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They are also important for nonlinear multistage detectors (decorrelating decision feedback detector, LMMSE decision feedback detector, etc).
The decorrelating detector [3], the decision feedback detector [4], the minimum mean squared error (MMSE) [5], and multistage detectors [6] are examples of suboptimum multiuser detectors.
Motivated by this fact, several sub-optimal strategies have been developed: the linear detector [10], the successive interference cancellation (SIC) [11], the parallel interference cancellation (PIC) [12], and the minimum mean-square error (MMSE) decision feedback detector [13].
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The group pseudo-decorrelator, the group MMSE detector and the pseudo-decorrelating decision-feedback detector are proposed by Kapur et al. [4].
To achieve the best performance, multiuser detection (MUD) techniques, such as optimum detector, linear decorrelating detector, decision-feedback detector, and successive interference cancellation.
Multiuser decision-feedback detectors (DFDs) based on the minimum mean-squared error (MMSE) are reported in [3] over multipath.
A non-linear MMSE multiuser decision-feedback detectors (DFDs) are relatively simple and can perform significantly better than a linear multiuser detector.
We then examine the feasibility of utilizing a decision feedback (DF) MIMO detector rather than linear detection as the first stage of our receiver.
As of now, most humanitarians actually willing to go hunt for landmines must listen to audio feedback from a metal detector.
Note that as mentioned in Section 4.3, when using the channel-aware iterative detector, information feedback is only conducted for those subcarriers employing ML detection.
An exposure indicator or exposure index (EI) gives the user feedback about the actual detector dose level of a digital clinical radiograph.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com