Zobrazeno 1 - 10
of 127
pro vyhledávání: '"Chee Kyun Ng"'
Autor:
M. A. Gadam, Maryam Abdulazeez Ahmed, Chee Kyun Ng, Nor Kamariah Nordin, Aduwati Sali, Fazirulhisyam Hashim
Publikováno v:
Journal of Computer Networks and Communications, Vol 2016 (2016)
Poor cell selection is the main challenge in Picocell (PeNB) deployment in Long Term Evolution- (LTE-) Advanced heterogeneous networks (HetNets) because it results in load imbalance and intercell interference. A selection technique based on cell rang
Externí odkaz:
https://doaj.org/article/8f80483328064bb99e66fa01be2cb141
Publikováno v:
Journal of Cardiovascular Development and Disease, Vol 3, Iss 1, p 8 (2016)
Hypertension is a common chronic disease in the elderly. This study aimed to determine the effects of age, ethnicity, gender, education, marital status, nutritional parameters, and blood elements on the risk of high blood pressure in the Malaysian el
Externí odkaz:
https://doaj.org/article/0ae814c08c7e40649bb8720060402b4f
Publikováno v:
Trends in Telecommunications Technologies
It is well known that cellular mobile phone systems have evolved from 1G and 2G that use frequency and time division multiple access (FDMA and TDMA) systems respectively, to code division multiple access (CDMA) of third generation (3G) systems (Chen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be453a8ab1880bd27f0570ae281d24e7
http://www.intechopen.com/articles/show/title/dynamic-space-code-multiple-access-dscma-system-a-double-interference-cancellation-multiple-access-s
http://www.intechopen.com/articles/show/title/dynamic-space-code-multiple-access-dscma-system-a-double-interference-cancellation-multiple-access-s
Publikováno v:
Wireless Personal Communications. 102:19-30
Massive multiple-input multiple-output (MIMO) technology is a promising technique having a high spectral efficiency for future wireless systems. Counterintuitively, the practical issues of transmitted signals are being attenuated by fading, propagati
Autor:
Chee Kyun Ng, Nor Kamariah Noordin, Shaiful Jahari Hashim, Emad Hmood Salman, Fazirulhisyam Hashim
Publikováno v:
Wireless Personal Communications. 101:1261-1279
One of the complex problems nowadays in communication systems is the lack of frequency spectrum. To solve this problem, cognitive radio is considered the best candidate that can opportunistically exploit the spectrum. The periodogram based spectrum s
Autor:
Borhanuddin Mohd Ali, Mustafa Ismael Salman, Aduwati Sali, Chee Kyun Ng, Muntadher Qasim Abdulhasan, Nor Kamariah Noordin
Publikováno v:
Computer Networks. 112:108-121
Opportunistic frequency-domain scheduling and link adaptation enable the long term evolution (LTE) cellular systems to maximize the throughput. Successful scheduling and link adaptation require perfect channel state information (CSI) at the eNodeB. H
Autor:
Emad Hmood Salman, Shaiful Jahari Hashim, Fazirulhisyam Hashim, Chee Kyun Ng, Nor Kamariah Noordin
Publikováno v:
Telecommunication Systems. 65:215-228
Advanced communication systems, such as long term evolution (LTE) and LTE-advanced (LTE-A) systems, promise to increase the number of users with high-speed data exchange. However, it leads to spectrum scarcity because of the huge size of data exchang
Publikováno v:
International Journal of Communication Systems. 29:2650-2668
Autor:
Nor Kamariah Noordin, Chee Kyun Ng, Muntadher Qasim Abdulhasan, Fazirulhisham Bin Hashim, Mustafa Ismael Salman, Shaiful Jahari Hashim
Publikováno v:
Wireless Personal Communications. 82:2323-2349
Channel quality indicator (CQI) feedback in long-term evolution (LTE) system is an essential technique in describing the instantaneous channel state information. The CQI calculations highly depend on the accuracy of the channel estimation process in
Review of Channel Quality Indicator Estimation Schemes for Multi-User MIMO in 3GPP LTE/LTE-A Systems
Autor:
Mustafa Ismael Salman, Fazirulhisham Bin Hashim, Shaiful Jahari Hashim, Nor Kamariah Noordin, Muntadher Qasim Abdulhasan, Chee Kyun Ng
Publikováno v:
KSII Transactions on Internet and Information Systems. 8:1848-1868
Multiple-in multiple-out (MIMO) in long-term evolution (LTE) is an essential factor in achieving high speed data rates and spectral efficiency. The unexpected growth in data rate demand has pushed researchers to extend the benefits of multi-user MIMO