International Journal of Sensors Wireless Communications and Control - Volume 10, Issue 6, 2020

A high performance low power phase frequency detector is designed and simulated. The various different parameters of the circuit are obtained through various type of simulations. We worked mainly upon the power dissipation, power supply, input frequency range and its area. The proposed PFD will have the locking capability i.e. to lock at the edges either on the rising or falling edge w.r.t the reference and the feedback signa Read More

Background & Objective: Organizations have started evaluating business applications which are on hosted model. Organizations need not to focus on choosing the deployment model or buying the hardware or setup infrastructure instead they are choosing business application which are easily available on SaaS model or platform model. Organizations are analyzing the adoption of Cloud Computing service models due to reduce Read More

Background: The squarer or squaring circuit is extensively used in communication systems as a mathematical function with applications of frequency doublers, Finite Impulse Response (FIR) filters, peak amplitude detectors, digital processors and analog multipliers, etc. and especially for square law detection circuits. Objectives: Vedic multipliers are popular mainly for their simplicity in the literature of digital multipliers. Me Read More

Background & Objective: In this paper contactless human fall detection system has been designed, developed and tested. Methods: Continuous wave radar system is implemented at 2.10 GHz of frequency. It consists of transmitter and receiver section. In Radio Frequency (RF) transmitter system is developed with the use of frequency synthesizer, power amplifier and patch antenna for the transmission of 2.10 GHz. Similarl Read More

Background & Objective: SVD based audio watermarking schemes met the requirements of imperceptibility, having moderate payload and are robust to most common signal processing attacks. But, when the watermarked audios are compressed at higher compression i.e. compression at lower bit rate, the percentage retrieval of the watermark is reduced. Since the audios posted on the networked environment i.e. world w Read More

Background: Several rectangular Microstrip Patch Antennas (MPAs) with different substrates are designed to achieve high gain and high data rate for the 5G cellular band. One of these which uses a Polymethacrylate / Rohacell 51 as a substrate material provides a high gain of 10.054 dB and a moderate bandwidth of 80 MHz (2.28 % of f0). Objectives: This MPA can be preferred for 5G cellular base station antenna in 3.3 GHz - 3. Read More

Aim: This paper presents the development of Co-Planar Waveguide (CPW) fed dualband, compact, and flexible antenna. The antenna is designed on flexible substrate jeans; so, it is suitable for wearable applications. Objectives: The proposed antenna generates dual-band at 3.36GHz-3.61GHz and at 5.01 GHz-5.18 GHz. The antenna has a compact size of 40x30 mm2. The antenna consists of a rectangular patch having a slot which i Read More

Background and Objective: Today’s wireless systems i.e. 4G systems are facing major issues of spectral inefficiency, and unreliability for high speed applications. To address these issues, 5G systems have chosen LDPC codes and replaced earlier used Turbo Codes for the purpose of Channel encoding. This paper proposes a design method for Irregular QC- LDPC codes with better spectral efficiency and reliability that too at hig Read More

Background: Wireless Sensor Networks are widely used in different applications like environmental monitoring, health monitoring, wildlife monitoring, etc. The monitored area may be of any shape, such as circular, rectangular, and square. Finding an ideal node deployment technique in Wireless Sensor Systems Networks (WSNs) that would diminish cost, be powerful to node failure, shorten calculation, and communicat Read More

Background & Objective: Partially grounded frequency reconfigurable antenna is discussed in this paper. Antenna frequency cover is 4.2 GHz to 7 GHz and it has reconfigurable notchband near 5 GHz frequency. Frequency rejection is achieved by using circular split-ring slots in radiating element. The antenna can be reconfigured at 5.1 GHz, 5.4 GHz and 5.9 GHz by creating more slots in outer most split-ring. Designed ant Read More

Aim: In this paper, a novel estimator is presented, for online time delay estimation, in single input-single output LTI systems, with time variant and uncertain delay in control input. Background: The main studies made on systems with time-varying delay are divided into three general categories: (1) Identification and estimation of the delay. (2) Criteria presented for stability and robust stability. (3) Control methods presented with g Read More

Background & Objective: The channel coding improves the performance of the mobile network link by adding redundant bits in the message in order to detect and correct the errors occurred during transmission of the data. The traditional method involved in channel coding for GSM has a number of operations, its computation time and complexity were very high which increases the latency in communication. To reduce the Read More

Background and Objective: The functionalities of Wireless Sensor Networks (WSN) are growing in various areas, so to handle the energy consumption of the network in an efficient manner is a challenging task. The sensor nodes in the WSN are equipped with limited battery power, therefore there is a need to utilize the sensor power in an efficient way. The clustering of nodes in the network is one of the ways to han Read More

Background & Objective: The demand of Wireless sensor networks have elevated exceedingly by virtue of broad capability of the sensor networks to relate the physical environment. Sensor devices depend on battery capability and are deployed in adverse environments and it becomes extremely difficult to replace. Thus, elaborating the energy of sensor nodes becomes vital. Methods: G-LEACH is proposed by introducin Read More

Background and Objective: This communication introduces a multiple secondary user (SU) cognitive radio (CR) system in a dynamic fading environment, specifically Nakagami-m fading. The transmission parameters of the CR system are optimized to turn it into an optimal design. Methods: For this purpose, a new hybrid of differential evolution, biogeography-based optimization with simulated annealing, namely DE/ Read More

Background: Traffic congestion is one of the most severe problems especially in metro cities due to ever increasing number of vehicles on roads by 20% per year even with well-planned road management system and sufficient infra. Objectives: Most of the existing traffic signal controllers use fixed cycle type, giving a constant green/red/yellow phase for each traffic signal cycle. These traditional controllers cannot adapt the dy Read More

Background: The paper reports on typical characteristics of resonant electromagnetic modes propagation through interfaces of a multilayer device. Methods: Using the transfer matrix method, p-reflectance is analyzed in angular interrogation for a symmetrical cavity performed with left-handed metamaterial layer mediated with GaAs. Result: An advantage of SPR sensor is demonstrated in terms of optimal performances Read More

Background: The 5G will lead to a great transformation in the mobile telecommunications sector. Objective: The huge challenges being faced by wireless communications such as the increased number of users have given a chance for 5G systems to be developed and considered as an alternative solution. The 5G technology will provide a higher data rate, reduced latency, more efficient power than the previous generati Read More

Background: A novel type of control strategy is presented for the control of chaotic systems, particularly a chaotic robot in joint and workspace, which is the result of applying fractional calculus to dynamic sliding mode control. Objectives: To guarantee the sliding mode condition, a control law is introduced based on the Lyapunov stability theory. Methods: A control scheme is proposed for reducing the chattering problem in finit Read More