Volume 11, Issue 8, August 2019

 

 

The Analysis of Improved Sinc Power Pulse and Rectangular Pulse on OFDM System through Frequency Selective Fading Channel
 

The Analysis of Improved Sinc Power Pulse and Rectangular Pulse on OFDM System through Frequency Selective Fading Channel

Pages: 164-171 (8) | [Full Text] PDF (752 KB)
KAMD Prayoga, NMED Wirastuti, N Pramaita
Electrical Engineering Department, Engineering Faculty, Udayana University, Indonesia

Abstract -
The combination of OFDM (orthogonal frequency division multiplexing)and Pulse Shaping system can reduce Inter Carrier Interference (ICI) and the occurred error. This research aimed at investigating the performance comparison of OFDM system without pulse shaping and OFDM with pulse shaping Improved Sinc Power (ISP) pulse as well as Rectangular pulse through Frequency Selective Fading channel, viewed from BER (bit error rate) compared to Eb/No (energy per bit to noise power spectral density ratio). This research utilized simulation method by using Matlab R2018a program. The obtained result of the simulation for the OFDM system performancewith pulse shaping ISP pulse gained better result than the OFDM Rectangular pulse and OFDM without pulse shaping. On the Frequency Selective Fading transmission channel, in order to gain BER value of 10-1, the OFDM system with pulse shaping ISP pulse required Eb/No of 2 dB. Meanwhile, the Rectangular pulse OFDM system and OFDM without pulse shaping required Eb/No of 6 dB and 10 dB respectively.
 
Index Terms - OFDM, Pulse Shaping, ICI, ISP pulse, Rectangular pulse, Frequency Selective Fading

Citation - KAMD Prayoga, NMED Wirastuti, N Pramaita. "The Analysis of Improved Sinc Power Pulse and Rectangular Pulse on OFDM System through Frequency Selective Fading Channel ." International Journal of Computer Engineering and Information Technology 11, no. 8 (2019): 164-171.

RoCA: A Humanoid Robotic Assistive Technology for Children with Autism
 

RoCA: A Humanoid Robotic Assistive Technology for Children with Autism

Pages: 172-177 (6) | [Full Text] PDF (347 KB)
RO Mensah, JB Hayfron-Acquah, Mi Asante
Kwame Nkrumah University of Science and Technology, Kumasi

Abstract -
Current research suggests that autistic children are drawn to robots and are likely to benefit from robot mediated interventions. However, many autistic children from resource constrained environments have not benefited from robot enhanced therapy due to the high costs associated with the development and deployment of social robots. This paper presents the implementation of a novel low cost robotic assistive technology for children with autism to aid caregivers in their classroom activities. RoCA is a medium sized humanoid robot which has been equipped with motion, speech and interaction capabilities to encourage the children to learn through play.
 
Index Terms - RoCA, autism, humanoid, Ghana, children

Citation - RO Mensah, JB Hayfron-Acquah, Mi Asante. "RoCA: A Humanoid Robotic Assistive Technology for Children with Autism." International Journal of Computer Engineering and Information Technology 11, no. 8 (2019): 172-177.

Brilliant but Needy Students Selection Using Fuzzy Logic
 

Brilliant but Needy Students Selection Using Fuzzy Logic

Pages: 178-185 (8) | [Full Text] PDF (732 KB)
P Aazagreyir, JBK Damnyag, M Kuuboore
University of Professional Studies, Accra, University of Ghana

Abstract -
ABSTRACTIt is famous that, one of the ways to break even the inequality between richer students and Brilliant but Needy Students(BbNSs) is via scholarships. However, the selection process of brilliant but needy students is often entangle with uncertainty, lack of transparency and unfairness from the experts and the vagueness of the experts’ language used linguistically. The fuzziness inherent in human reasoning couple with the biases of human by nature preclude some highly qualified brilliant but needy students from getting selected for scholarships. This study deploys Fuzzy Logic Approach(FLA) to develop an evaluation model for selecting brilliant but needy students for scholarships. The paper uses the Mamdani Inference algorithm with four input variables that constituted the input membership function and the output membership function is made of one output variable. The research concludes that; FLA objectively select the truly qualified brilliant but needy students for scholarships based on degree of membership.
 
Index Terms - Brilliant but Needy, Fuzzy Logic, Selection, Students

Citation - P Aazagreyir, JBK Damnyag, M Kuuboore. "Brilliant but Needy Students Selection Using Fuzzy Logic." International Journal of Computer Engineering and Information Technology 11, no. 8 (2019): 178-185.