PERFORMANCE ANALYSIS OF MULTICARRIER MODULATION SCHEMES IN 5G CELLULAR SYSTEMS

PERFORMANCE ANALYSIS OF MULTI CARRIER MODULATION SCHEMES IN 5G CELLULAR SYSTEMS

Naveena A Priyadharsini 1, S. Tamil Selvi 2

1 Assistant Professor, Department of ECE, ACWE, Kanyakumari, Tamilnadu, India.   

2 Professor & Head-PG, Department of ECE, NEC, Kovilpatti, Tamilnadu, India.        

In the existing 4G technology, Orthogonal Frequency Division Multiplexing (OFDM) plays a vital role. As the demand for data traffic in cellular networks increase day by day, the capacity of the system should be increased. The resources available today are inefficient to meet the future needs. So the current techniques must be upgraded. In this paper we concentrate on the requirements of Fifth generation (5G) cellular networks and also the design of its physical layer in downlink. For this purpose a multicarrier methodology Generalized Frequency Division Multiplexing (GFDM) is considered. Here the performance of both the OFDM and GFDM system is compared and analyzed using higher order modulation schemes and linear iterative receiver structure. The simulation results clearly explained that the GFDM system has less symbol error rate (SER) than the OFDM system, which increases the transmission rate.

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MEMS BASED THERMAL MICROACTUATOR

MEMS BASED THERMAL MICROACTUATOR

Dr. M.Saravanan1, G.V.Sunil Kumar2

1,2Department of Electronics and Instrumentation Engineering, SreeVidyanikethan Engineering College, A.Rangampet, Tirupati,India.

Source of energy for the MEMS devices became the unavoidable requirement for any application. Even though many renewable energy sources are available, the optimal utilization of those resources are not attained till now. This paper presents a design and implementation of Passive MEMS based voltage generation using temperature. The design is made with two stages, in the first part the temperature is converted to displacement using Micro actuators and then in the second stage the displacement is converted to pressure and then to voltage using piezoelectric sensors. It is simulated using COMSOL multiphysics software at a temperature of 100o C.

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PERFORMANCE ANALYSIS OF RESOURCE ALLOCATION SCHEMES IN LTE OFDMA SYSTEMS

PERFORMANCE ANALYSIS OF RESOURCE ALLOCATION SCHEMES IN 

LTE OFDMA SYSTEMS  

Kavitha.P 1, Dr.Shanmugavel.S 2

1 PG Student, 2 Professor 

1,2 Department of ECE, National Engineering College (Autonomous), Kovilpatti, Tamilnadu, India.   

This paper deals with the network spectral efficiency/capacity analysis of downlink Long Term Evolution (LTE) Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) system with Nc cells in a network. In a multi-cell cellular communication, the inter-cell interference (ICI) is detrimental in achieving the intended system performance, in particular for the edge user.  To reduce the ICI, Fractional Frequency Reuse (FFR) method is compared in suburban Macro environment. Assuming that each transmitter (i.e) evolved Node B (eNB) is equipped with t antennas and each receiver (i.e) User Equipment (UE)  with r antennas for each subcarrier and each receiver implements single-user detection, in the absence of channel state information at the transmitter (CSIT), the  network spectral efficiency is limited due to equal power into antennas. Further, capacity improvement is possible with stronger CSI assumption. This is achieved through interference suppression by transmit beam forming approach. An expression for spectral efficiency is derived in the absence and presence of perfect CSIT. The simulation shows an improvement with perfect CSIT when the number of transmitting antennas gets increased.

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HIERARCHICAL OVERLAY SYSTEMS: AN ADAPTIVE DETECTION APPROACH

HIERARCHICAL OVERLAY SYSTEMS: AN ADAPTIVE DETECTION APPROACH

R. Sowmiya1 S. Lenty Stuwart 2 S. Tamilselvi 3

1, 2 University College of Engineering Nagercoil, Anna University, Tamilnadu, India.

