Time filter

Source Type

Ranjitham G.,Sri Ramakrishna Engineering College | Kumar K.R.S.,Ranganathan Engineering College
Journal of Theoretical and Applied Information Technology | Year: 2014

This Paper analyses the performance of Multiple Input Multiple Output (MIMO) wireless communication system by combining it with an efficient algorithm Diagonal Reduction (DR). DR is a powerful tool to achieve more efficiently a high performance with less complexity when applied to MIMO detection. This paper proposes a DR algorithm in order to reduce its complexity named Greedy Diagonal Reduction (GDR) algorithm which gives reduced complexity with efficient performance at the receiver using the MATLAB communication tool box version 7.1 as a simulation tool. From the simulation results of various reduction algorithms it is observed that,DR can reduce the number of iterations using size reduction operations. Proposed DR algorithm gives identical Bit Error Rate (BER) performance with LLL algorithms when applied to Successive Interference cancellation (SIC) decoding. Greedy DR reduces the computational complexity in Multiple Input Multiple Output systems by improving the efficiency in terms of size reduction operations. © 2005 - 2014 JATIT & LLS. All rights reserved. Source

Sengottaian N.,Salem College | Murugesan R.,Ranganathan Engineering College | Velumani A.,Avinashilingam University For Women
International Journal of Applied Engineering Research | Year: 2015

Improper collection and disposal of solid waste that is a heterogeneous mixture of different materials like plastic, paper, metal, glass, earth, stone, soil, kitchen waste, market waste etc. In urban cities like Coimbatore is endanger health of millions of citizens. Agency that manages infrastructural issues Coimbatore Municipal Corporation can overcome issues related to solid waste by identifying landfill gas potential and emission at landfill site. In Our study we propose practical solution to this problem by biochemical process. The proposed system of the waste management needs and integrated approach with active participation from peoples as well as the local solid waste management department and Municipal Corporation. The value of gas potential provides information that total MSW disposed in the land fill is decomposed but only 60 -70% of MSW disposed so proper solid waste management needed for Coimbatore reason. © Research India Publications. Source

Vairavel G.,Coimbatore Institute of Technology | Shankar Kumar K.R.,Ranganathan Engineering College
Journal of Theoretical and Applied Information Technology | Year: 2014

This paper investigates the Weighted Linear Parallel Interference Cancellation (WLPIC) Multiuser Detection (MUD) scheme with Vertical-Bell Laboratories Layered Space-Time (V-BLAST) signal detection algorithms in uplink Code Division Multiple Access based Multiple Input Single Output (MISO-CDMA) system. The Bit error rate performance of WLPIC scheme with V-BLAST signal detection and Conventional Linear Parallel Interference Cancellation (CLPIC) scheme with V-BLAST signal detection are compared in both correlated and uncorrelated Rayleigh fading channels. The simulation results show that the uplink MISO-CDMA system performs well with WLPIC MUD scheme and MMSE-SIC signal detection when compared with CLPIC MUD scheme and ZF-SIC signal detection in different channel conditions. © 2005 - 2014 JATIT & LLS. All rights reserved. Source

Sathish Kumar B.,Sri Ramakrishna Engineering College | Shankar Kumar K.R.,Ranganathan Engineering College
Journal of Theoretical and Applied Information Technology | Year: 2014

MIMO is combined with OFDM to develop the performance of wireless transmission systems. Multiple antennas are used together at the transmitting and receiving ends. The performance of an OFDM system is calculated, taking into consideration multipath delay spread, channel noise, Rayleigh fading channel and distortion. In this paper, bits are generated and then mapped with modulation schemes like QPSK, PSK and QAM. After that, the mapped data is separated through blocks of 120 modulated data whereas a training sequence of the data is inserted both at the beginning and ending parts of the block. The equalization is used to find out the variation to the rest of data. For a Multiple-Input and Multiple-Output (MIMO) Orthogonal Frequency-Division Multiplexing (OFDM) system with universal space-time codes and least-squared decoders, this study provides an improved eigenmodes transmission based on to the equivalent channel matrix. Through novel eigenmodes, data symbols encoded by space-time codes can be steered to these eigenmodes analogous to MIMO wireless communication systems with single-carrier transmission. Furthermore, the relations between different code-rate space-time codes, system capacity and number of eigenmodes are measured by numerical simulation. For this, water filling scheme and Adaptive Genetic Algorithm (AGA) is proposed here for bit allocation and determining the optimal transmits powers for orthogonal eigenmodes. Also, for power adaptation two approaches are proposed, primarily the conventional water-filling algorithm and in second technique adaptive Genetic Algorithm is used to choose the optimum power vector. Simulation result shows that the proposed approach provides better results when compared with other existing approaches. © 2005-2014 JATIT & LLS. All rights reserved. Source

Senthil Kumar M.,Ranganathan Engineering College | Sivakumar P.,Ranganathan Educational Institutions REC Kalvi Nagar
International Journal of Applied Engineering Research | Year: 2014

The primary purpose of accreditation is to ensure quality control and qualityassurance, commonly with reference to a certification system in the areas ofeducation, training and testing, whereas the purpose of internal qualityassurance is to develop a quality culture within an institution, and toimplement a strategy for the continuous enhancement of quality. Althoughseveral quality assurance standards and guidelines have been established andimplemented worldwide through various international, regional and nationalagencies; relevant literature searches show that there is no common agreementor criterion that can be used in the quality assurance of engineering education.The main objective of this article is to improve the overall quality ofEducation Accreditation system using Current Communication System (CCS).Changes in the curriculum do support fundamental economic and socialtransformation in the society. Such transformations require new kinds ofskills, capabilities and attitudes, which can be developed by integrating CCSin education. © Research India Publications. Source

Discover hidden collaborations