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Joint Multicast Beamforming and Antenna Selection
IEEE Transactions on Signal Processing, 2013Multicast beamforming exploits subscriber channel state information at the base station to steer the transmission power towards the subscribers, while minimizing interference to other users and systems. Such functionality has been provisioned in the long-term evolution (LTE) enhanced multimedia broadcast multicast service (EMBMS).
Omar Mehanna +2 more
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Practical antenna selection for WLAN AP
IEEE INFOCOM 2016 - The 35th Annual IEEE International Conference on Computer Communications, 2016Antenna selection, a cost-effective way to enhance network performance, has been employed in a limited manner in wireless local area networks (WLANs) due to the lack of channel information at the transmitter. In this paper, a practical antenna selection system without using channel information is proposed.
Seungmin Yoo +4 more
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Limiting behavior of receive antennae selection
2011 45th Annual Conference on Information Sciences and Systems, 2011In this paper we investigate the limiting behavior of receive antenna selection in single-input multiple-output (SIMO) wireless systems when the number of receive antennas gets very large. Using results on the convergence of the trimmed mean, we show that mutual information converges in distribution to the logarithm of a folded Gaussian distribution in
Peyman Hesami, J. Nicholas Laneman
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Steerable optical antennas by selective heating
Optics Letters, 2014Directional steerability can be obtained for an array of optical antennas through selective heating of the individual elements. Heating changes electrical conductivity of the heated element, which affects the phase of the generated currents. The variation in temperature can be obtained by modifying the biasing point of the individual elements of the ...
Alexander, Cuadrado +2 more
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Throughput-Based Antenna Selection Measurements
2009 IEEE 70th Vehicular Technology Conference Fall, 2009In this work, we provide a new throughput-based antenna selection criterion that considers the entire system design rather than only the channel state information. The performance evaluation was carried out in a measurement campaign in a common outdoor urban scenario. We present our results in terms of physical layer throughput over transmit power.
José Antonio García-Naya +4 more
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Learning-Based Antenna Selection for Multicasting
2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2018In multi-antenna systems, it is preferred to activate only a subset of the available transmit antennas in order to save hardware and energy resources, without seriously degrading the system performance. However, antenna selection often poses very hard optimization problems.
Mohamed Salah Ibrahim +3 more
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Frequency and Antenna Selection
2009This chapter contains sections titled: Near and far field Loop and other dipole antennas Directional antennas Spinning fields and circular polarization Omnidirectional systems Other antenna considerations Frequency factors Power limitations and ...
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On capacity gain of antenna subset selection for multiple antenna multicasting
Transactions on Emerging Telecommunications Technologies, 2013AbstractIn this letter, we consider the transmit antenna subset selection scheme in multicast channels where the antenna subset is selected to maximise the minimum signal‐to‐noise power ratio among the associated users. Using an asymptotic analysis, the average capacity is derived for the large number of users asymptote under the assumption that the ...
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Relay Beam Selection with Directional Antennas
2011 IEEE Global Telecommunications Conference - GLOBECOM 2011, 2011Relay Stations (RSs) can be deployed in a wireless network to extend its coverage and improve its capacity. Smart (directional) antennas can enhance the functionalities of RSs by forming one or multiple beams only towards intended receivers. In this paper, we focus on the topology control approach for efficient communications in wireless relay networks
Brendan Mumey +3 more
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MIMO capacity with antenna selection and interference
2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)., 2004System capacity is considered for a group of interfering users employing single user detection and antenna selection of multiple transmit and receive antennas for flat Rayleigh fading channels with independent fading coefficients for each path. The case considered is that where there is very limited channel state information (only the selected antennas)
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