of “Secure Data Compression and Error Correcting Codes for Networks and Cloud Storage” by James Alan Kelley, Ph.D., Brown University, May 2015. We present several novel constructions—combining cryptography, error correcting codes (ECCs), and data compression—that find ready application in enhancing security and fault-tolerance in cloud storage. We demonstrate this by presenting a simple (yet no...

Luby Transform (LT) codes are more important in communication applications due to the characteristics of fast encoding/decoding process, and low complexity. However, LT codes are optimal only when the number of input symbols is close to infinity. Some researches modified the degree distribution of LT codes to make LT codes suitable for short symbol length. In this article, we propose an optimal...

To achieve an efficient and reliable data transmission in time-varying conditions, a novel non-orthogonal multiple access (NOMA) scheme based on rateless codes (NOMA-RC) is proposed the multicast system this paper. Using at packet level, can generate enough encoded packets according to users’ requirements cope with adverse environments. The performance of NOMA-RC delay constraints analyzed over...

Private keyword search is a technique that allows for searching and retrieving documents matching certain keywords without revealing the search criteria. We improve the space efficiency of the Ostrovsky et al. Private Search [9] scheme, by describing methods that require considerably shorter buffers for returning the results of the search. Our basic decoding scheme recursive extraction, require...

Wireless digital broadcasting applications such as digital audio broadcast (DAB) and digital video broadcast (DVB) are becoming increasingly popular since the digital format allows for quality improvements as compared to traditional analogue broadcast. The broadcasting is commonly based on packet transmission. In this thesis, we consider broadcasting over packet erasure channels. To achieve rel...