EEBCDA Co-MIMO scheme for wireless sensor networks

Abstract

This thesis work is focused on the Cooperative multiple input multiple output (CO-MIMO). In radio, multiple-input and multiple-output, or MIMO , is a method for multiplying the capacity of a radio link using multiple transmit and receive antennas to exploit multipath propagation. At one time, in wireless the term "MIMO" referred to the use of multiple antennas at the transmitter and the receiver. In modern usage, "MIMO" specifically refers to a practical technique for sending and receiving more than one data signal simultaneously over the same radio channel by exploiting multipath propagation. MIMO is fundamentally different from smart antenna techniques developed to enhance the performance of a single data signal, such as beamforming and diversity. MIMO is often traced back to 1970s research papers concerning multi-channel digital transmission systems and interference (crosstalk) between wire pairs in a cable bundle: AR Kaye and DA George (1970), Branderburg and Wyner (1974), and W. van Etten (1975, 1976). Although these are not examples of exploiting multipath propagation to send multiple information streams, some of the mathematical techniques for dealing with mutual interference proved useful to MIMO development. EEBCDA is one of the efficient cluster based to wireless sensor networks (WSN) protocols. It solves unbalanced energy consumption of cluster based networks by clustering based on energy consumption of the clusters. This results in more balanced energy consumption among the clusters. In this thesis we combine EEBCDA with cooperative MIMO to make EEBCDA more energy efficient on longer distances. In EEBCDA MIMO scheme, the residual energy of each node is considered in choosing CHs for clustering and in case of cooperative nodes selection. Simulation results demonstrate that this results less energy consumption and in turn better overall life time of nodes EEBCDA SISO.