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Toward reduced-complexity digital implementation, frequency domain Volterra-based nonlinear equalization (VNLE) structures for multistep fiber nonlinearity compensation are proposed. In the cascade structures, nonlinear equalization is performed before (cascade-1) or after (cascade-2) the dispersion compensation in each step. Superior performance with the shorter discrete Fourier transform (DFT) lengths...
We propose an application-layer forward error correction (AL-FEC) code rate allocation scheme to maximize the quality of experience (QoE) of a video multicast. The allocation dynamically assigns multicast clients to the quality layers of a scalable video bitstream, based on their heterogeneous channel qualities and video playback capabilities. Normalized mean opinion score (NMOS) is employed to value...
Using symmetric electronic dispersion compensation, root-raised-cosine pulse shaping, and DFT block length optimization, the complexity of single-step frequency domain Volterra-based fiber nonlinearity compensation is reduced by a factor of 2.4, for a 3600 km 128 Gbit/s DP 16-QAM link.
A novel best-effort utility maximization scheme for video multicast with heterogeneous clients is proposed. Clients are assumed to have heterogeneous media playback requirements and channels with different capacities. The multicast employs H.264/SVC coded video which permits combined temporal, spatial, and amplitude scalability. The perceptual effects of the scalable video on clients with different...
In this paper, we investigate the outage probability in decoding the rateless codes when a certain amount fountain encoded symbols are generated, and then transmitted through a memoryless erasure channel (MEC). We obtain a closed-form formula for the outage probability by accounting for the complete effect of the channel on the distribution of the received symbols. Moreover, a new model with high...
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