MIMO, Performance Measurement of OSTBC and Alamouti Space Time Block Codes

Recent advances in wireless communication systems have increased the throughput over wireless channels and networks. At the same time, the reliability of wireless communication has been increased. As a result, customers use wireless systems more often.

In wireless communication, error free transmission can be achieved by deploying multiple antennas whether at transmitter or receiver side.4^th generation of wireless can be achieved by using MIMO in combination with OFDM. MIMO multiplexing (spatial multiplexing) and diversity (space time coding) having OFDM modulation scheme are the main areas of focus in our study. MIMO multiplexing increases a network capacity by splitting a high signal rate into multiple lower rate streams. MIMO allows higher throughput, diversity gain and interference reduction.

Data will be encoded using STBC. Advantage of using STBC is that no feedback is being required to get the channel information .Receiver complexity is also being reduced. Simplest of those is Alamouti STBC. After that, Comparison will be made among different space time block codes in order to find out the best one.

Authors

Sidra Ghayour

Maham Rashid

Saleha Maqsood

Home automation system through GPRS as an android application

By using home automation through GPRS you can control your entire home appliance from anywhere. We want to make this system as an android application, so that you can control your smart home by using your smart android phone. Our system is GPRS based that’s why you can monitor your home from wherever you are on the road, on the holiday or at the office. Android is the Linux based operating system. The software we are using for the development of application is Eclipse SDK plug in java environment. This home automation system consist of GPRS module, Microcontroller and relays as hardware while it software consists of android environment and microcontroller burner.

Authors

Malja Aslam

Zainab Bahar

Anum Fatima