Articles, Conference and Workshop Papers Collection
Permanent URI for this collectionhttp://10.10.97.169:4000/handle/123456789/81
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Browsing Articles, Conference and Workshop Papers Collection by Author "Ali, Md. Abbas"
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Item Behavior and techniques for improving performance of OFDM systems for wireless communications(2015-01) Barakabitze, Alcardo Alex; Ali, Md. AbbasOrthogonal frequency division multiplexing (OFDM) is a special case of multicarrier transmission which transmits a stream of data over a number of lower data rate subcarriers. OFDM splits the total transmission bandwidth into a number of orthogonal and non-overlapping subcarriers and transmit the collection of bits called symbols in parallel using these subcarriers. This paper gives a total insight of various Peak -to Average Power Reduction (PAPR) techniques and principles of OFDM systems used in wireless communications. The research paper places a focus also on OFDM behaviors and techniques like Carrier Frequency Offset (CFO) estimation that improves performance of OFDM for wireless communications. Finally, the paper provides a number of wireless communication standards and many of the applications where OFDM systems are used.Item Evolution of lte and related technologies towards IMT-advanced(International journal of advanced research in computer science and software engineering, 2015) Ali, Md. Abbas; Barakabitze, Alcardo AlexThe Long Term Evolution (LTE) is an emerging technology, which is standardized by the Third Generation Partnership Project (3GPP) and evolving to meet the International Mobile Telecommunication Advanced (IMT-Advanced) requirements named as LTE-Advanced. The main goal of LTE is to provide a high data rate, low latency and packet optimized radio access technology supporting flexible bandwidth deployments. The network architecture of LTE has been designed with the goal to support packet-switched traffic with seamless mobility and great quality of service. In this paper, we provide in-depth, the evolution and the major basic features of LTE to LTE-Advanced. Finally, we summarize the LTE-Advanced features in tabular format and show how LTE can fulfil the IMT-Advanced requirements.