3 National Engineering College (Autonomous), Kovilpatti, Tamilnadu, India.

In this paper, we introduce a new adaptive loading technique for multiuser code division multiple access (CDMA) system to achieve improved performance in terms of lower bit-error rate (BER) for active micro-cell users present in the coverage area of a macro-cell base station (BS) which provides basic coverage for a large area. Based on the fading scenario, the proposed scheme adjusts the load distribution among the macro-cell BS and the participating micro-cell BSs in the overlay structure to guarantee relatively low BER to the active mobile stations (MS). The scheme also enables the MS to establish link with one base station at a time to avoid the power disparity from the participating BSs. The superiority of the proposed system in multipath Rayleigh fading channel is shown and also the effect of equal-gain combining (EGC) scheme in system performance is analysed for different BS load.

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DIAGNOSIS OF RETINAL DISEASE USING ADAPTIVE NEURO FUZZY INFERENCE SYSTEM

DIAGNOSIS OF RETINAL DISEASE USING ADAPTIVE NEURO FUZZY INFERENCE SYSTEM

C.Vinodhini1, R.Manjula Devi2

1 PG Student, 2 Assistant Professor [SG]

1,2Department of ECE,National Engineering College (Autonomous), Kovilpatti, Tamilnadu, India.

Image processing is a method in order to perform some operations on an image, mainly to get enhanced image. Image segmentation is the process of partitioning a digital image into multiple segments. Retinal images can be viewed using SLO fundus camera which provide detailed views of the different layers inside a human cornea. Some retinal problems and diseases can occur in one or more of the main corneal layers such as the epithelium and endothelium. In this paper, a unique approach to automatically extract the true retinal area from image based on image processing and machine learning approaches is performed.ANN is a parallel distributed information processor made of simple processing units. ANN is not effective to obtain the abnormal image of retina and it provides multilevel performance. Therefore misclassification rate occurs in the system. In order to reduce the error work, feature extraction was performed using texture and then the classification was done. The results obtained with accuracy of 93%.ANFIS provide output linearly. Finally the performance analysis is compared between ANN and ANFIS.

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FACTS BASED OPTIMAL CONTROL OF WIND ENERGY SYSTEMS FOR VILLAGE RENEWABLE ENERGY SOURCES

FACTS BASED OPTIMAL CONTROL OF WIND ENERGY SYSTEMS FOR VILLAGE RENEWABLE ENERGY SOURCES

Hemanand.T

Asst.Prof, Department of EEE, Jeppiaar Maamallan Engineering College, Tamilnadu, India.

In recent years, the main goal of the Renewable energy resources is to provide low cost renewable energy products for the global market especially to suit village budgets. Many R&D companies have tried to provide a cost effective renewable energy product, but the quality of the products are below par. If the companies provide high quality energy resources means, it is not cost effective to suit village budgets. This paper provides a novel approach which compares and provides a Flexible Alternative Current Transmission system – [FACTS] based on Wind Turbine. The performance criterion of the product has two terms, one involving the maximum power capture and the other corresponding to mechanical fatigue load minimization at a low budget.  The comparison Model provides among others, the RST controller based Solution, PI controller based solution and LQG controllers based solution with low cost. 

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ACCIDENT PREVENTION IN GAS STATION USING GSM BASED MICROCONTROLLER

ACCIDENT PREVENTION IN GAS STATION USING GSM BASED MICROCONTROLLER

Rajesh.R1, Revannth.M2, Sivagurunathan.L3, Saravanasastha.M4, Kottaiamalai.R5

1234 UG student- Dpet of ECE – Sree sowdambika College of  Engineering, Aruppukottai, Tamilnadu, India.5 Assistant Professor - Sree sowdambika College of Engineering, Aruppukottai, Tamilnadu, India.

Security and automation is a main concern in our day-to-day life. This style to home and industrial automation and security system design is almost standardized now a days. we have bothered to increase these standards by combining new design techniques and advanced a low cost home and industrial automated alert system. Everyone wants to be as much as safe as possible. The design of simple hardware circuit allows user to use in this system with PIR sensor, Gas sensor, Smoke sensor. The system is fully controlled by the ARDUINO microcontroller. All the sensors and detector are interconnected to microcontroller by using various types of interface circuits. The microcontroller will continuously monitor all the sensors and if it senses any gas leaking problem then the microcontroller will send the SMS and call to the user mobile through GSM modem.

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