Parcourir par sujet "Beamforming"
Voici les éléments 1-13 de 13
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Cross-Layer Antenna Beamforming and Power Control in Wireless Uplinks
(2009)We consider backlog-driven power control and antenna beamforming as a means to maximize network throughput in a wireless uplink, where a base station receives with an antenna array from single-antenna wireless users. ... -
Dynamic radio resource and interference management for MIMO-OFDMA mobile broadband wireless access systems
(2013)A multi-user multi-cell Multiple-Input Multiple Output/Orthogonal Frequency Division Multiple Access (MIMO/OFDMA) system for next generation Broadband Wireless Access (BWA) networks is studied, in which the Base Station ... -
Fast power-up active link protection in autonomous distributed transmitter power control
(2008)In this work, we propose an enhancement to the DPC/ALP (Distributed Power Control with Active Link Protection) algorithm that allows fast power ramp-up without compromising the ALP guarantee. The original DPC algorithm was ... -
Joint beamforming and channel selection for multicast IEEE 802.11n WLANs
(2008)Multicast transmission over WLANs is becoming a popular application. IEEE 802.11n technology is developed due to the ever increasing demand for higher data rate and Quality of Service (QoS). However, there is an unmanaged ... -
Joint beamforming and power control for CDMA uplink throughput maximization
(2007)We consider joint beamforming and power control as a means to maximize throughput in a CDMA wireless uplink, where a base station equipped with multiple antennas receives from single - antenna wireless users. Throughput ... -
Joint multicast beamforming and admission control
(2007)Wireless multicasting is quickly emerging as an important enabling technology for mass content distribution to mobile hand-held devices. With channel state information at the transmitter, it is possible to tailor transmissions ... -
Joint multiuser downlink beamforming and admission control: A semidefinite relaxation approach
(2007)Multiuser downlink beamforming under quality of service (QoS) constraints has attracted considerable interest in recent years, because it is particularly appealing from a network operator's perspective (e.g., UMTS, 802.16e). ... -
Joint QoS multicast power / admission control and base station assignment: A geometric programming approach
(2008)The joint power control and base station (BS) assignment problem is considered under Quality-of-Service (QoS) constraints. If a feasible solution exists, the problem can be efficiently solved using existing distributed ... -
Low-complexity beamforming techniques for IEEE 802.11n WLANs
(2009)The impetus of the present study is to describe a downlink beamforming method that increase spectrum efficiency and significantly reduces implementation complexity and power consumption compare to beamforming technique at ... -
On multicast beamforming and admission control for UMTS-LTE
(2008)Transmit beamforming for physical layer multicasting is emerging as an appealing transmission modality for next-generation cellular wireless systems, notably UMTS-LTE. Optimal design of the transmit beamformer(s) from a ... -
On the use of distributed directive antenna arrays in mobile OFDMA networks
(2011)Distributed Omni Antenna Systems (OASs) have been proposed to increase the capacity of Broadband Wireless Access (BWA) systems. We investigate the extension of such systems by employing distributed Directive Antenna Arrays ... -
Room-localized spoken command recognition in multi-room, multi-microphone environments
(2017)The paper focuses on the design of a practical system pipeline for always-listening, far-field spoken command recognition in everyday smart indoor environments that consist of multiple rooms equipped with sparsely distributed ... -
A second-order cone deflation approach to joint multiuser downlink beamforming and admission control
(2007)Multiuser downlink beamforming under quality of service (QoS) constraints has attracted considerable interest in recent years, because it is particularly appealing from a network operator's perspective (e.g., UMTS, 802.16e). ...