A comparative study of forward error correction and frame accumulation for VoIP over congested networks
作者： Steffen Præstholm , Hans-Peter Schwefel , Søren Vang Andersen
DOI: 10.1007/978-3-540-72990-7_35
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摘要: We compare Forward Error Correction (FEC) and frame ACCumulation (ACC) to see which of the two schemes most effectively reduce loss rate for an aggregate VoIP flows, sharing a network bottleneck. model this bottleneck by M/M/1/K queue we analytically show that given certain assumptions, FEC is best choice low initial load at Then, as increases, crossing point reached after applying ACC better choice. study through numerical examples. Furthermore, present examples indicating than in bandwidth limited scenarios, while performance more equal packet processing with being slightly Finally, introduce general models, e.g. MMPP/M/1/K queue, traffic scenarios like ON/OFF traffic.
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