Results 261 to 270 of about 23,082 (299)

Antenna Selection in Large-Scale Multiple Antenna Systems

2015
Keeping a balance between performance and complexity is a well-known dilemma in large-scale multiple antenna systems. In this paper, the system complexity and the outage probability are evaluated for a large-scale multiple-input-single-output (MISO) system.
Zhongyuan Zhao 0001, Mugen Peng, Li Wang 0039, Wenqi Cai, Yong Li 0001, Hsiao-Hwa Chen   +5 more
openaire   +1 more source

Capacity degradation of representative antenna selection algorithms and an antenna selection scheme

4th IET International Conference on Wireless, Mobile & Multimedia Networks (ICWMMN 2011), 2011
In this paper, we concentrated on investigating the performance of some representative antenna selection algorithms, and attributed the channel capacity degradation of these algorithms to two aspects: The idealized assumption or under utilization of the channel matrix for computational convenient purpose and, the local searching strategy that existing ...
null Wang Jun-ling, null Gao Mei-guo, null Fu Tuo, null Xu Cheng-fa   +3 more
openaire   +1 more source

Antenna selection in the full-duplex multi-antenna relay channel

2013 IEEE International Conference on Communications (ICC), 2013
We consider the problem of antenna selection (AS) in full duplex amplify-and-forward relaying. We assume a basic relay system where the source, the relay and the destination, all equipped with multiple antennas. For this full-duplex relay system, we investigate different AS schemes to select a single transmit antenna at both the source and the relay ...
Suraweera, H. A., Krikidis, Ioannis A., Yuen, C., Suraweera, H. A., Krikidis, Ioannis A., Yuen, C.   +5 more
openaire   +2 more sources

Antenna selection schemes for energy efficiency in distributed antenna systems

2012 IEEE International Conference on Communications (ICC), 2012
In this paper two schemes of distributed antenna selection, Pathloss-based Antenna Selection (P-AS) and Energy-efficient Antenna Selection (E-AS), are studied for the purpose of improving energy efficiency in Distributed Antenna Systems (DAS). Path loss information is exploited in P-AS, whilst the energy consumption of antenna nodes is taken into ...
Hong Li, Georgios P. Koudouridis, Jiayin Zhang   +2 more
openaire   +1 more source

Waveform-Selective Devices for Antenna Applications

2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science, 2020
In this contribution, we investigate several examples of antenna applications of waveform-selective devices, i.e., structures exhibiting different responses depending on the waveform of the incoming waves. In particular, as a first example, we describe an open-ended waveguide capped with an iris band-pass filter loaded with a lumped-element circuit ...
Vellucci S., Barbuto M., Monti A., Toscano A., Bilotti F.   +4 more
openaire   +1 more source

Antenna Placement for Downlink Distributed Antenna Systems with Selection Transmission

2011 IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011
In this paper we propose new algorithms to determine the antenna location for downlink distributed antenna systems (DAS) with selection transmission (ST). ST has some advantages for DAS since the feedback overhead is quite small and other-cell interference can be reduced compared to other transmission schemes.
Eunsung Park, Inkyu Lee
openaire   +1 more source

Heuristic Antenna Selection Algorithm for Multiuser Multi-Antenna Downlink

VTC Spring 2009 - IEEE 69th Vehicular Technology Conference, 2009
In this paper, antenna selection algorithm for multiuser downlink systems where each terminal is equipped with multiple antennas is proposed. As opposed to point to point systems, the broadcast nature of the transmission complicates the selection process as the selection criteria must take into consideration performances of all users collectively ...
Ernest Kurniawan, A. S. Madhukumar, Francois P. S. Chin   +2 more
openaire   +1 more source

Transmit antenna selection for multiple antenna systems with stall avoidance

Computers & Electrical Engineering, 2017
Overall performance of MIMO is improved by cross layer transmit antenna selection.Stalling of packets occurs in the receiver buffer when N-SAW is implemented.Implementing timer based stall avoidance mechanism results in packets being dropped.Larger packets increase latency while reducing the throughput and dropped packets.Increasing the number of SAW ...
Elizabeth M. Okumu, Mqhele E. Dlodlo
openaire   +1 more source

Antenna selection for MIMO-OFDM systems

Signal Processing, 2008
In this paper, a new subcarrier-by-subcarrier antenna selection scheme for a multiple input multiple output (MIMO) space-frequency block coded (SFBC) orthogonal frequency division multiplexing (OFDM) system concatenated with a turbo product code is presented.
openaire   +1 more source

Receive antenna selection for closely-spaced antennas with mutual coupling

IEEE Transactions on Wireless Communications, 2010
We investigate the achievable rate of receive antenna selection MIMO systems in the presence of mutual coupling and spatial correlation. For that, we assume the antenna array to consist of dipole antennas placed side-by-side in a linear pattern and in a very limited physical space.
Zhemin Xu, Sana Sfar, Rick S. Blum
openaire   +1 more source