° as we

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Taneja, Ashu, and Nitin Saluja. "A Comparison of Norm Based Antenna Selection and Random Antenna Selection with Regard to Energy Efficiency in Wireless System with Large Number of Users." International Journal of Sensors, Wireless Communications and Control 10, no. 2 (2020): 189–96. http://dx.doi.org/10.2174/2210327909666190319145555.

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Background: The paper considers the wireless system with large number of users (more than 50 users) and each user is assigned large number of antennas (around 200) at the Base Station (BS). Objective: The challenges associated with the defined system are increased power consumption and high complexity of associated circuitry. The antenna selection is introduced to combat these problems while the usage of linear precoding reduces computational complexity. The literature suggests number of antenna selection techniques based on statistical properties of signal. However, each antenna selection tec

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Chung, Ming-An, and Cheng-Wei Hsiao. "Dual-Band 6 × 6 MIMO Antenna System for Glasses Applications Compatible with Wi-Fi 6E and 7 Wireless Communication Standards." Electronics 11, no. 5 (2022): 806. http://dx.doi.org/10.3390/electronics11050806.

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Multi-user multiple-input and multiple-output (MU-MIMO) systems are the mainstream of current antenna design. This paper proposes a dual-band 6 × 6 MIMO glasses antenna for Wi-Fi 6E and Wi-Fi 7 indoor wireless communication. The six antennas have the same structure, all of which are F-shaped monopole antennas. They are on the left and right temples, at the upper and lower ends of the left and right frames, which effectively uses the space of the glasses. The substrate uses FR4 (εr=4.4, tanδ=0.02). The antenna design is compact (9 mm × 50 mm × 0.8 mm) and the glasses model is made of FR4. The o

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Dey, Nilanjan, and Amira S. Ashour. "Antenna Design and Direction of Arrival Estimation in Meta-Heuristic Paradigm." International Journal of Service Science, Management, Engineering, and Technology 7, no. 3 (2016): 1–18. http://dx.doi.org/10.4018/ijssmet.2016070101.

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Antennas are considered as a significant component in any wireless system. There are numerous factors and constraints that affect its design. Therefore, recently several algorithms are developed to allow the designers optimize the antenna with respect to numerous different criteria, general constraints and the desired performance characteristics. In recent years there has been an increasing attention to some novel evolutionary techniques, such as Genetic Algorithm (GA), Particle Swarm Optimization (PSO), Ant Colony Optimization (ACO), Bacteria-Foraging (BF), Biogeography Based Optimization (BB

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Liu, Kechen, Dapeng Sun, Tao Su, Xu Zheng, and Chaobo Li. "Design of Flexible Multi-Band Miniature Antenna Based on Minkowski Fractal Structure and Folding Technique for Miniature Wireless Transmission System." Electronics 12, no. 14 (2023): 3059. http://dx.doi.org/10.3390/electronics12143059.

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In light of the predicament concerning the small gain and narrow frequency range of miniature antennas, this paper employs the implementation of a fractal repeating array structure and a double-layer folding antenna structure. Through these measures, the miniature antenna is endowed with a high gain and an expansive frequency range, all within its diminutive size. The paper presents an exquisite and high-gain flexible multi-band antenna, utilizing a dielectric substrate composed of the flexible material polyimide, with a thickness of merely 0.1 mm. The implementation of this flexible material

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