Traffic Optimization for Multimodal Cooperative Networks
نویسندگان
چکیده
In this paper, we study the traffic optimization problem for a heterogeneous traffic network by considering utility functions of data and voice traffic. We also study the performance of multimodal networks, where other modes of communication like wires, infrared links may operate in addition to wireless nodes to improve the performance of the wireless network. We assume the presence of an additional wired channel between the wireless nodes in an example network. We solve the traffic optimization problem by maximizing the sum of utilities of all voice and data users in the network and calculate the optimal rates that can be allocated to data and voice. We also divide transmit power between the wireless channel and the wired channel for a source-destination pair wireless network and a cooperative diamond relay network, implemented with Laneman protocol separately using constrained optimization techniques and performance is analyzed in terms of outage probability expressions. We show that optimal power allocation to a wired channel between the source and a relay separated by a poor wireless channel improves performance with few assumptions on the characteristics of the wire and over a range of transmit powers.
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