Results 31 to 40 of about 8,203 (170)
Estimation for the Linear Model with Uncertain Covariance Matrices
, 2014 We derive a maximum a posteriori estimator for the linear observation model, where the signal and noise covariance matrices are both uncertain. The uncertainties are treated probabilistically by modeling the covariance matrices with prior inverse-Wishart
Bengtsson, Mats +4 more
core +1 more source
When Queueing Meets Coding: Optimal-Latency Data Retrieving Scheme in Storage Clouds [PDF]
, 2014 In this paper, we study the problem of reducing the delay of downloading data from cloud storage systems by leveraging multiple parallel threads, assuming that the data has been encoded and stored in the clouds using fixed rate forward error correction ...
Chen, Shengbo +7 more
core +2 more sources
On the non-Poissonian repetition pattern of FRB121102
, 2018 Rhe Fast Radio Burst FRB121102 has been observed to repeat in an irregular fashion. Using published timing data of the observed bursts, we show that Poissonian statistics are not a good description of this random process.
Opperman, Niels, Pen, Ue-Li, Yu, Hao-Ran
core +1 more source
Performance Evaluation of Low Density Spreading Multiple Access [PDF]
, 2012 In this paper, we evaluate the performance of Multicarrier-Low Density Spreading Multiple Access (MC-LDSMA) as a multiple access technique for mobile communication systems. The MC-LDSMA technique is compared with current multiple access techniques, OFDMA
AL-Imari, Mohammed +3 more
core +1 more source
Analysis of singular values PDF and CCDF on receiver‐side antennas correlated MIMO channels
Electronics Letters, 2013 Antennas proximity produces the antennas correlation effect which impacts MIMO systems performance. This reported work analyses the singular values complementary cumulative distribution function (CCDF) to evaluate the receiver‐side antennas correlation effect and the outcomes of the appropriate antennas usage, showing some results for a 4 × 4 MIMO ...
C. Benavente‐Peces +4 more
openaire +1 more source
A novel reduced complexity optimized PTS technique for PAPR reduction in wireless OFDM systems
Egyptian Informatics Journal, 2017 In this paper, we propose a novel low complexity Partial Transmit Sequence (PTS) technique employing Random phase sequence matrix (RPSM) for peak to average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems.
M.V.R. Vittal, K. Rama Naidu
doaj +1 more source
Geometrical effects on mobility [PDF]
, 2017 In this paper we analyze the effect of randomly deleting streets of a synthetic city on the statistics of displacements. Our city is constituted initially by a set of streets that form a regular tessellation of the euclidean plane. Therefore we will have
Lopez, Jorge H.
core +1 more source
Three‐Year Propagation Experiment at Ku‐, Ka‐, and Q‐Band in French West Indies
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT From January 2021 to December 2023, the Office National d'Etudes et de Recherches Aérospatiales (ONERA) and the Centre National d'Etudes Spatiales (CNES) conducted a three‐year Earth‐space propagation measurement campaign in Guadeloupe. The experiment used beacon receivers deployed in Pointe‐à‐Pitre airport to record signals at 11.2, 19.7, and
Jean‐Pascal Monvoisin +3 more
wiley +1 more source
Construction‐Free Polar Coding For Practical Entropy Coding Tasks
IET Communications, Volume 20, Issue 1, January/December 2026.A novel construction‐free polar coding technique is proposed for practical data compression applications. ABSTRACT This paper explores the practical application of source polar codes to entropy coding tasks in modern transform coding pipelines. Transform coding remains the predominant and rapidly evolving framework for compressing complex real‐world ...
Zichang Ren, Cheng Zhang, Yuping Zhao
wiley +1 more source
Window-based UFMC technique for 5G systems
Wasit Journal of Engineering Sciences, 2021 In this paper, we investigate the universal filtered multi-carrier system (UFMC) for 5G and subsequent connections with the aid of the MATLAB package. It can be considered that the UFMC technology provides an advantage against inter-symbol interference (
Safa N. Idi +2 more
doaj +1 more source