The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
With the goal of the interference decreasing at subcarrier level, the allocation of frequencies is considered in this paper. This allocation can be seen like a permutation of frequencies. This paper propose a new analyzing tool for the frequencies permutation used in WiMAX mobile communications: the interleaving distances spectrum (IDS). This tool can offers an efficiency measure for these permutations...
Radio spectrum and network infrastructure are two essential resources for mobile service delivery, which are both costly and increasingly scarce. In this paper we consider drivers and barriers of network sharing, which is seen as a potential solution for scarcity in these resources. We considered a full sharing scenario for a Mobile Network Operator using the Business Model Canvas method, and concluded...
There are more and more studies in focus on mobile ad hoc networks (MANETs). Because of the advantage of it can be constructed only by mobile hosts which work like routers. Even if no infrastructure, communication still can be proceeded. It is applicable in the urgent rescue, military battlefield and other situations that must temporarily construct the network. In MANET, mobile hosts (MHs) will store...
IEEE 802.16j multi-hop relay task standard includes two mutually exclusive options: transparent relay stations (T-RS) and non-transparent relay stations (NT-RS). In this work, a system design approach is proposed to compare different relay systems in term of their capacity with rate fairness constraint among the mobile stations (MS). Single-input single-output (SISO) and multi-input multi-output (MIMO)...
This paper explores the attributes, layering models and objective functions in cross layer designs for mobile ad hoc wireless networks by taking all the statistical characteristics and constraints from the physical (PHY) layer, media access control (MAC) layer and network (NET) layer into consideration. This paper reviews the entire network optimization across all the PHY/MAC/NET layers. At the PHY...
In this paper, we propose a cognitive radio-based multi-user resource allocation framework for mobile ad hoc networks using multi-carrier DS CDMA modulation over a frequency-selective fading channel. In particular, given pre-existing communications in the spectrum where the system is operating, in addition to potential narrow-band interference, a channel sensing and estimation mechanism is provided...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.