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Senapati, Anupama
- Direction of Arrival Estimation for Smart Antenna using a Combined Blind Source Separation and Multiple Signal Classification Algorithm
Authors
1 School of Electronics Engineering, KIIT University, Bhubaneswar - 751024, Odisha, IN
2 School of Electronics Engineering, KIIT University, Bhubaneswar, India, IN
Source
Indian Journal of Science and Technology, Vol 9, No 18 (2016), Pagination:Abstract
Smart antenna system after determination of Direction of Arrival (DOA) of signal, generates beam toward user and null toward interferer and enhances the security and capacity in mobile network. The objective of the present work is to determine weaker coherent and non-coherent signals with low Signal-to-Ratio (SNR) in heavily faded areas, where performances of other conventional algorithms are not good. For the determination of weaker signal accurately, a combined method using Blind Source Separation (BSS) based Joint Approximation Diagonalisation of Eigen matrices (JADE) and Multiple Signal Classification (MUSIC) algorithm is used. From simulated results, it is found that the resolution of MUSIC algorithm can be enhanced using this combined method. Also the capability of detection of angle of incoming signal can be enhanced using this proposed method. Since, smart antenna system is one of the main technologies in fourth generation mobile communication and beyond, the proposed method may be useful for next generation mobile communication.Keywords
Blind Source Separation, Coherent and Non-Coherent Signals, Direction of Arrival, Multiple Signal Classification, Smart Antenna.- Health Concerns in Elderly:A Survey and Public Education in Bhubaneswar, India
Authors
1 University of Birmingham, GB
2 Director of Medical Services at J. G. Hospital, TRL Krosaki Refractories Limited, Jharsuguda, IN
3 Consultant Psychiatrist, Odisha Medical and Health Services, Government of Odisha, IN
4 KIIT Deemed to be University, Bhubaneswar, IN
5 MRCPsych, Consultant Psychiatrist, Black Country Partnership NHS Foundation Trust, Wolverhampton, GB
Source
Indian Journal of Public Health Research & Development, Vol 10, No 12 (2019), Pagination: 493-498Abstract
Background: While it is apparent that old age is associated with multiple health concerns the extent of its multiplicity suggestive of the burden is often not clear. It was intended to find out self-reported health concerns for the duration of one month and cardiovascular risk factors in older adults.
Method: In a cross-sectional survey attendees of a Healthy Ageing Conference were approached with a semi-structured questionnaire about their health concerns and cardiovascular risks. Risk of cardiovascular event in 10 years based on QRISK3 was calculated.
Results: A considerable proportion of elderly had range of physical symptoms, depressive mood state and memory problems. Mean number of health problems reported were 4.8±3.3 (male 4.4±3.1 and female 5.0±4.3). Cardiovascular risk was high, mean QRISK3 score for males were 22.2% (±14.4) and for females 10.3% (±6.6) (p<0.05). On an average the heart age was increased by 7.9±6.2 years (8.6±6.6 years for males and 5.0±3.3 for females). The relative risk was 2.1 for males and 1.5 for females. The symptoms and risk factors were elicited easily and the process probably facilitated improving the awareness about the health concerns holistically.
Conclusions: The results suggested the extent of health concerns in general and cardiovascular risks in particular and may help to reflect about required range of appropriate public health awareness and intervention programmes in the community.