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This paper explains the performance of voice over LTE system using different voice codec. LTE is the third generation partnership program 3GPP communication system which is wireless in nature and is also the first IP based system. VoLTE (Voice over LTE) is expected to be deployed in the near future for providing voice services. It's ability to reach high throughput is promising in both downlink and...
This paper presents a working model for Gesture controlled user interface which is then extended to being used in a wheelchair. A wheelchair is made to operate on the basis of signals that are generated using the hand gestures. A 3-axis accelerometer is used to detect the change in the direction of the hand gesture. The use of XBee technology helps the wheelchair to be operated in a very large range...
This paper gives the prototype of a microstrip antenna with an inset feed, at two different frequencies of 2.2 GHz and 5.2 GHz. The bandwidth of these antennas has been enhanced, by introducing slots in it; and has been made suitable for WLAN applications. On successful simulation of the antennas, the values of directivity and gain were observed. Gain and Directivity for the antennas operating at...
This paper presents a technique to get multi band in a microstrip patch antenna. It involves introducing four parasitic patches one by one in the antenna. At first, an antenna using inset feed (with dimensions in mm, x: 4.89, y: 37.495, z: 3.2) is designed for a frequency of 5.4 GHz. It is followed by introducing one, two, three and four parasitic patches one by one; their individual gain and bandwidth...
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