PROPOSED 2x2 MIMO TRANSCEIVER SYSTEM USING DOWNLINK STLC AND UPLINK STBC FOR WIRELESS SENSOR NETWORK

Abstract

The Space-Time Line Coding STLC allows the transmitter to send symbols with maximum spatial diversity without needing Channel State Information CSI at the receiver for wireless sensor networks. This coding is similar to Space-Time Block Coding STBC, allowing the receiver to achieve maximum spatial diversity without needing CSI at the transmitter. There have been studies on transceiver architectures for data transmission, such as the Fusion Centre (FC) and sensors in wireless sensor networks WSN. The downlink from the FC to the sensor uses STLC, and the uplink uses STBC. Currently, CSI is only necessary for the FC rather than the sensors. Typically, this architecture uses a model of two antennas for the FC and one antenna for the sensor. This paper applies the 2x2 MIMO model to the FC and the sensor. This improved model will reduce the bit error rate while increasing the channel capacity.