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In this work we investigate the effects of multiple access interference (MAI) and polarization mode dispersion (PMD) in optical code division multiplexing (OCDM) lightpaths. These paths are determined by the data encoding with non-coherent optical orthogonal codes (OOC), using a sequence inversion keying (SIK) optical correlator system. Our results show the impact of MAI effects and PMD constraint...
Video-streaming can now be offered on third-generation (3G) mobile networks. Most research efforts have focused on video download. This paper presents a detailed study of challenges faced for successfully deploying applications requiring life video upload. Both subjective and objective qualities as well as the effects of mobility are analyzed on real 3G networks. Consequently, video profiles are identified...
An experimental half-inch tape Hi-Vision VCR was developed. This paper reports on its signal processing system. We begin by explaining the intrafield fixed-length DCT algorithm, which compresses Hi-Vision data at 594 Mbps to 125 Mbps. Next we describe the error-correction system, 1,7 codes, and PR (1,1) and 3-level 4-state Viterbi decoding. The experimental system has two heads for each of two channels,...
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