The use of biometric recognition is increasing nowadays because the characteristics of biometrics are unique and immutable. Traditional identification methods like tokens and access cards are less reliable than the biometric ...

During symbol transmission we may use single carrier or multi-carrier modulation. In case of single carrier transmission all users share the same transmission medium and this causes the problem of Inter Symbol Interference ...

The demand for CDMA –WLL, Wireless Local Loop, Communication system is higher than wired network. The CDMA–WLL system in Addis Ababa is providing voice and data communication services. Because of its fast and reliable ...

In a wireless network, users can relay information to exploit cooperative diversity, thereby increasing reliability. The uses of multiple transmit and receive antennas (MIMO) can help to exploit transmit and receive ...

In recent years, the devices in communication systems require the development of low cost, minimal weight, compact and low profile antennas that are capable of maintaining high performance over a wide spectrum of frequencies. ...

The number of smartphone users is increasing with increase in demand for high data rate. To fulfill this growing data rate demand, Long Term Evolution (LTE) is one technology option that is being widely deployed nowadays. ...

The demand of code division multiple access (CDMA) cellular communication has grown remarkably in the past few years. Due to this reason mobile communication networks should use the limited resources of the system in ...

Now a day’s wireless communication is one of the most active areas of technology development. It enables customers to use communication services like telephony or internet services at anytime and anywhere. A multitude ...

The wireless channel places fundamental limitation on the performance of wireless communication network. Fading, path loss and shadowing are some of the impairments caused by the wireless channel, which result in significant ...

Distribution system is a largest portion of network of electrical power system. Different actions have been taken to improve the efficiency of the distribution network. One of the most basic and the commonest way to ...