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i-manager's Journal on Communication Engineering and Systems (JCS)

Current Issue Vol. 13 Issue 2

Design and Development of Patient Care Voice Actuated Bed in Hospital
A Low Profile Dual U Shaped Monopole Antenna for WLAN/WiMAX/C Band Applications
A Miniaturized Dual L Shaped with Truncated Ground Rectangular Monopole Antenna for 5G and Wireless Communications
A Centre C-Shaped Dual Band Rectangular Monopole Antenna for Wi-Fi and Wireless Communication
Impact of Subchannel Symbol Rates on WSS Filtering Penalty in Elastic Optical Networks: A Comparative Study

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Volume 11 Issue 2 July - December 2022

Research Paper

Analytical Research on Optical Phase Shift Modulation Scheme with Maximum Modulation Efficiency for Analog and Digital Signals

Vikas Agrawal* , Koushik Basak, Rajesh Kumar Bahl*

*-*** Space Applications Centre, Ahmedabad, Gujarat, India.

Agrawal, V., Basak, K., and Bahl, R. K. (2022). Analytical Research on Optical Phase Shift Modulation Scheme with Maximum Modulation Efficiency for Analog and Digital Signals. i-manager’s Journal on Communication Engineering and Systems, 11(2), 1-10. https://doi.org/10.26634/jcs.11.2.19048

Abstract

This paper presents the analytical research and characterization of optical Binary Phase Shift Keying (BPSK) for single-tone sinusoidal and digital signals. The mathematical analysis and simulation for optimal modulation depth are proposed in this paper for maximum efficiency of the output modulated signal. The modulation depth is analysed with suitable Radio Frequency (RF) drive voltage for message signal and the effect of modulation depth on carrier suppression and higher order harmonics over fundamental tone is analysed theoretically and with simulation. To achieve phase modulation in this work, an external modulation technique via the Mach-Zehnder Modulator (MZM) is used, and an optical source using a narrow line width Distributed Feed Back (DFB) laser is used to minimise phase noise. The simulation and characterization results strongly support the mathematical analysis of the proposed criteria for suitable RF drive over half wave voltage for optimal detection and maximum message signal efficiency.

References

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[16]. Yaakob, S., Mahmood, R. M., Zan, Z., Rashidi, C. B. M., Mahmud, A., & Anas, S. B. A. (2021, May). Modulation index and phase imbalance of dual-sideband optical carrier suppression (DSB-OCS) in optical millimeter-wave system. In Photonics, 8(5), 153. https://doi.org/10.3390/photonics8050153

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Research Paper

Enhanced Gain and Compact Size Microstrip Patch Antenna by Suppressing the Surface Waves

Rakesh Kumar* , Ram Kumar**

* Department of Electronics and Communication Engineering, SVCET Chittoor - Sri Venkateswara College of Engineering and Technology, Andhra Pradesh, India.

** Department of Computer Science and Engineering, SVCET Chittoor - Sri Venkateswara College of Engineering and Technology, Andhra Pradesh, India.

Kumar, R., and Kumar, R. (2022). Enhanced Gain and Compact Size Microstrip Patch Antenna by Suppressing the Surface Waves. i-manager’s Journal on Communication Engineering and Systems, 11(2), 11-18. https://doi.org/10.26634/jcs.11.2.17289

Abstract

In this paper, an enhanced gain and compact size microstrip patch antenna by suppressing the surface waves is presented for L band and S band applications. The surface waves are suppressed by using a heterogeneous substrate. A heterogeneous substrate is prepared by removing partially the substrate surrounding the patch. He suggested antenna works for a dual band resonance frequency. The first resonance frequency of the antenna is 1.585 GHz with a return loss of -17. 942 dB and second resonance frequency of the antenna is 2.335 GHz with - 13. 7785 dB return loss. The -10 dB impedance bandwidth of the antenna is 11.9 MHz (1.5809 - 1.55928 GHz) and 44.8 MHz (2.324 - 2.3469 GHz), which is the suitable bandwidth for Global Positioning Systems (GPS), WLAN and satellite communication. Compared to a standard patch antenna the suggested antenna has obtained a high gain of 7.99 dBi with reduced size up to 34% of a defected ground structure (DGS) on a a heterogeneous substrate. Using HFSS, the performance of patch antenna with DGS on a heterogeneous substrate are compared with a homogeneous substrate, a homogeneous substrate with DGS and without DGS on a heterogeneous substrate.

