Delay Optimization and Cross-Layer Design in Multihop Wireless Networks With Network Coding and Successive Interference Cancelation - 2015
Network coding (NC) and multipacket reception with successive interference cancellation (SIC) have been shown to boost the performance of multihop wireless networks (MWNs). However, previous work stressed maximization of network throughput while not considering quality of service (QoS) necessities, which could result in high packet delays in the network. The objective of this work is minimization of packet delay in a TDMA-based mostly MWN that is jointly utilizing NC and SIC techniques for a given traffic demand matrix. We have a tendency to assume conflict-free scheduling and allow multipath routing. We have a tendency to formulate a cross-layer optimization that assigns time slots to links in a very means that the typical packet delay is minimized. The downside formulation results in a troublesome mixed integer nonlinear programming (MINLP) that the state-of-art software will only solve for very tiny-sized networks. For massive networks, we tend to develop a heuristic approach that iteratively determines the optimal solution. We tend to gift numerical results, that show that the common packet delay and traffic handling capacity of a network, using w/o NC+SIC, NC, SIC and NC+SIC schemes, improves from left to right. The traffic capacity of NC+SIC is double of the w/o NC+SIC. Thus, combined utilization of NC and SIC techniques leads to significant performance improvement.
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