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In this paper, we present an available-bandwidth-based proactive routing protocol for IEEE 802.15.4-based single-sink and multi-sink ad-hoc networks. The available-bandwidth-based proactive routing protocol maintains the best forwarding path in terms of the end-to-end available bandwidth towards each sink node present in a network. Moreover, a node can maintain more than one data forwarding path towards...
Opportunistic routing (OR) is a promising concept to improve throughput and reliability by utilizing the broadcast nature of the wireless medium. Previous studies focus on OR with single channel scenario; however, multi-channel is widely used over wireless communication systems. Due to the overhearing and dynamic forwarding aspects, OR obtains worse throughput gain for additional channels. This paper...
We characterize the asymptotic behavior of the throughput capacity and packet delay in cognitive radio (CR) networks. For the model where the network density grows, we derive the scaling laws for secondary users (SUs) who opportunistically access the spectrum when primary users (PUs) are idle. More specifically, we assume that SUs do not know PU (transmitter or receiver) locations a priori, and access...
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