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.
Hybrid precoding provides a compromise between the system performance and the implementation complexity in millimeter wave (mmWave) systems, while cloud radio access network (C-RAN) is a green network composed of central baseband unit (BBU), distributed low-cost remote radio heads (RRHs) and low-latency fronthaul links connecting BBU and RRHs. This paper jointly optimizes the user scheduling and hybrid...
A novel resource allocation approach is proposed to decrease the control signaling for retransmission when semi-persistent scheduling is used in LTE uplink system. The basic principle of this method is that resource allocation for initial transmissions is done from two opposite direction of the whole bandwidth between one HARQ RTT. Non-adaptive HARQ is used as much as possible. If non-adaptive HARQ...
Performance comparison of control-less scheduling policies for VoIP in LTE UL is conducted in this work. In LTE system, the main challenges of effectively supporting VoIP service are the control channel restriction from the large number of simultaneous users and the frequent arrival of small packets. Semi-persistent scheduling and group scheduling are the main methods to solve above problem and achieve...
This paper presents an effective scheduling scheme called semi-persistent scheduling for VoIP service in LTE system. The main challenges of effectively supporting VoIP service in LTE system are 1) the tight delay requirement combined with the frequent arrival of small packets of VoIP traffic and 2) the scarcity of radio resources along with control channel restriction in LTE system. Simulation results...
In this paper, a novel resource allocation algorithm (CPFAH) for future wideband mobile communication systems is proposed. The basic idea is to schedule mobile stations according to their respective retransmission times. Thus the retransmission delay can be reduced and user fairness can be maintained. The algorithm takes the advantage of conventional performance-enhancing methods, e.g. frequency hopping,...
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.