Keywords: Multihop cellular networks Single-hop cellular networks Ad hoc networks Technology and economics a b s t r a c t Recently, multihop cellular networks (MCNs) were proposed to preserve the advantages of traditional single-hop cellular networks with multihop ad hoc relaying networks, while minimizing the drawbacks that they involved. In this way,… (More)
—In this paper, we propose a multihop dynamic chan-enhance the performance is also investigated. Simulation results show that MDCA significantly improves the system capacity. Furthermore, the MDCA can efficiently alleviate the call blocking in hot-spot cells.
— The inspiration behind the wireless world came from the need to provide users with mobility and to offer an alternative to the limitations of wired mediums. As a result, there are various wireless mobile technologies like GSM, GPRS, WLAN, and Bluetooth available. The user interface and the size of mobile devices are one of the main concerns in the design… (More)
Whereas cellular systems have traditionally adopted single-hop transmissions between the mobile station (MS) and the base station (BS), researchers expect multihop transmission to be utilised in the future. Cellular systems present several challenges, such as channel assignment, which are exacerbated by multimedia service traffic and an increasing number of… (More)
To investigate the physiological mechanism underlying chilling stress mitigation by exogenous caffeic acid (CA), we pretreated Cucumis sativus cv. Jinchun no. 4 seedlings with CA for 2 days, followed by exposure to normal (25/18 °C) or cold (15/8 °C) temperatures for 1 day. We chose 25 μM as the optimum CA concentration, since it produced lower levels of… (More)
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