Begell House Inc.
Telecommunications and Radio Engineering
TRE
0040-2508
79
11
2020
ON METHODS FOR DETECTING INTERFERENCE TRACES IN ACCEPTED M-SEQUENCES
919-927
10.1615/TelecomRadEng.v79.i11.10
S. A.
Belkov
Ural Federal University, 19 Mira St., Ekaterinburg, 620002, Russia
I. V.
Malygin
Ural Federal University, 19 Mira St., Ekaterinburg, 620002, Russia
P. S.
Lebedev
Ural Federal University, 19 Mira St., Ekaterinburg, 620002, Russia
cognitive communication systems
m-sequence
interference
spread
spectrum signal
neural network
Modern systems of information transmitting give attention of correctness received sequences, but they are interested ordinally only current moment of receiving. Nevertheless, taking into account the prehistory in the process of receiving may also be useful. In this case, the communication system, in addition to its main function of transmitting information, can
acquire a new quality - the ability to detect interference and identify their type. Information obtained this way about the prehistory of the origin of errors can used for correcting
parameters of transmission. Using the collected prehistory data and using a neural network, it
possible also to determine the type of interference that is in effect.
ULTRAWIDEBAND ANTENNA IN WIRELESS COMMUNICATION: A REVIEW AND CURRENT STATE OF THE ART
929-942
10.1615/TelecomRadEng.v79.i11.20
P.
Kumar
Department of Electronics & Communication Engineering, Manipal Institute of
Technology, Manipal Academy of Higher Education, Manipal, Karnataka 576104,
India
M. M. M.
Pai
Department of Information & Communication
Technology Engineering, Manipal Institute of Technology, Manipal Academy of
Higher Education, Manipal, Karnataka 576104, India
T.
Ali
Department of Electronics & Communication Engineering, Manipal Institute of
Technology, Manipal Academy of Higher Education, Manipal, Karnataka 576104,
India
Internet of Things (IoT)
ultrawideband (UWB)
group delay
fidelity factor
Ultrawideband (UWB) systems offer a unique solution to attain high-speed shortrange wireless communication and high precision location applications. Designing an UWB antenna with optimal characteristics is a major challenge because it needs to
cover broader bandwidth, stable gain, good time-domain characteristics, and impedance matching over operational bandwidth. From the last decade, UWB technology is one of the key components of the research area and a lot of UWB
antennas are designed and developed. The proposed paper highlights the promising applications and design challenges associated with the UWB antenna. It narrates the
implications in developing planar UWB antenna and fine-tuning its parameters. The challenges, future perspective and wide range of UWB antenna applications are also discussed in this paper to make it useful for further research.
26.6 GHZ HEXAGONAL SLOT MILLIMETER WAVE BAND ANTENNA FOR 5G APPLICATIONS
943-948
10.1615/TelecomRadEng.v79.i11.30
A. Pratap
Reddy
Vignan's Foundation for Science, Technology & Research, Guntur, Andhra
Pradesh-522213, India
M.
Pachiyannan
Vignan's Foundation for Science, Technology & Research, Guntur, Andhra Pradesh-522213, India
5G
hexagonal slot
millimeter wave band
smartphone
In this present work millimeter wave band antenna is designed at 26.6 GHz for 5G applications. The proposed antenna covers the frequency range from 26.43 - 26.95 GHz. The overall dimension of the proposed antenna is 20×16.5×0.5008 mm3, respectively. To achieve the desired 5G frequency band hexagonal-shaped circles and slots are incorporated. The return loss of the proposed antenna is -24 dB, the gain is 7.09 dB, and directivity is 7.95 dBi with VSWR < 2 value. The parametric study is also discussed in this work to achieve the required band with the help of a CST 3D simulator. The simulation results show that the proposed antenna can be utilized for 5G applications also smartphone applications.
DESIGN OF A 2.4 GHZ INDUSTRIAL, SCIENTIFIC, AND MEDICAL BAND MICROSTRIP PATCH ANTENNA
949-954
10.1615/TelecomRadEng.v79.i11.40
T. O.
Olawoye
Rufus Giwa Polytechnic, P.M.B 1019, Owo, Ondo State, Nigeria
A. J.
Bamisaye
Federal Polytechnic Ado-Ekiti. P.M.B. 5351, Ado Ekiti, Ekiti State, Nigeria
A. A.
Adebayo
Federal Polytechnic Ado-Ekiti. P.M.B. 5351, Ado Ekiti, Ekiti State, Nigeria
square microstrip patch antenna (QMPA)
impedance matching
communication system
This paper discusses the design process of a rectangular Microstrip patch antenna for Industrial, Scientific, and Medical (I.S.M.) Band. Antennas, as one of the primary devices of every communication system, have attracted tremendous research in recent times. This antenna design presents a good gain and directivity of 3.090 dBi and 6.992 dBi, respectively for the desired operation for which design is proposed. It uses a square design and an inset feed method to achieve a high impedance matching of 50Ω. The antenna has a length of substrate 0.65266λ1 by the width of substrate 0.79617λ and a patch dimension of 0.49341λ by 0.63691λ.
