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.
Cloud radio access network (Cloud-RAN) has great potentials to improve energy efficiency and increase capacity of wireless networks. In this paper, we study the green communication for Cloud-RANs. Instead of only focusing on the transmit power consumption, we minimize the network power consumption which includes not only transmit power consumption but also circuit power consumption. In addition, we...
In the area of full duplex (FD)-enabled small cell networks, limited works have been done on consideration of cache and mobile edge communication (MEC). In this paper, a virtual FD-enabled small cell network with cache and MEC is investigated for two heterogeneous services, high-data-rate service and computation-sensitive service. In our proposed scheme, content caching and FD communication are closely...
With the continuous increase of mobile Internet traffic, the user-centric ultra-dense network (UUDN) is proposed as one of the promising solutions to provide very high area throughput density and flexible access service for users. The limited radio resources cause serious competition among numerous APs. Thus, Non-orthogonal multiple access (NOMA), which supports multiple signals transmission on the...
With the explosive growth of smart devices and mobile data traffic, limited fronthaul capacity has become a notable bottleneck of green communication access networks, such as cloud radio access networks(C-RANs). In this paper, we proposed a joint user association and downlink beamforming scheme for green C-RANs to minimize the network power consumption with the limited fronthaul links. We first formulate...
This paper jointly studies interference management (IM) and self-organization (SO) schemes in a hybrid-SO small-cell network, which is a combination of the centralized and distributed small-cell networks. From the view of downlink transmission, we formulate a resource optimization-based IM (ROIM) problem. In particular, to accommodate to the hybrid architecture, the problem is divided into two subproblems...
Orthogonal frequency division multiplexing (OFDM) brings severe co-channel interference for cell-edge users (CEUs). To deal with this problem, traffic-pairing scheme based on particle swarm optimization (TP-PSO) is proposed as an efficient scheme in downlink Coordinated Multi-Point multi-user multi-input multi-output (CoMP-MU-MIMO) transmission/reception. This paper jointly considers CEUs' signal...
Resource allocation problem in high-speed railway wireless communication networks is one of the key issues to improve the efficiency of resource utilization. However, traditional resource allocation methods cannot be directly applied to this special communication system. In this paper, we propose a resource allocation approach for high-speed railway downlink orthogonal frequency-division multiplexing...
In this paper, we proposed the addition of 2 new bits in Downlink Control Information (DCI) format 2D used for Transmission Mode 10 in 3GPP LTE-A specification. This New Downlink Control Information Design with two new bits extends the Downlink Demodulation Reference Signal (DMRS) so that the Physical Downlink Shared Channel (PDSCH) shall be processed and mapped to Resource Elements (RE) mapping and...
This paper represents recent research on Long Term Evolution-Advanced (LTE-A) technology which is a mobile communication system supported by Multiple-Input Multiple-Output (MIMO) antenna transmission based on Downlink transmission, whereby User Equipments (UEs) are scheduled for packet transmission via information such as channel quality indicator reports, rank indication and precoding matrices. The...
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.