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For vast WSN, where the topology introduces propagation delay and fast drift rate of clock over sampling periods, synchronizing the WSN nodes and maintaining the synchronization is difficult. To maintain an accurate synchronization across the WSN, the authors propose a cooperative synchronization method, which uses Constant Amplitude Zero Auto Correlation (CAZAC) sequences for OFDM symbols. The proposed method is part of a class of distributed methods known as Gossip or Consensus. These protocols are robust and self-correcting to topology changes and link failure. In this paper, the authors introduce a specific type of power-law topology called scale-free and compare the synchronization performance of the proposed method in random and scale-free topologies.<\/p>","DOI":"10.4018\/jitn.2012010104","type":"journal-article","created":{"date-parts":[[2012,4,5]],"date-time":"2012-04-05T13:15:13Z","timestamp":1333631713000},"page":"56-71","source":"Crossref","is-referenced-by-count":4,"title":["Distributed Cooperative Synchronization for Large-Scale 4G Wireless Sensor Networks Using CAZAC Sequences"],"prefix":"10.4018","volume":"4","author":[{"given":"Mahdy","family":"Saedy","sequence":"first","affiliation":[{"name":"University of Texas at San Antonio, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brian","family":"Kelley","sequence":"additional","affiliation":[{"name":"University of Texas at San Antonio, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2432","reference":[{"key":"jitn.2012010104-0","doi-asserted-by":"crossref","unstructured":"Apicharttrisorn, K., Choochaisri, S., & Intanagonwiwat, C. 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