EFFECTS OF BEAMFORMING IN MICROSTRIP PATCH ANTENNA ARRAY
955-961
10.1615/TelecomRadEng.v79.i11.50
A. K.
Singh
Sikkim Manipal Institute of Technology, Sikkim Manipal University,
Majitar, Rangpo, Sikkim 737136, India; National Institute of Technology Durgapur, Mahatma Gandhi Rd, A-Zone,
Durgapur, West Bengal 713209, India
Samarendra Nath
Sur
Electronics and Communication Engineering Department, Sikkim Manipal Institute of Technology, Sikkim Manipal University, East
Sikkim, Majhitar, Rangpo, 737136, India
Rabindranath
Bera
Department of Electronics and Communication Engineering, Sikkim Manipal Institute of Technology, Sikkim Manipal University, Majitar, Rangpo, East Sikkim 737136, India
Bansibadan
Maji
National Institute of Technology Durgapur, Mahatma Gandhi Rd, A-Zone, Durgapur, West Benga 713209, India
beamforming
microstrip patch antenna (MPA) array
reflection
coefficient
gain
VSWR
beam-width
The article proposes a design and comparison of a different configuration of microstrip patch antenna array (MPA). The comparison was done between a single element patch and 2×2 (4 elements) patch antenna array. Both the configuration contains a microstrip patch antenna on the inset feed type. The designs were compared based on the study of the overall gain of the array configuration, reflection coefficient, VSWR, current distribution, and radiation pattern. From the above-said comparison, the author claims that with the increase in the number of antennae in an array configuration, there is a considerable increase in the gain and decrease in the beam-width. The approach can be termed as beamforming as well. The idea of beamforming says that with the increase in the number of antennas, the resulting beam will show the greater
magnitude and lesser beam-width which is exactly matching with the proposed work in this article. To achieve this there are two methods viz. digital and analog beamforming. The
approach followed in this paper is analog beamforming. The design was carried at 3.5 GHz on a substrate of type epoxy having a dielectric constant of 4.4.
PERFORMANCE ANALYSIS OF DGS BASED RECTANGULAR PATCH ANTENNA FOR TRI-BAND APPLICATIONS
963-972
10.1615/TelecomRadEng.v79.i11.60
V.
Asokan
Department of Electronics and Communications Engineering, Rajalakshmi
Engineering College, Thandalam-602105, India
K.
Senthilkumar
Rajalakshmi Engineering College, Chennai, Tamil Nadu, 602105, India
M.
Palanivelan
Department of Electronics and Communications Engineering, Rajalakshmi
Engineering College, Thandalam-602105, India
J.
Karthi
Rajalakshmi Engineering College, Chennai, Tamil Nadu, 602105, India
M.
Lakshmanan
Galgotias College of Engineering and Technology, 1, Knowledge Park II,
Greater Noida, Uttar Pradesh, India
E-shape patch antenna
tri-band
return loss
A less expensive miniaturized microstrip tri-band antenna to be used in microwave communication systems is proposed with this paper. By modifying the rectangular radiating element in addition to the Defected Ground plane Structure (DGS), the proposed antenna is obtained. The introduction of E-shape in the radiating patch provides the multiple band frequencies such as 7.65 GHz, 11.50 GHz, and 15.20 GHz and covers C, X, and Ku-bands. An overall dimension of the miniaturized antenna becomes 23.874 × 19.990 × 1.600 mm3 with an operating frequency band from 4-16 GHz. The HFSS is used to simulate the E-shaped antenna with the DGS antenna. The experimental validation is presented to exhibit the characteristics of the proposed antenna. The inclusion and modification of dual E-shape patch achieve increased gain and enables tri-band operations. The obtained result demonstrates a return loss of -16.05 dB, -25.02 dB, and -22.03 dB at 7.65 GHz, 11.50 GHz and 15.20 GHz, respectively.
INFLUENCE OF PULSE SHAPE IN OPTICAL DENSE WAVELENGTH DIVISION MULTIPLEXED SYSTEM
973-983
10.1615/TelecomRadEng.v79.i11.70
Narimane
Hadjadji
Telecommunications Laboratory (LT), Faculty of Science and Technology, Université 8 Mai 1945 Guelma, BP-401, Guelma 24000, Algeria
R.
