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In reliable multicast, feedback and recovery traffic limit the performance and scalability of the network. In this paper, we present an improvement to the many-to-many reliable multicast protocol, group-aided multicast protocol (GAM), with a local-group based recovery by making use of forward-error correction (FEC) for local recovery. In contrast to original GAM, which only makes use of NACK-based...
Prabhu (1976) examined the sensitivity of uncoded PSK modulations to carrier phase jitter. A Gaussian phase jitter model was assumed. The same study is conducted for trellis coded PSK and QAM modulations. Rotationally invariant codes are considered and an explicit design procedure is included. Through digital computer simulation it was found that for practical values of RMS phase jitter coding gains...
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