Performance Improvement of Wireless Sensor Networks Using Layered Space Time Codes

Multiple-input and multiple-output (MIMO) is one of the key component in wireless standards. Wireless standards exploit MIMO to enhance user experience by improving the data rate and reliability of the link. Multiple-input and multiple-output (MIMO) systems formed by multiple transmit and receive antennas can improve performance and increase capacity of wireless sensor networks. In this Paper, the performance of different detection algorithms for V-BLAST, the zero forcing algorithm (ZF), minimum mean square error (MMSE) algorithm and the Maximum a-Posteriori (MAP) algorithm have been simulated and their performances have been compared. under the assumption that the receiver has perfect knowledge about the channel state information (CSI). Convolutional code can be combined with the V-BLAST algorithm to improve its performance.