Results 61 to 70 of about 20,804 (217)
Antenna Impedance Estimation at MIMO Receivers
CoRR, 2022 This paper considers antenna impedance estimation based on training sequences at MIMO receivers. The goal is to firstly leverage extensive resources available in most wireless systems for channel estimation to estimate antenna impedance in real-time. We assume the receiver switches its impedance in a predetermined fashion during each training sequence.
Shaohan Wu, Brian L. Hughes
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Evaluating the effect of antenna tilt and rotation on antenna performance in an indoor environment [PDF]
, 2011 In this paper the relative performances of antenna elements are assessed by combining the measured full (3D) far-field radiation patterns of each with measured angle of arrival data for a laboratory/office space.
Nix, AR +9 more
core +1 more source
Capacity of MIMO Channels With Antenna Selection [PDF]
IEEE Transactions on Information Theory, 2007 This correspondence studies the capacity of multiple-input-multiple-output (MIMO) channels in the presence of antenna selection. Antenna selection reduces the complexity of the radio devices and requires only a small amount of channel state feedback. For high signal-to-noise ratio (SNR), we define excess rate as the constant term in the expansion of ...
Shahab Sanayei, Aria Nosratinia
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, 2007 The advent of new services and applications in mobile and wireless communications, most of them based on high data rates, is helping to reactivate the Telecommunication market.
García García, Laura
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Spatial modulation for generalized MIMO: challenges, opportunities and implementation [PDF]
, 2013 A key challenge of future mobile communication research is to strike an attractive compromise between wireless network's area spectral efficiency and energy efficiency.
Renzo, Marco Di +13 more
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Electronics LettersWith the accelerated deployment of 5G massive multi‐input multi‐output (MIMO)‐structured base stations (BSs), accurate and efficient testing of massive MIMO arrays is essential to ensure that the 5G massive MIMO antenna array can perform as expected. The
Xudong An +4 more
doaj +1 more source
Field-Theoretical Investigations of the Influence of Mutual Coupling Effects on the Capacity of MIMO Wireless Links [PDF]
Advances in Radio Science, 2005 We present a MIMO channel model which takes into account mutual coupling effects at the receiver and transmitter array in order to assess the influence of mutual coupling effects on the capacity of MIMO channels.
H. Ndoumbè Mbonjo Mbonjo +2 more
doaj
Antenna Selection for MIMO Systems with Closely Spaced Antennas
EURASIP Journal on Wireless Communications and Networking, 2009 Physical size limitations in user equipment may force multiple antennas to be spaced closely, and this generates a considerable amount of mutual coupling between antenna elements whose effect cannot be neglected. Thus, the design and deployment of antenna selection schemes appropriate for next generation wireless standards such as 3GPP long term ...
Yang Yang, Rick S. Blum, Sana Sfar
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Capacity evaluation of LoS-optimised and standard MIMO antenna arrays at 5.2 GHz [PDF]
, 2007 In this paper, the channel capacity of MIMO communication systems is evaluated from measurements in a home environment at 5.2 GHz. The capacity performance of a novel line-of-sight (LoS)-optimised antenna array architecture is investigated and compared ...
Sarris, I +3 more
core +1 more source
, 2014 We propose a simple yet effective norm-based joint transmit and receive antenna selection (NBJTRAS) assisted and two-tier channel estimation (TTCE) aided space-time shift keying (STSK) system, which is capable of significantly outperforming the ...
Li, Li +9 more
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