Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/184868
Title: DYWAMIT: Asynchronous Wideband Dynamic Spectrum Sensing and Access System
Authors: Chunxiao Jiang;Chunxing Jiang;Norman C. Beaulieu;Yong Li;Yulong Zou;Yong Ren
Year: 2017
Publisher: IEEE
Abstract: Dynamic spectrum access (DSA) is a promising solution for enhancing the utilization efficiency of spectrum resources. In DSA, spectrum sensing is crucial and cooperative spectrum sensing has been confirmed as a promising technology that can combat the wireless channel fading problem. Most current works have assumed that the secondary users (SUs) are synchronous with the primary users' (PUs) network. However, on one hand, the SUs may have no information about the PUs' communication protocols. On the other hand, communications among the PUs are not based on synchronous operation in some systems. In order to address such problems, the DYWAMIT, an asynchronous wideband DSA system, is proposed. In this scheme, the SUs need not maintain synchronism with the PUs, enabling the SUs to cognitively and asynchronously access primary channels even without knowing the communication protocols of the PUs. Performance analysis and simulations are conducted to evaluate the proposed DYWAMIT algorithm; in particular, the average throughput of the SUs, accounting for the asynchronism between the SUs and PUs, is derived for four cases of interest. Some important future research challenges are highlighted.
URI: http://localhost/handle/Hannan/184868
volume: 11
issue: 3
More Information: 1777,
1788
Appears in Collections:2017

Files in This Item:
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7047235.pdf1.54 MBAdobe PDF
Title: DYWAMIT: Asynchronous Wideband Dynamic Spectrum Sensing and Access System
Authors: Chunxiao Jiang;Chunxing Jiang;Norman C. Beaulieu;Yong Li;Yulong Zou;Yong Ren
Year: 2017
Publisher: IEEE
Abstract: Dynamic spectrum access (DSA) is a promising solution for enhancing the utilization efficiency of spectrum resources. In DSA, spectrum sensing is crucial and cooperative spectrum sensing has been confirmed as a promising technology that can combat the wireless channel fading problem. Most current works have assumed that the secondary users (SUs) are synchronous with the primary users' (PUs) network. However, on one hand, the SUs may have no information about the PUs' communication protocols. On the other hand, communications among the PUs are not based on synchronous operation in some systems. In order to address such problems, the DYWAMIT, an asynchronous wideband DSA system, is proposed. In this scheme, the SUs need not maintain synchronism with the PUs, enabling the SUs to cognitively and asynchronously access primary channels even without knowing the communication protocols of the PUs. Performance analysis and simulations are conducted to evaluate the proposed DYWAMIT algorithm; in particular, the average throughput of the SUs, accounting for the asynchronism between the SUs and PUs, is derived for four cases of interest. Some important future research challenges are highlighted.
URI: http://localhost/handle/Hannan/184868
volume: 11
issue: 3
More Information: 1777,
1788
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7047235.pdf1.54 MBAdobe PDF
Title: DYWAMIT: Asynchronous Wideband Dynamic Spectrum Sensing and Access System
Authors: Chunxiao Jiang;Chunxing Jiang;Norman C. Beaulieu;Yong Li;Yulong Zou;Yong Ren
Year: 2017
Publisher: IEEE
Abstract: Dynamic spectrum access (DSA) is a promising solution for enhancing the utilization efficiency of spectrum resources. In DSA, spectrum sensing is crucial and cooperative spectrum sensing has been confirmed as a promising technology that can combat the wireless channel fading problem. Most current works have assumed that the secondary users (SUs) are synchronous with the primary users' (PUs) network. However, on one hand, the SUs may have no information about the PUs' communication protocols. On the other hand, communications among the PUs are not based on synchronous operation in some systems. In order to address such problems, the DYWAMIT, an asynchronous wideband DSA system, is proposed. In this scheme, the SUs need not maintain synchronism with the PUs, enabling the SUs to cognitively and asynchronously access primary channels even without knowing the communication protocols of the PUs. Performance analysis and simulations are conducted to evaluate the proposed DYWAMIT algorithm; in particular, the average throughput of the SUs, accounting for the asynchronism between the SUs and PUs, is derived for four cases of interest. Some important future research challenges are highlighted.
URI: http://localhost/handle/Hannan/184868
volume: 11
issue: 3
More Information: 1777,
1788
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7047235.pdf1.54 MBAdobe PDF