Hamdi
Telecommunications Laboratory (LT), Université 8 Mai 1945 Guelma, BP-401, Guelma 24000, Algeria
optical fiber communication
DWDM network
format modulation
duty cycle
OptiSystem
The transmission performance of ultra-high capacity up to 1.28 Tbps dense wavelength division multiplexing system for Non-Return to Zero (NRZ) and Return to Zero (RZ) modulation formats have been analyzed in this work. The transmission of 64-channels has been achieved over the 50 km × N Span of optical linkin 200, 100, and 50 GHz channel spacing. Three dispersion compensation schemes have been implemented at the optical link to find the most robust modulation formats at a high-speed optical transmission.
The system performances have been presented in terms of Q-factor, bit error rate, and eye diagram.
FEATURES OF ACOUSTIC NOISE OF SMALL UNMANNED AERIAL VEHICLES
985-995
10.1615/TelecomRadEng.v79.i11.80
Valerii
Semenets
Kharkiv National University of Radio Electronics
Vladimir M.
Kartashov
Kharkov National University of Radio Engineering and Electronics, 14, Nauka Ave, Kharkiv, 61166, Ukraine
V. I.
Leonidov
Kharkiv National University of Radio Electronics, 14 Nauka Ave, Kharkiv 61166, Ukraine
background noise
period range
signal period
model-correlation analysis
The paper considers basic provisions concerning the formulation and solution of the problem of detecting small unmanned aerial vehicles (drones) based on the analysis of acoustic fields generated by the drone.
The concept of the potential detection range is introduced as the maximum attainable value of the distance between the drone and the place of installation of the receiving microphone, at which the acoustic signal exceeds the level of thermal noise of the receiving device by ten decibels.
Distinctive features of drone noise from background noise are detected by the method of model correlation analysis introduced by the authors in previous works. As a result, three-dimensional structures are formed in the shape of a matrix of correlation coefficients between a sample of drone noise signals or background noise and a model of the component of the signal. As a result of comparing the three-dimensional structures of the drone noise and background noise, it is concluded that the analysis of period fluctuations at small time intervals makes it possible to increase the distinguishability of signs of the drone signal in developed background noise.
The averaging is calculated along the axis of the time shift of the three-dimensional structure, the dependence of the correlation coefficient on the period of the model with its subsequent normalization to the maximum. It is concluded that the parametrization of such dependence will make it possible to formalize the process of detection and classification of signals relative to the model of the detected drone.
ENHANCING VIDEO STREAMING TRANSMISSION IN 5 GHZ FANET DRONES PARAMETERS
997-1007
10.1615/TelecomRadEng.v79.i11.90
Gh. A. Qas
Marrogy
College of Engineering, Department of Communication and Computer Engineering, Cihan University-Erbil, Kurdistan Region, Iraq
video streaming
buffer size
FANET
5 GHz
AP beacon interval
Recently small and silent Unmanned aerial vehicles (UAV) (drones) have become extensively available and used in different sensitive areas around the globe, i.e., Security, military, monitoring, police, and many more, with advanced capability feature of video recording integration while flying. All these devices use dual frequencies of IEEE 802. 11n 2.4 GHz and 5 GHz during data transmission, and due to the mobility of these devices, it's hard to deliver the date between the drones efficiently. Therefore, it's very important to optimize and enhance the transmission for videos streaming between these drones with minimum delay and higher throughput. In this paper, an attempt will be made to optimize and enhance video streaming
transmission performance of 5 GHz Frequency drones with a fixed trajectory, in terms of delay, throughput, and retransmission attempts.
Published 9/4/2020
SPATIO-TEMPORAL VARIATION OF NONLINEARITY IN TROPOSPHERIC ZENITH WET DELAY OVER WEST AFRICA
1009-1016
10.1615/TelecomRadEng.v79.i11.100
S. T.
Ogunjo
Federal University of Technology, Ilesha Rd., P.M.B. 704, Akure 340001,
Ondo State, Nigeria
J. B.
Dada
Elizade University, P.M.B. 002, Ilara-Mokin 340271, Ondo State, Nigeria
I. A.
Fuwape
Michael and Cecilia Ibru University, Ughelli North, Delta State, Nigeria
zenith wet delay
nonlinear dynamics
West Africa
Saastamoinen
model
chaos
radio communication links
Hurst exponent
long memory
determinism
Quantification of uncertainty in tropospheric zenith wet delay is important for planning a satellite communication link budget. The objective of this study is to determine the
spatiotemporal variation of wet delay within the West African region using chaos theory. Evidence of chaos in wet delay will imply a short prediction horizon. Wet delay from January
1981 to December 2010 was computed using the Saastamoinen model. Seasonal variation was observed in wet delay over the region with high values along the coastal regions during the dry season. Using determinism and approximate entropy, the coastal regions of West Africa were found to exhibit chaos which reduces in intensity towards the north of Africa. Wet delay values in the inland region of West Africa possess short term memory while specific regions along the coast show long term memory. Our findings show that long term prediction of wet delay along the coast of West Africa will pose a great challenge for planning the communication link budget.