Results 1 to 10 of about 41,796 (217)
Performance evaluation of channel estimation techniques for a mobile fourth generation wide area OFDM system [PDF]
, 2002 In this paper channel estimation techniques for a mobile fourth generation coherent orthogonal frequency division multiplexing (OFDM) system are proposed. Coherent detection dictates that a per-subband estimate of the frequency response of the channel is
Nix, AR +5 more
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Optimal training sequences for channel estimation in cyclic-prefix-based single-carrier systems with transmit diversity [PDF]
, 2004 In this paper, we investigate a new class of training sequences that are optimal for least squares (LS) channel estimation in systems employing transmit diversity and single-carrier (SC) modulation with a cyclic prefix (CP) extension.
Coon, J, McGeehan, JP, Beach, MA
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Uplink Channel Estimation in WiMAX [PDF]
2009 IEEE Wireless Communications and Networking Conference, 2009 WiMAX is an emerging and powerful technology in broadband wireless communications in that it can simultaneously provide high-speed broadband services over large distances. However, signal distortion due to channel fading, noise, and Doppler can limit the overall transmission data rate and coverage.
Kenneth Ho, Andres Kwasinski
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, 2005 The number of transmit antennas that can be employed in the context of least-squares (LS) channel estimation contrived for orthogonal frequency division multiplexing (OFDM) systems employing multiple transmit antennas is limited by the ratio of the ...
M. Munster +3 more
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Joint Decision-Directed Channel and Noise-Variance Estimation for MIMO OFDM/SDMA Systems Based on Expectation-Conditional Maximization [PDF]
, 2011 A joint channel impulse response (CIR) and noise-variance estimation scheme is proposed for multiuser multiple-input–multiple-output (MIMO) orthogonal frequency-division multiplexing/space-division multiple access (OFDM/SDMA) systems, which is based on ...
Xiaomin Mu +5 more
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Detection of Channel Variations to Improve Channel Estimation Methods [PDF]
Circuits, Systems, and Signal Processing, 2014 [Abstract] In current digital communication systems, channel information is typically acquired by supervised approaches that use pilot symbols included in the transmit frames. Given that pilot symbols do not convey user data, they penalize throughput spectral efficiency, and transmit energy consumption of the system.
Adriana Dapena +3 more
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, 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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Parametric Channel Estimation for Massive MIMO [PDF]
2018 IEEE Statistical Signal Processing Workshop (SSP), 2018 Channel state information is crucial to achieving the capacity of multi-antenna (MIMO) wireless communication systems. It requires estimating the channel matrix. This estimation task is studied, considering a sparse channel model particularly suited to millimeter wave propagation, as well as a general measurement model taking into account hybrid ...
Luc Le Magoarou, Stéphane Paquelet
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On remote estimation with multiple communication channels [PDF]
2016 American Control Conference (ACC), 2016 This paper considers a sequential sensor scheduling and remote estimation problem with multiple communication channels. Departing from the classical remote estimation paradigm, which involves one communication channel (noiseless or noisy), we consider here the more realistic setting of two channels with different characteristics (one is cheap but noisy,
Xiaobin Gao, Emrah Akyol, Tamer Basar
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Channel Estimation in OFDM Systems with Strong Interference
, 2010 In this paper, we investigate channel estimation algorithms in an OFDM system which is exposed to pulsed interference. It will be examined how the interference affects the performance of the channel estimation and how the channel estimation can be ...
Epple, Ulrich, Schnell, Michael
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