Study On Energy Efficiency In DS-CDMA Wireless Sensor Network

As the development of sensor technique, network technique, Micro ElectroMechanism System and wireless communication technique, one new wirelessnetwork-WSN(wireless sensor network)is invented in the world, correspondingly. Itsaim at perceiving, collecting and dealing with the messages of the perception targetsin the network-covered field, and sending them to the observers. By using andexpanding the existing wireless sensor network, We can directly perceive the realworld, and increase human being's ability to a new reach. WSN is a new field inresearch of wireless communication techniques. It has an bright prospect ofapplication, and attracts extensive attention. But we still also have many problems tosolve, this article has carried on the analysis on the energy valid problem.This paper focus mainly on the issue of the energy-efficiency of WSN. WSN hasnumerous nodes, and a large scale. One of the important standards to testify thefunction of WSN is energy-efficiency. The author analyzes the present relatedresearch at home and at abroad, and do research in energy-efficiency of the nodes in anew-building systematic model: Orthogonal synchronous DS-CDMA WSN.This article first analyses the wireless sensor network, and introduced thewireless sensor network structure, questions and challenges, design goal andperformance measure and application, then detailed introduction about energyefficiency study encode technology. It proposed one method to establish the systemmodel based on the clustering of DS-CDMA wireless sensor network. This kind ofwireless sensor network is in the clustering of wireless sensor network establishmentorthogonal SSSA of the DS-CDMA wireless communications system, cluster head isbase station, nodes regard user. All nodes transmit the data synchronously to thecluster head use orthogonal spread spectrum sequence modulation, cluster headcarries on to accept the receive data. This kind of SSSA DS-CDMA wireless sensornetwork has low BER, the common-user channel, characteristics and so on multipleaccess receiver, cause the node energy consumption to be more effective. The simulation results show that node energy consumption of DS-CDMA can decreaseobviously energy consumption of cluster heads averages out energy consumption ofcluster head and nodes, so energy-efficiency of network can be improved evidently,and the duration of network can be prolonged...