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.
Satellites have largely been designed as application-specific and isolated for the past decades. Though with certain benefits, it might lead to resource under utilization and limited satellite applications. As an emerging networking technology, software-defined networking has recently been introduced into satellite networks. In this letter, we propose a software-defined satellite networking (SDSN)...
In the next generation (5G) wireless networks, device-to-device (D2D) communication is an important technology to improve frequency efficiency and provide proximity service. In this paper, we focus on a scenario where spare frequency resources in a cellular network are exploited by D2D users to provide local service. Considering the fact that the channel quality experienced by an end user varies from...
In this paper we propose an optimal resource management scheme for device-to-device (D2D) communications utilising uplink resources in a Single Carrier Frequency Division Multiple Access (SC-FDMA) system, which is the uplink access scheme in the 3GPP-Long Term Evolution (LTE) standard. We consider an arbitrary number of conventional cellular (CC) User Equipments (UEs) and D2D UEs, both utilising the...
This paper proposes an iterative decoding algorithm for network coding HARQ (NC-HARQ) retransmission scheme in LDPC system. Including two erroneous codewords and one retransmitted network coded word, a larger Tanner graph is applied in the decoding algorithm. We modify the process of iterative decoding and separate the external information into two parts which come from channel coding and network...
In cellular networks, balancing the throughput among users is important to achieve a uniform Quality-of-Service (QoS). This can be accomplished using a variety of cross-layer techniques. In this paper, the authors investigate how the down-tilt of basestation (BS) antennas can be adjusted to maximize the user throughput fairness in a heterogeneous network, considering the impact of both a dynamic user...
Scheduling schemes of wireless networks determine packet transmission opportunities for each network node by considering network parameters such as link quality, transmission rate, and delay. However, security has not been taken into account in these schemes, although it plays a critical role in network performance. In this paper a new scheduling scheme is proposed to determine packet transmissions...
The emerging Wireless Mesh Networks (WMN) is a broadband access technology with the properties of multi-hop and self-organization, which has advantages of easy deployment, self-recovering, low cost and high scalability. The paper firstly introduces related works of wireless mesh networks; then describes the deployment of a real indoor testbed SJTU-MESH architecture and click based implementation including...
Wireless Mesh Network (WMN) is a promising broadband wireless network architecture. Security is an important component of the WMN architecture but is not fully considered so far. In this paper, we introduce a prototype secure wireless mesh network testbed called SJTU-MESH built by Shanghai Jiao Tong University. The detailed design and implementation of secure WMN nodes are presented, and the construction...
Much work has been done to modify the TCP protocol to improve TCP performance - mainly throughput, over wireless link. However, such improvements need to change the TCP implementation on user systems, which is usually difficult to deploy. In this paper, we investigate the effectiveness of enhancing the TCP performance over wireless link by tuning the packet scheduling schemes. Based on an opportunistic...
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.