Results 71 to 80 of about 1,180,225 (167)
, 2007 The network performance of a frequency division duplex and time division duplex (TDD) code division multiple access (CDMA)-based system is investigated using system parameters similar to those of the Universal Mobile Telecommunication System.
Blogh, J.S., Ni, S., Hanzo, L.
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Nanophotonics, Volume 15, Issue 17, 11 September 2026.We demonstrate a VO2‐based transmissive reconfigurable intelligent surface for indoor millimeter‐wave communication. The TRIS replaces conventional PIN and varactor diodes with geometrically tailored VO2 switches, enabling transmitted phase control through phase‐transition‐based switching.
Junghyeon Kim +3 more
wiley +1 more source
Genetic Algorithm Assisted Error Probability Optimisation for Beamforming
, 2004 A novel Genetic Algorithm (GA) assisted direct error probability optimisation technique is proposed for adaptive beamforming, which reduces the achievable error probability by nearly two orders of magnitude at a signal-to-noise ratio of 10dB in the ...
Wolfgang, A. +3 more
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Iterative robust adaptive beamforming
EURASIP Journal on Advances in Signal Processing, 2017 The minimum power distortionless response beamformer has a good interference rejection capability, but the desired signal will be suppressed if signal steering vector or data covariance matrix is not precise. The worst-case performance optimization-based
Yang Li, Hong Ma, Li Cheng
doaj +1 more source
Adaptive Phase Rolling for Opportunistic Beamforming in OFDMA Systems with a Small Number of Users
The Scientific World Journal, 2014 The performance of opportunistic beamforming might be degraded if the number of users is small. This paper proposes an adaptive opportunistic beamforming technique for orthogonal frequency division multiple access systems, which can produce good results ...
Minjoong Rim
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Performance analysis for a class of robust adaptive beamformers [PDF]
, 2004 Robust adaptive beamforming is a key issue in array applications where there exist uncertainties about the steering vector of interest. Diagonal loading is one of the most popular techniques to improve robustness.
O. Besson +3 more
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, 2010 The downlink minimum bit error rate (MBER) transmit beamforming is directly designed based on the uplink MBER receive beamforming solution for time division duplex (TDD) space-division multiple-access (SDMA) induced multiple-input multiple-output (MIMO ...
Yang, Lie-Liang, Chen, Sheng
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The Journal of Engineering, 2019 Here, the authors propose a novel robust adaptive beamforming method, which is robust to both of the covariance matrix mismatch and the steering vector estimation mismatch.
Lei Yu +3 more
doaj +1 more source
A Comparison of Adaptive Beamforming Implementations for Wideband Scenarios
, 2005 In this paper, we compare low cost implementations of wideband adaptive beamformers utilising the generalised sidelobe canceller (GSC) in combination with the least-mean squares algorithms.
Weiss, S +5 more
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Sparsity-Based Non-Stationary Clutter Suppression Technique for Airborne Radar
IEEE Access, 2018 Conventional space-time adaptive processing (STAP) technique can achieve perfect performance when applied to side-looking airborne radar (SLAR), where the clutter is relatively stationary, whereas it suffers significant degradation for non-SLAR due to ...
Keqing Duan +4 more
doaj +1 more source