Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Jeongyoon Shim"'
Publikováno v:
Applied Mechanics and Materials. :878-882
In this paper, we propose a low complexity integer frequency offset estimation scheme based on coherence phase bandwidth for orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme overcomes the effect of the timing offset via
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc96da59d218cf80c5dd38489af184a1
https://doi.org/10.4028/www.scientific.net/amm.479-480.878
https://doi.org/10.4028/www.scientific.net/amm.479-480.878
Publikováno v:
Applied Mechanics and Materials. :865-869
In this paper, we propose a novel unambiguous correlation function with a high and sharp main-peak for binary offset carrier (BOC) signal tracking. First, we construct a correlation function with a low and narrow main-peak using partial correlation f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::965b2a0d38acbedc2160a20aabfaa0cc
https://doi.org/10.4028/www.scientific.net/amm.479-480.865
https://doi.org/10.4028/www.scientific.net/amm.479-480.865
Publikováno v:
Applied Mechanics and Materials. :778-782
In this paper, we propose a cyclostationarity-based spectrum sensing scheme for dynamic traffic circumstances. First, we model the spectrum sensing problem in dynamic traffic circumstances as a binary hypothesis testing problem where primary users (P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b082cc10928953c5f2b138d03e1a53c
https://doi.org/10.4028/www.scientific.net/amm.479-480.778
https://doi.org/10.4028/www.scientific.net/amm.479-480.778
Publikováno v:
The Journal of Korea Information and Communications Society. :365-370
In this paper, we propose robust blind estimators for the frequency offset of orthogonal frequency division multiplexing in non-Gaussian noise environments. We first propose a maximum likelihood (ML) estimator in non-Gaussian noise modeled as a compl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22513658c96217d0612f32f09af352f1
https://doi.org/10.7840/kics.2013.38c.4.365
https://doi.org/10.7840/kics.2013.38c.4.365
Publikováno v:
The Journal of Korean Institute of Communications and Information Sciences. :937-942
In cognitive radio (CR) systems, the secondary user (SU) performs the spectrum sensing to determine the presence of the primary user (PU) on the PU's frequency band. In practical cases, the PU would arrive and depart randomly in the sensing duration
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd15e48cca1be72844f99c92c1199e1c
https://doi.org/10.7840/kics.2012.37a.11.937
https://doi.org/10.7840/kics.2012.37a.11.937
Publikováno v:
VITAE
This paper proposes a novel spectrum sensing scheme for cognitive radio (CR) systems in high traffic environments where primary users (PUs) might randomly depart or arrive during the sensing period of a CR user. We first model the spectrum sensing pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b56944101da66d265d0b0458127ccb08
https://doi.org/10.1109/vitae.2013.6617082
https://doi.org/10.1109/vitae.2013.6617082
Publikováno v:
VITAE
This paper proposes a novel direct sequence ultra wideband (DS-UWB) radar system with a reduced correlation processing time. The distance estimator in the proposed DS-UWB radar accumulates the correlator outputs to average out the noise, and thus, re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32eb021bd74bd8b9ebb7f1d057a2a92e
https://doi.org/10.1109/vitae.2013.6617064
https://doi.org/10.1109/vitae.2013.6617064
Publikováno v:
ICOIN
In this paper, we propose a threshold-based frequency offset estimation scheme for orthogonal frequency division multiplexing (OFDM) systems. By using the correlation threshold and coherence phase bandwidth, the proposed scheme not only provides the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af22981c40aaa877da5dd5512a136a7e
https://doi.org/10.1109/icoin.2013.6496401
https://doi.org/10.1109/icoin.2013.6496401