Performance Analysis of Prioritized Handoff Schemes in Wireless Systems
Uduak Idio Akpan,
Constance Kalu,
Aniebiet Kingsley Inyang
Issue:
Volume 2, Issue 1, July 2014
Pages:
1-6
Received:
27 May 2014
Accepted:
13 June 2014
Published:
30 June 2014
Abstract: The rapid increase in the use of mobile devices demands the need to meet Quality of service requirements of the users. These requirements however, (application demand and allocation) often lead to network congestion and call drops. To deal with this issues (call drop and congestion), many prioritized handoff schemes have been proposed by many researchers. In our previous paper entitled “Development of an Improved Scheme for Minimizing Handoff Failure due to Poor Signal Quality”, we proposed a prioritized handoff scheme which integrates the direction of movement of the mobile device to the M+G scheme in making handoff decision. In this paper, we make comparative analysis of that scheme by comparing its performance with other existing schemes. The MatLab software was used for the simulation.
Abstract: The rapid increase in the use of mobile devices demands the need to meet Quality of service requirements of the users. These requirements however, (application demand and allocation) often lead to network congestion and call drops. To deal with this issues (call drop and congestion), many prioritized handoff schemes have been proposed by many resea...
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Improvements Encoding Energy Benefit in Protected Telecommunication Data Transmission Channels
Juliy Mikolayovych Boiko,
Alexander Ivanovych Eromenko
Issue:
Volume 2, Issue 1, July 2014
Pages:
7-14
Received:
3 September 2014
Accepted:
13 September 2014
Published:
20 September 2014
Abstract: The features of using noise resistant encoding for protection from errors in digital data transmission channels with phase modulation have been analyzed. The building principles and encoder and decoder schemes of turbo-code were observed. The digital data transmission system with outer and inner turbo-encoder has been developed. The recommendations to type and structure of cascade encoder components have been given. Analytical relationships and research results describing bit error probability of cascade turbo-encoder components are represented. By using simulative modeling tools Matlab-Simulink the basic characteristics and features of digital transmission channel with cascade turbo-encoding and digital phase modulation were researched. The energy benefit gained by using cascade structures has been defined.
Abstract: The features of using noise resistant encoding for protection from errors in digital data transmission channels with phase modulation have been analyzed. The building principles and encoder and decoder schemes of turbo-code were observed. The digital data transmission system with outer and inner turbo-encoder has been developed. The recommendations...
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