GAYATRI LONDHE

In 5G mobile communication networks, millimeter-wave (mmWave) technology plays a key role. To deal with the problem of path loss that happens in the mmWave band, competent beamforming employing a large antenna array is required. Fully digital beamforming approaches currently require separate radio frequency chains (RF chains) for each antenna, which adds to the computational complexity and hardware expense. In a multi-user environment, fully digital beamforming suffers from a larger antenna array layout, whereas analog beamforming solutions are prone to numerous performance concerns. Hybrid beamforming, on the other hand, offers a promising solution for multi-user mmWave communication. This work proposes a two-dimensional overlapping partially connected (2D-OPC) sub-array structure to reduce the antenna structure's hardware complexity and cost. The suggested technique comprises several sub-arrays that are overlapped in 2D space in the form of a Uniform Planar Array (UPA). The su...

The continuously increasing population in India demands for the rapid improvement in food production technology. Indian, economy is mainly based on agriculture. Water is the main resource for agriculture. Hence efficient water management of fresh water resources has a crucial importance. To save the water and to increase the yield of crop proper method of irrigation must be used. It is well known that irrigation by drip is very economical and efficient. The conventional drip irrigation system is fully controlled and monitored by the farmer. This paper presents a fully automated drip irrigation system which is controlled and monitored by using ARM9 processor. Sensors are used to monitor the moisture content of the soil and depending on that the valves of the system are turned ON or OFF automatically for different interval of time. pH of the soil is also important factor to be considered as it affects the nutrient availability in the soil. Sensor to detect the pH of the soil is used a...