Results 71 to 80 of about 70,274 (154)

In situ temperature determination using magnetic resonance spectroscopy thermometry for noninvasive postmortem examinations

open access: yesNMR in Biomedicine, Volume 37, Issue 10, October 2024.
We investigated the feasibility of using MRS thermometry for postmortem examinations in forensics. There was no clear influence of postmortem changes on the MRS temperature measurement in brain tissue, both in severed sheep heads and in 84 deceased. The study thus demonstrates the potential of MRS thermometry for postmortem investigations.
Niklaus Zoelch   +6 more
wiley   +1 more source

Linear MMSE-Optimal Turbo Equalization Using Context Trees [PDF]

open access: yesarXiv, 2012
Formulations of the turbo equalization approach to iterative equalization and decoding vary greatly when channel knowledge is either partially or completely unknown. Maximum aposteriori probability (MAP) and minimum mean square error (MMSE) approaches leverage channel knowledge to make explicit use of soft information (priors over the transmitted data ...
arxiv  

Soft-Decision-Driven Channel Estimation for Pipelined Turbo Receivers [PDF]

open access: yesarXiv, 2011
We consider channel estimation specific to turbo equalization for multiple-input multiple-output (MIMO) wireless communication. We develop a soft-decision-driven sequential algorithm geared to the pipelined turbo equalizer architecture operating on orthogonal frequency division multiplexing (OFDM) symbols. One interesting feature of the pipelined turbo
arxiv  

Measurement-Based Performance Evaluation of Advanced MIMO Transceiver Designs

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
This paper describes the methodology and the results of performance investigations on a multiple-input multiple-output (MIMO) transceiver scheme for frequency-selective radio channels.
Schneider Christian   +2 more
doaj   +1 more source

Soft-In Soft-Out DFE and Bi-directional DFE [PDF]

open access: yesarXiv, 2011
We design a soft-in soft-out (SISO) decision feedback equalizer (DFE) that performs better than its linear counterpart in turbo equalizer (TE) setting. Unlike previously developed SISO-DFEs, the present DFE scheme relies on extrinsic information formulation that directly takes into account the error propagation effect.
arxiv  

A Three-Stage-Concatenated Non-Linear MMSE Interference Rejection Combining Aided MIMO-OFDM Receiver and its EXIT-Chart Analysis

open access: yesIEEE Open Journal of Vehicular Technology
The demodulation reference signal of the 5G Multiple-Input Multiple-Output Orthogonal Frequency-Division Multiplexing (MIMO-OFDM) waveform has been designed for supporting Minimum Mean-Square Error-Interference Rejection Combining (MMSE-IRC) equalization,
Jue Chen   +7 more
doaj   +1 more source

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