OALib Journal
  OALib Journal is an all-in-one open access journal (ISSN Print: 2333-9705, ISSN Online: 2333-9721). It accepts a manuscript for the peer-review processing, typesetting, publication and then allocated to one of the 322 subject areas. The article processing charge for publishing in OALib journal is Only $99. For more details, please contact service@oalib.com. Submit now
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Nov 17, 2020Open    AccessArticle

Modeling of MIMO-OFDM Channel with STBC and Directivity to Combat Fading and Co-Channel Interference

Ziyad Khalaf Farej, Ahmed T. Al-Najafi
A wireless communication system for cellular technology is currently considered a very important topic for mobile phone. The design of such systems needs to include their multipath and fading main problems. In this paper, a MIMO-OFDM channel is designed and modeled to combat such problems, as well as STBS and directivity are also involved in this design to increase system reliability and enhance BER performance. The modeling and simulation process of the designed systems are carried out using Ma...
Open Access Library J. Vol.7, 2020
Doi:10.4236/oalib.1106809


Oct 27, 2020Open    AccessArticle

Analysis and Performance Evaluation of Bluetooth Low Energy Piconet Network

Ziyad Khalaf Farej, Aydin M. Saeed
This paper presents the performance analysis of Bluetooth Low Energy (BLE) IEEE 802.15.1 standard in the piconet topology networks. The performance of the BLE network is analyzed in terms of connection interval (CI) and the number of slaves (NS) by using OMNET (v4.6) simulator. In the performance investigation process Data Length Extension (DLE) features is used with an application payload size of 60 bytes in order to achieve the best performance in a BLE (P2P) network. The modeled networks an...
Open Access Library J. Vol.7, 2020
Doi:10.4236/oalib.1106814


May 22, 2017Open    AccessArticle

An SIS Epidemic Model with Infective Medium and Feedback Mechanism on Scale-Free Networks

Xiongding Liu, Tao Li, Yuanmei Wang, Chen Wan, Jing Dong
In this paper, a modified SIS (susceptible-infected-susceptible) model with infective medium and feedback mechanism on scale-free networks is presented. The model is suited to describe some epidemic spreading which are not only transmitting by medium but also spreading between individuals by direct contacts. Considering biological relevance and people’s subjecti
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Open Access Library J. Vol.4, 2017
Doi:10.4236/oalib.1103598


Aug 06, 2014Open    AccessArticle

Performance Evaluation of Rotational Interleaver for IDMA Scheme in Acoustic Environment

Prachi Tripathi, Shivani Dixit, M. Shukla

The whole globe is covered universally by water with a majority space. In view of extraction of minerals as well as national security reasons, underwater communication has become quite important for all the mankind. Researchers, around the world are working for optimizing the multiple scheme in acoustic channel. Recently, the researchers have reported valuable employability of IDMA scheme in acoustic communica

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Open Access Library J. Vol.1, 2014
Doi:10.4236/oalib.1100761


Jul 29, 2014Open    AccessArticle

Simulation and Comparative Analysis of SS-LMS & RLS Algorithms for Electronic Dispersion Compensation

Gurpreet Kaur, Gurmeet Kaur

In this paper electronic feed forward equalization is performed to mitigate the link chromatic dispersion. The equalizer coefficients are computed by a decision-directed process based on the sign-sign least mean square and the recursive least square algorithm. Therefore, this paper evaluates the performance of these algorithms in chromatic dispersion compensation at bit rate of 10 Gb/s. This paper compares these two adaptation algorithms for receiver based on analogue elec

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Open Access Library J. Vol.1, 2014
Doi:10.4236/oalib.1100676


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