Dismantling and Re-Assembling Type Cages for Open Water Aquaculture

The Galvanized iron (GI) cage frames have been designed and fabricated by CMFRI as a cost-effective alternative for high density polyethylene (HDPE) cage frames. By this the cost has been reduced to one third or even less with high durability and life span with regular maintenance. Dismantling and reassembling type cages have been proved successful in open water aquaculture at Cochin

UNDERGROUND WIRELESS COMMUNICATION CHANNEL MODELING AND SIMULATION USING 0.3GMSK MODULATION CONSIDERING PENETRATION AND SCATTERING LOSS

Wireless communication inside mines and tunnels is very different from that in terrestrial environment because of the strong attenuation of signals. Here, we are developing an empirical model for the underground wireless communication channel based on experimental data which help in predicting the average received signal strength at a given distance from transmitter. The model aims at adding correction factors to the available outdoor and indoor propagation models such as Okumara-hata model, cost231 model, ITU indoor propagation models etc. Modeling is done by choosing the most appropriate model among the available ones and performing regression methods to the model based on experimental data. Correction factors are then added based on two parameters which we are considering namely- Penetration and Scattering loss for 0.3GMSK