IMPACT : International Journal of Research in Engineering & Technology

1-6

Authors: ZEESHAN AHMAD ABBASI

For Design And performance evolution of wireless digital communication system the most important part is the simulation of wireless channel as whole performance of the system is depend upon the channel. In this paper the performance of three wireless channels, AWGN, Rayleigh and Rician have been evaluated. These three channels are most widely used in Single Input Single Output (SISO) and Multiple Input Multiple Output (MIMO) communication system. The performance is evaluated on the basis of Bit Error Rate (BER) versus signal to noise ratio (SNR) . The stimulation results shown the performance of different channel models based on BER at different SNR. The Rayleigh channel model is the most suitable model for urban areas as it is the model which simulates a channel with no Line of Sight (LOS) path and is the most difficult environment

13-20

Authors: N. MURALIMOHAN, V. PREMKUMAR, L. PARVATHI, B. SUDARSHAN & N. MARIMUTHU

Water is one of the primary sources for the existence of life on the earth. But we are neglecting the importance of quality in water and thereby polluting it for ages. To preserve the quality of water and to enable the aquatic life we must treat the waste water before letting them into the resources. Out of natural and artificial resources for the treatment of polluted river water, we can use the natural resources these by preserving the economic resources of the country. Cauvery is one of the major rivers in South India and is being polluted abnormally due to dyeing industries, paper industries, discharge of drainages etc., Thus, Artificial Floating Island Technique can be effectively used to reduce the organic and inorganic pollutants in river water and also to enhance the growth of aquatic ecosystem