Modeling Network Coded TCP: Analysis of Throughput and Energy Cost
The authors analyze the performance of TCP and TCP with Network Coding (TCP/NC) in lossy networks. They build upon the framework introduced by Padhye et al. and characterize the throughput behavior of classical TCP and TCP/NC as a function of erasure probability, round-trip time, maximum window size, and duration of the connection. Their analytical results show that network coding masks random erasures from TCP, thus preventing TCP's performance degradation in lossy networks. It is further seen that TCP/NC has significant throughput gains over TCP. In addition, they show that TCP/NC may lead to cost reduction for wireless network providers while maintaining a certain quality of service to their users.