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Telecommunications System & Management

ISSN: 2167-0919

Open Access

Articles in press and Articles in process

    Full Length Research Paper Pages: 1 - 3

    Reduction of Mutual Coupling in Dual Patch Antenna by Defected Ground Structure

    Vivian Lazarus* and Sumit KR Sharma

    Defected ground structures are deliberate irregularities in the ground plane to intentionally modify antenna characteristics for emulating an aspect which is intended to modify certain parameter in order to improve antenna performance. In a dual patch antenna, it is desirable to reduce mutual coupling between radiating elements which in turn would ensure greater power transfer to radiation in desired direction as intended. Same has been achieved in this paper by employing I-shaped Defected ground structure in ground plane. This gave advantage of avoiding complex fabrication design of dual patch antenna without interference in other antenna parameters including bandwidth and frequency of operation while achieving 5.5 dB of suppression in mutual coupling.

      Research Article Pages: 1 - 4

      An Analysis of the Potential Risk and Fraud Involved in Mobile Money Transaction in Freetown Sierra Leone

      Morris Ayodele Peacock*

      The research work focused on looking at an analysis of the potential risk and fraud involved in mobile money transactions in Sierra Leone with a focus on Orange and Africell mobile telecommunication companies. The implementation of mobile money service like any other financial service faces risks and challenges. This research addresses fraud as a challenge in the provision of mobile money service to customers in Sierra Leone. Portable cash utilization for exchanges is consistently developing across Africa with the possibility to change the money prevailing economy of this landmass to be credit only. With the expanded utilization of portable cash administrations and number of business use cases planned every day, it is basic to plan a comprehensive way to deal with versatile cash hazard, security that will decrease security openings and forestall misrepresentation, as some versatile cash specialist organizations have lost great many Leones to this developing danger. This examination, consequently, looks at the actions that versatile organization administrators giving portable cash administrations can utilize to forestall extortion. The concentrate additionally examines the portable cash clients' insight about the linkage between cell phone assurance and security of the versatile cash administration on their telephones. The examination was a contextual analysis of Orange and Africell versatile media transmission organization in Sierra Leone and utilized subjective and quantitative information gathered through surveys and organized meetings of key staff of the portable organization administrator (MNO), versatile cash supporters and specialists of these administrations. Some of the main findings of this research include the general perception that there is no direct linkage between mobile phone protection and mobile money risk/security. It was further identified that one of the major causes of consumer driven fraud is PIN sharing giving it to MNO agents. In addressing mobile money fraud, it is suggested that the service provider should give mobile money security tips to the users at least twice in a year through Short Message Service (SMS) to alert them of ways to enhance the security of their mobile phones.

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