Abstract: In the recent times virtual Multiple Input Multiple Output (VMIMO) has been conceptualized to achieve energy efficiency in the field of wireless communications. It gained the attention of many researchers as data gathering and fusion has become one of the most prominent issues in Wireless Sensor Networks (WSNs). The MIMO network is defined considering a group of sensor nodes participating in transmitting and receiving data packets over a WSN. Although configuring a WSN with multiple transmitters and receivers consumes very less amount of power during long term data transmission but it increases the sensor node in built circuitry power thus the energy optimization models are required to be considered. Due to the circuitry complexity and difficulty of integrating separate antenna, virtual MIMO concepts are applied in wireless sensor networks (WSNs) for energy efficient communication to save energy and increase reliability in case of channel and signal fading. This paper introduces energy efficient VMIMO based routing and topology construction model which has been further integrated into centralized and distributed topology construction for WSNs. The proposed method also implements an energy efficient routing using static and dynamic access points. The performance evaluation of the proposed model shows the effectiveness with respect to various existing operational parameters.
Keywords: Energy Efficiency, Virtual MIMO, Static Access Point, Mobile Access Point, Wireless Sensor Networks