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We develop an interference-aware relaying scheme in hybrid wireless networks. The scheme is derived from the optimization model which generalizes the multi-hop package delivery problem in hybrid wireless networks. It aims at minimizing the network costs via optimal power loading and relaying route. Besides, the new cost model considering interference impact is an advance on the basis of our previous...
The society is becoming more and more dependent on Long Term Evolution (LTE-services) in a large variety of applications, which is why we must ensure it is secure and available when we need it. Like any wireless technology, it is vulnerable to radiated electromagnetic interference. In this paper, we show how the levels of standard radiated emission limits will affect the performance of LTE. The results...
In this paper, the joint route and channel selection problem with reliability guarantee in cognitive radio network (CRN) is addressed. Since the interference to licensed spectrum owners needs to be strictly controlled, cognitive radio enabled users (CUs) should vacate the using channel immediately on detecting licensed users and the end to end performance may be seriously degraded. Furthermore, the...
Various power control techniques have been proposed to boost aggregate network throughput by reducing the interference impact and encouraging more concurrent transmissions in medium-shared wireless systems. In this paper, we do not intend to devise new power control mechanisms. Rather, we investigate an interesting problem of how to apply power control techniques in a multichannel networking environment,...
Multiple Bluetooth piconets are likely to co-exist in a physical environment, supporting many wireless applications. An independently operating Bluetooth piconet will inevitably encounter mutual interference from collocated piconets, which results in individual piconet and overall scatternet performance degradation. In this paper, the throughput performance of Bluetooth piconet is studied and evaluated...
In this paper, we consider the problem of transmission delay in terms of finite coding length derived from the random coding bound for different cooperative protocols. Specifically, we first study the impact of cooperative transmission on the routing decision for wireless ad-hoc networks, where a routing optimization problem is formulated to minimize the end-to-end delay that ensures a satisfactory...
Improper spectrum allocation of PCS 1900 band (IS- 95) and IMT2000 band (WCDMA) in the same geographical area may cause severe interference between those two technologies. As a result inefficiency of spectrum usage is unavoidable, drop calls, and or outage probability of the interference victim (IS-95 Mobile Station) may reach an intolerable level. Therefore, a minimum guard band and or a Minimum...
As an important secure routing mechanism, multi-path routing is one of the major ways to improve network efficiency and to guarantee the network security, which ensures the reliability of data transmission by using backup paths when the primary one is unavailable due to local node or link failures. Most current studies on multi-path routing mechanism are based on experiments or simulations. The results...
The impact of interference on the throughput of a multihop path in a wireless network is studied in this paper. Interference is caused due to packets of the same end-to-end flow (intra-path), as well as packets of different flows (inter-path), as packets are transmitted over multiple hops in the network. We show how much throughput is lost due to such interference, and how much is lost due to other...
The paper presents the results of a survey based on the large amount of collected data and performed calculations, started since 1996, and aimed to evaluate the 50 Hz electromagnetic interference impact from the Italian high speed railway line on extended metallic structures like telecommunication cables and pipelines
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