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.
The next generation mobile network is foreseen as a heterogeneous network comprising not only the evolved existing systems but also the new radio (NR) spanning over the whole spectrum. Multi-connectivity (MC), where a UE aggregates the radio resources from multiple cells, provides an efficient way to fulfill the diverse 5G requirements. In 3GPP, Dual connectivity (DC) and carrier aggregation (CA)...
This paper studies the bidirectional user scheduling and mode selection in single-cell full-duplex (FD) system, where a FD base station (BS) serves multiple uplink and downlink half-duplex (HD) users. Due to the existence of the inter-user interference from an uplink transmitting user to a downlink receiving user, the system operating in FD mode does not necessarily outperform HD mode, depending on...
Recent work has demonstrated the advantage of full-duplex (FD) network over half-duplex (HD) network in bidirectional sum rate under the assumption of full-buffer and symmetric uplink-downlink traffics. In this paper, we consider asymmetric bidirectional traffics, and study the performance gain of FD network over both the traditional time-division duplex (TDD) network with static time slot splitting...
In LTE Release-8, Multi-user MIMO (MU-MIMO) in the uplink direction is supported with improvement of LTE spectrum efficiency. The further enhancement of uplink reference signal in LTE Release-10 guarantees the bandwidth allocation flexibility and orthogonality of uplink MU-MIMO application in LTE networks. In this paper, the practical MU-MIMO scheduling flow is described and several utilized MU-MIMO...
Antenna tilt is an effective inter-cell interference reduction technique which has been studied a lot previously in the CDMA-based systems. In this paper, we concentrate on the evaluations of the mechanical antenna downtilt in the uplink LTE networks. The SINR performance and the trade-off between the cell coverage and capacity are studied in a homogeneous scenario. Simulation results in Macro 1 show,...
The 3GPP UTRAN Long Term Evolution (LTE) system utilizes packet based architecture with distributed mobility management, where the E-UTRANNode-B (eNB) takes the responsibility of making the hard handover/handoff (HO) decisions based on the user equipment (UE) measurements. To cope with the corner effect due to the loss of the line of sight (LOS), a fast HO decision algorithm is required which can...
Outdoor radio propagation experiments are presented at 2.4 GHz, using a handset MIMO antenna with two monopoles and two planar inverted-F antennas (PIFAs), adjacent to a human phantom in browsing stance. The propagation test was performed in an urban area of a city, which resulted in non line-of-sight (NLOS) situations. In our investigation, the 4-by-4 MIMO and SISO channel capacities for the reception...
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.