Results 11 to 20 of about 856,367 (318)
Enhanced estimation of a noisy quantum channel using entanglement [PDF]
, 2001 We discuss the estimation of channel parameters for a noisy quantum channel - the so-called Pauli channel - using finite resources. It turns out that prior entanglement considerably enhances the fidelity of the estimation when we compare it to an ...
Dietmar Fischer +3 more
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The Extended-Window Channel Estimator for Iterative Channel-and-Symbol Estimation [PDF]
EURASIP Journal on Wireless Communications and Networking, 2005 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Renato R. Lopes, John R. Barry
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Joint Channel Estimation Algorithm Based on DFT and DWT
Applied Sciences, 2022 Channel estimation is an important component of orthogonal frequency division multiplexing (OFDM) systems. The existence of virtual subcarriers leads to energy spreading in the time-domain when using Inverse Fast Fourier Transform (IFFT), resulting in ...
Zhe Zhang, Xin Bian, Mingqi Li
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Efficient Estimation of Pauli Channels [PDF]
ACM Transactions on Quantum Computing, 2020 Pauli channels are ubiquitous in quantum information, both as a dominant noise source in many computing architectures and as a practical model for analyzing error correction and fault tolerance. Here, we prove several results on efficiently learning Pauli channels and more generally the Pauli projection of a quantum channel.
Steven T. Flammia, Joel J. Wallman
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Dispensing with Channel Estimation… [PDF]
IEEE Vehicular Technology Magazine, 2010 In this article, we investigate the feasibility of noncoherent detection schemes in wireless communication systems as a low-complexity alternative to the family of coherent schemes. The noncoherent schemes require no channel knowledge at the receiver for the detection of the received signal, while the coherent schemes require channel inherently complex
El Hajjar, Mohammed, Hanzo, Lajos
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Channel estimation with noisy entanglement [PDF]
Physics Letters A, 2001 We analyze the Pauli-channel estimation with mixed nonseparable states. It turns out that within a specific range entanglement can serve as a nonclassical resource. However, this range is rather small, that is entanglement is not very robust for this application.
Dietmar Fischer +2 more
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On channel estimation in OFDM systems [PDF]
1995 IEEE 45th Vehicular Technology Conference. Countdown to the Wireless Twenty-First Century, 2002 The use of multi-amplitude signaling schemes in wireless OFDM systems requires the tracking of the fading radio channel. The paper addresses channel estimation based on time-domain channel statistics. Using a general model for a slowly fading channel, the authors present the MMSE and LS estimators and a method for modifications compromising between ...
van de Beek, Jaap Jan +4 more
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Unitarity Estimation for Quantum Channels
IEEE Transactions on Information Theory, 2023 Estimating the unitarity of an unknown quantum channel $\mathcal{E}$ provides information on how much it is unitary, which is a basic and important problem in quantum device certification and benchmarking. Unitarity estimation can be performed with either coherent or incoherent access, where the former in general leads to better query complexity while ...
Kean Chen +3 more
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Parameter Estimation of Quantum Channels [PDF]
IEEE Transactions on Information Theory, 2008 Final ...
Yuan Feng +4 more
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Estimation in the Group Action Channel [PDF]
2018 IEEE International Symposium on Information Theory (ISIT), 2018 5 pages ...
João M. Pereira +2 more
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