Performance Evaluation & Application of Smart Antenna in Sensor Networks
This paper provides a method for forming a communications link of Wireless Sensor Networks (WSN) by enabling each WSN to act as a smart antenna. Each WSN is simulated as a set of randomly placed sensor nodes within a planar area. The proposed method involves a searching WSN, a receiving WSN and a link budget for establishing the link. The searching WSN has the task of transmitting a search beam in order to find adjacent WSNs. The authors also demonstrate that for a given required gain level they can spatially thin the array without significant loss of gain or the effects of grating lobes. The receiving WSN uses a spread spectrum based Space Division Multiple Access (SDMA) receiver.