References

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[2]. Borakhade, D. K., & Pokle, S. B. (2015). Pentagon slot resonator frequency reconfigurable antenna for wideband reconfiguration. AEU-International Journal of Electronics and Communications, 69(10), 1562-1568. https://doi.org/10.1016/j.aeue.2015.06.012

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[10]. Tangthong, N., Moeikham, P., & Akatimagool, S. (2016, June). A compact multi band CPW-Fed monopole antenna using L-shaped and straight slots. In 2016 13th International Conference on Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), (pp. 1-4). IEEE. https://doi.org/10.1109/ECTI Con.2016.7561292

[11]. Tsai, L. C. (2014). A dual-band bow-tie-shaped CPWfed slot antenna for WLAN applications. Progress in Electromagnetics Research, 47, 167-171. https://doi.org/10.2528/PIERC14011002

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Research Paper

Tri-Band Microstrip Patch Antenna Designed for WLAN Applications

Mrityunjay Kumar* , Chandan, Bijayalaskhmi*, Umesh Singh****

*-**** Department of Electronics and Communication Engineering, Dr. Rammanohar Lohia Avadh University, Ayodhya, Uttar Pradesh, India.

Kumar, M., Chandan, Tiwar, P., and Singh, U. (2022). Tri-Band Microstrip Patch Antenna Designed for WLAN Applications. i-manager’s Journal on Communication Engineering and Systems, 11(2), 19-24. https://doi.org/10.26634/jcs.11.2.18972

Abstract

Wireless applications require compact antennas capable of operating over a wide range of frequencies with minimal power. Microstrip patch antennas are generally preferred for transceivers that operating at microwave frequencies due to their low profile and easy installation. The performance of antennas has been evaluated using the metrics collected from of return loss, Voltage Standing Wave Ratio (VSWR) and radiation pattern. The overall size of the antenna has dimensions of 34 mm × 28 mm × 1.6 mm, fabricated on FR4 substrate having relative permittivity of 4.4. The proposed antenna achieves maximum return loss of -21.30 dB at 2.9 GHz, -23.51 dB at 5.3 GHz and -19.17 dB at 10 GHz.

References

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Review Paper

Resource Allocation Schemes in 5G: Survey and Challenges

M. Sharmila* , R. V. S. Satyanarayana**

*-** Department of Electronics and Communication Engineering, SVU College of Engineering, SV University, Tirupati, India.

Sharmila, M., and Satyanarayana, R. V. S. (2022). Resource Allocation Schemes in 5G: Survey and Challenges. i-manager’s Journal on Communication Engineering and Systems, 11(2), 25-33. https://doi.org/10.26634/jcs.11.2.18984

Abstract

In telecommunications, 5G is the fifth-generation of mobile networks with the enhanced features of higher data rates, lower power consumption, and extremely reduced latency over 4G. The spatial resource reused by 5G networks which is to facilitate customers with desired Quality of Service (QoS) by developing small cells into the coverage of macro cells. However, there is limited spectrum reuse and mutual interference among different users, an efficient Resource Allocation (RA) algorithm is required to reduce interference and to attain spectrum sharing. Many existing technologies have been proposed to solve some of the 5G challenges. In this paper, various resource allocation algorithms are analyzed and identify the challenging issues on where to focus attention for future research work.

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Review Paper

Review on High Capacity Transmission with Multi Core Fibers

Pradeep Kumar Sharma* , Ashutosh Kumar Singh, Manisha Yadav*, Sanjay Chauhan****

*-**** Department of Electronics and Communication, Institute of Engineering Technology, Dr. Rammanohar Lohia Avadh University Ayodhya, India.

Sharma, P. K., Singh, A. K., Yadav, M., and Chauhan, S. (2022). Review on High Capacity Transmission with Multi Core Fibers. i-manager’s Journal on Communication Engineering and Systems, 11(2), 34-42. https://doi.org/10.26634/jcs.11.2.18973

Abstract

This paper describes cases where the new type of fiber called Multi-core fiber that can resolve the current Internet capacity transmission problems with low crosstalk and attenuation. India is a data-hungry country, and with the help of the Internet, it's moving towards a strong economy and a digital India. A few years ago, no one knew that such a type of digitalization would occur and India would participate in it so rapidly. Currently, the world is moving towards basic phones to Smart Phones, Broadband, Wi-Fi equipment, Over the Top Platforms, IT Hub formation, and much more internet traffic is ongoing, so transmission with standard single-core cable is very tough. Multi Core Fiber (MCF) can resolve this problem. This article, looks at all of the options for multi-core fibers, particularly trench-assisted multi-core fibers.

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Sharma, P. K., Singh, A. K., Yadav, M., and Chauhan, S. (2022). Review on High Capacity Transmission with Multi Core Fibers. i-manager’s Journal on Communication Engineering and Systems, 11(2), 34-42. https://doi.org/10.26634/jcs.11.2.18973

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