Single-RF MIMO-OFDM system with beam switching antenna

Sohn, Illsoo; Gwak, Donghyuk

doi:10.1186/s13638-016-0538-z

Cited by 8 publications

(7 citation statements)

References 31 publications

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“…Additionally, articles that only used the terms smart/ digital/electronic service, without subsequently focusing on these topics, were not considered. One example is a technical analysis and presentation of strategies for network scenarios (Sohn and Gwak 2016).…”

Section: Identifying Relevant Literaturementioning

confidence: 99%

Focusing the customer through smart services: a literature review

Dreyer

Olivotti

Lebek³

et al. 2019

Electron Markets

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Smart services serve customers and their individual, continuously changing needs; information and communications technology enables such services. The interactions between customers and service providers form the basis for co-created value. A growing interest in smart services has been reported in the literature in recent years. However, a categorization of the literature and relevant research fields is still missing. This article presents a structured literature search in which 109 relevant publications were identified. The publications are clustered in 13 topics and across five phases of the lifecycle of a smart service. The status quo is analyzed, and a heat map is created that graphically shows the research intensity in various dimensions. The results show that there is diverse knowledge related to the various topics associated with smart services. One finding suggests that economic aspects such as new business models or pricing strategies are rarely considered in the literature. Additionally, the customer plays a minor role in IS publications. Machine learning and knowledge management are identified as promising fields that should be the focus of further research and practical applications. Concrete ideas for future research are presented and discussed and will contribute to academic knowledge. Addressing the identified research gaps can help practitioners successfully provide smart services.

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Section: Identifying Relevant Literaturementioning

confidence: 99%

Focusing the customer through smart services: a literature review

Dreyer

Olivotti

Lebek³

et al. 2019

Electron Markets

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show abstract

“…The length, width, and height of the single antenna affects the resonant frequency, radiation pattern, and isolation. Moreover, while simulating identical and symmetric antennas, exciting one antenna at a time and terminating other feeding ports with 50 Ohm load reduces the simulation time considerably …”

Section: Working Principlementioning

confidence: 99%

4 × 4 MIMO antenna design with folded ground plane for 2.4 GHz WLAN applications

Ahmad¹,

Mohyuddin

Choi

et al. 2018

Micro & Optical Tech Letters

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A 4 × 4 MIMO antenna design for packed conditions is presented for WLAN applications. The proposed antenna consists of a radiating patch, a parasitic patch, and a folded ground plane to achieve the desired resonant frequency, return loss, bandwidth, and isolation for the worst case scenario. The antennas are fed individually by 50 Ohm coaxial feedings. The proposed antenna design has measured 73 MHz bandwidth >10 dB, and exhibits isolation better than 10 dB over the desired band, when there is no physical separation between antennas. The prototype for the 4 × 4 MIMO is constructed and the results are compared. The simulation and measurement results are well in agreement.

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“…This technique not only solves the size problem of MIMO antennas, but reduces the mutual coupling between antennas, which greatly improves the efficiency of MIMO systems. The single RF link MIMO-OFDM system was proposed [22][23][24] to realize the purpose of multicarrier signal transmission. Several signals were superimposed in the time domain and the OFDM waveform was finally formed.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Multiple-Input Multiple-Output Radar System Based on RF Single-Link Technology

Yang

et al. 2018

Symmetry

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Multiple-input multiple-output (MIMO) radar is playing an important role in military and civilian fields. However, radio frequency (RF) multi-links have a large data-processing capacity and the system is bulky and complex. Therefore, a single-link RF MIMO has been the subject of heated discussed in recent years. Single-link technology shares the same regularity with that of the multi-link MIMO system, which makes the MIMO system simpler in structure without affecting its performance. In this study, a 2 × 2 array single RF link MIMO radar at X band was designed by combining MIMO radar with the concept of a single RF link in the communication field, and a simulation platform for studying its properties was established using SystemVue software. The whole system is controlled by the exclusive OR (XOR) operation results of two transmission signals, and one signal can control the antenna-switching signal to form a variety of orthogonal bases. The received two original signals are demodulated and the control signals enter the corresponding matched filters. The signal is processed by fast Fourier transformation (FFT) and the cell-averaging constant false alarm rate algorithm (CA-CFAR) is used to judge the signal. For multiple measurements, the Monte Carlo method was adopted to obtain its mean value as the final result. Compared with the traditional MIMO radar performance in acquiring the target position, speed, and detection probability, the results show that the computation time can be greatly reduced (due to decrease in the number of links in MIMO radar system) without any deterioration in the MIMO radar performance. The single RF link technology provides a broad prospect for the miniaturization of small radar applications.

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Single-RF MIMO-OFDM system with beam switching antenna

Cited by 8 publications

References 31 publications

Focusing the customer through smart services: a literature review

Focusing the customer through smart services: a literature review

4 × 4 MIMO antenna design with folded ground plane for 2.4 GHz WLAN applications

Design and Analysis of Multiple-Input Multiple-Output Radar System Based on RF Single-Link Technology

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