Journal of Analog and Digital Communications

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Total articles ≅ 14
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R. Deepalakshmi, J. Jeyarani, R. Vanitha, M. Shivashankari
Abstract:
Free-space optical communication (FSO) is a technology that entails the transmission of information through the atmosphere from one point to the other. Optical signal traversing the atmospheric channel suffers attenuation due to scattering and absorption of the signal by aerosols, fog, atmospheric gases. This work is focused on improving the performance of the system by increasing the capacity using WDM optical networks in free space using QAM modulation technique. The system is evaluated by using eight independent information sources and analyzing the BER and eye diagrams.
Ajay Bhatia, Vikrant Sharma
Abstract:
Given that they do not benefit from CMOS technology scaling, analogue integrated circuits are soon becoming a constraint in terms of the cost and performance of nanoscale integrated systems. This has led to some debate about whether analogue circuits are still useful in the era of digital technology. The usual reaction is that analogue circuitry will always be needed, if not everywhere, then at least in interface circuits that exchange data with physically analogue environments. The fact that matter is made up of discrete atoms and molecules, that basic physical quantities like electromagnetic radiation and electric charge are quantized, and even that information is transmitted as discrete pulses in biological systems all make the physical world less "intrinsically analog" than it first appears. In other words, it appears more and more plausible that the foundation for our regular analogue experiences is a distinct or digital one.
Himani Yadav, Sanjeev Seth
Abstract:
In this study, enhanced linearity and wide linear range current adder and subtractor circuits based on cascode current mirrors are presented. Among other analogue signal processing devices, the described circuits can be employed in operational transconductance amplifiers (OTA), Gm-C filters, and amplifiers. To enhance current mirroring performance, the suggested circuits use the cascode current mirror topology. A 1.8-volt supply and TSMC 0.18-micron CMOS technology were used to model the suggested circuits. The suggested circuits have an allowed error percentage of less than 2.5% and perform well in the current range of 0 to 80 A. The outcomes of the SPICE simulation have shown how well the proposed circuits work.
Srishti Grewal, Prashant Dubey, Mohan Roy, Devendra Anant
Abstract:
The development of technology has made it feasible to switch from mechanical and electromechanical electricity, water, and gas metres to digital ones with more sophisticated functionalities. With these new tools at their disposal, users are transitioning from a totally passive to an active position, where everyone can take control of their consumption patterns and establish their own resource-saving strategy. "Communication" is the essential term. The ability of utilities and users to connect thanks to new technology opens up new possibilities for the wise use of fundamental resources.
Komal Sahota
Abstract:
A type of signal transmission known as "digital transmission" involves the discrete time variation of two values, one of which represents the binary number "0" and the other "1." Voltage or electrical potential is often the variable amount in copper cabling. Fiber-optic wiring or wireless communication use variations in intensity or any other physical quantity. Digital signals use discrete values to transmit binary data through a communication path like a network cable or a telecommunications link. On a serial transmission line, a digital signal is transmitted one bit at a time. Analog and digital methods can both be used to store data or information. On a serial transmission line, a digital signal is transmitted one bit at a time. Analog and digital methods can both be used to store data or information.
T. Tirupal, N. Chakradhar Reddy, M. Jayasurya Raj, Shaik Jeelan
Abstract:
With the horizon still brim-full, effective efforts to contain the COVID-19 pandemic require a high level of attention to offset severely impacted community fitness and the global financial system. Without the potent antiviral and expensive scientific resources, WHO recommends a number of ways to limit infection rate contamination and avoid depleting the medical system's limited resources. Several of the non-pharmaceutical treatments are to wear a mask. A mask is one of the non-medical techniques that can be used to reduce the quantity of infected droplets ejected by affected individuals. Nonetheless of debates concerning clinical sources and mask variations, all countries require public use of masks that cover the nose and mouth. This project hopes to achieve a more accurate and useful method that could efficiently contribute to community fitness.
Dipti Chavan, Aniket Kamble, Aditya Khadsare, Vaibhav Chougule
Abstract:
Electronics and communication is the most important field. In this paper, we can describe how much safety is in the Automobile industry. In this paper, we are using uno-Arduino. The different types of sensors facilities are also provided using key points. The different sensors are provided to check visitor count. In this system, we can monitor and control all the safety precautions their one IoT web platform. This helps in the proper utilization of drivers and helps in avoiding accidents. This paper can be implemented in any two-wheelers, heavily loaded trucks, small SUVs, compact cars. In our paper, the electronics machine/components will be automatically working with using of Arduino program. The proposed wireless sensor platform is an attempt to develop more safety devices that can be used in multiple areas such as homes, schools, and public utilities to reduce accidents. This Advanced Driver Assists system will provide real-time accident detections and monitoring usage information that helps in real-time by using GSM, GPS, and sensors.
Basavalinga Swamy, C M Tavade, Kishan Singh
Abstract:
A roundabout microstrip fixes receiving wire is planned in this paper. The recommended receiving wire for remote neighborhood [WLAN] utilizes a 2.4GHz resounding recurrence. There are numerous different sorts of receiving wires, however, we'll zero in on roundabout radio wires, which are worked to support the resounding recurrence referenced previously. As a result of this recurrence determination, the radio wire is ideal for utilization in a remote Local Area Network [WLAN]. The High-Frequency Structure Simulator programming HFSS's optometric is used to make the proposed receiving wire more exact and proficient. Receiving wire plan enhancement is a term used to depict the way toward further developing the radio wire Model of a microstrip line. The HFSS programming was utilized to imitate the technique. This radio wire is made out of FR4 material, and the conditions for roundabout Patch configuration are presented and approved by all-around reproduced results. This radio wire has a 50-ohm input impedance and is based on an FR4 Epoxy dielectric substrate with a general permittivity of 4.4, a thickness of 1.60mm, and an overall permittivity of 4.4. The fundamental design and low profile characteristics of the recommended radio wire simplify it to deliver and are ideal for use in Wi-Fi organizations.
Sanket Kumar Srivastava, Prabha Kant Dwivedi
Abstract:
Local binary patterns are best known because of their robust texture-defining capacities and digital watermarking used to prove multimedia content copyright. This work presents an overview of the binary watermark in the image blocks by changing the pixels conveyed by the LBP pattern of the neighborhood. However, different photo blocks can have the same LBP pattern, which in the watermark process can lead to incorrect detection. In other words, without changing your watermark message, one can change the host image deliberately. Moreover, before watermark embedding, there is no encryption procedure, which leads to another potential security problem. In this paper, we examine the identical process of LBP synthesis or reverse LBP and its suitability for the digital watermarking image. The process of LBP synthesis varies by pixel values so that the LBP from these pixels is the required synthesizable value. Due to the LBP synthesis character, the watermark needs to be integrated with only a few pixels of the given block. The results show that rotational, JPEG compression, and scalable attacks are robust with the technique. This LBP synthesis could also be used to justify ownership using watermark sensor data.
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