Distributed CS-CDMA Cooperative Wireless Sensor Networks

In this paper, cooperation in CS-CDMA wireless sensor networks (WSN) is considered in order to improve the quality of the estimates of the sensor messages used by the fusion center to generate the final decision. In the proposed cooperative wireless sensor networks each node forwards its own decisions and relays the message of a neighbor sensor deploying the detectand- forward cooperation. Simulations have shown that with cooperative distributed detection and exploitation of spatial diversity, better detection error performance is achieved and the number of sensor can be reduced. The performance gain is however more significant in flat fading environment, since in multipath environment the non-cooperative CS-CDMA WSN already exploits efficiently the multipath diversity.