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For telecom operators, assessing the IP network performance has played an important role in improving the network planning and optimization. Because there are many metrics that can be used in the assessment of the network performance, few multi-metric quality of service (QoS) evaluation methods have been found to compare the QoS in different networks. In order to evaluate and measure the performance...
Cognitive radios are expected to improve the capacity of wireless mesh network dramatically. In this paper, we model the channel heterogeneity, which is a unique feature in cognitive radios, and present a cross-layer design framework which jointly considers the spectrum sharing, scheduling and routing with the objective of minimizing the system total activation time, i.e., maximizing the system capacity...
Although OFDMA is a candidate physical layer protocol for 802.16, there are few solutions for the wireless resource-allocating problem in OFDMA mesh network. In this paper, we study the current resource allocation methods in OFDM and OFDMA network, and introduce the architecture of OFDMA mesh network. We build a mathematic system model for the OFDMA mesh network, and propose a sophisticated ACO-based...
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