Syed Ikram Shah

In the present world, the spectrum efficiency along with the capacity and coverage of wireless networks are being improved by wireless specialists. Wireless link performance could be enhanced and improved by using multiple antenna technology called Space time wireless technology. There exists some advancement in the present MIMO techniques which could further improve the overall wireless Local Area Network (LANs) and Wide Area Network (WANs). In Multipath fading performance gain is very important which could be achieved by using an efficient Space-Time Coding (STC) technique. This Space Time coding along with Alamouti Scheme is a very vibrant research topic. In the forthcoming generation of mobile communication there will be a need of high data rate, reliable communication link and vast multimedia capabilities, STBC is the one solution for these. This paper presents the Space-Time Block Codes (STBC) for wireless networks using Alamouti Scheme in which multiple antennas are being used at both transmitter and receiver. The simulations have been done in MATLAB.

This paper presents design and implementation of a low-cost system solution. A light-weight wireless device is used for surveillance of suspicious activities at highly sensitive areas. The devices such as transceivers operating at 2.4 GHz are deployed in indoor settings. Finer-grained Channel State Information in conjunction with pair of leaky wave cable detects any intruder in the area. The intrusion detection is identified at a particular subcarrier frequency. The processing of the measured data over time is analyzed and used for reporting the disturbances. Deploying leaky wave cable as transmitter and receiver has benefits in terms of wider coverage area, covering blind and semi blind zones. The system fully exploits the amplitude and phase information of Channel State Information provided by Intel 5300 NIC and its associated driver. The experimental results demonstrate greater level of accuracy in a cluttered …