Gerschgorin disk theorem based spectrum sensing for wideband cognitive radio
Gerschgorin disk theorem (GDT) based wideband spectrum sensing methods, namely Gerschgorin likelihood estimate(GLE) algorithm and Gerschgorin disk radii iteration(GDRI) algorithm, were proposed for cognitive radios. By means of exploring the possibility of utilizing GDT in wideband spectrum sensing,...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2014-04-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.04.001/ |
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| _version_ | 1841539715705077760 |
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| author | Bin SHEN Shu WANG Qiong HUANG Qian-bin CHEN |
| author_facet | Bin SHEN Shu WANG Qiong HUANG Qian-bin CHEN |
| author_sort | Bin SHEN |
| collection | DOAJ |
| description | Gerschgorin disk theorem (GDT) based wideband spectrum sensing methods, namely Gerschgorin likelihood estimate(GLE) algorithm and Gerschgorin disk radii iteration(GDRI) algorithm, were proposed for cognitive radios. By means of exploring the possibility of utilizing GDT in wideband spectrum sensing, the occupied and the idle licensed subbands was distingwished by respectively identifying the cardinalities of the corresponding subband sets. With an aim to strengthen the performance of GLE and GDRI, a subband continuity based wideband sensing algorithm was further proposed. Simulation results show that GLE sensing performance remains consistent when the SNR is low, whereas GDRI requires no a priori knowledge of the noise power and the PU signal and it overcomes the practical problem of small spectrum observation samples. With salient performance and practical feasibility, the proposed GLE and GDRI may serve as candidate wideband sensing technologies for cognitive radios. |
| format | Article |
| id | doaj-art-299e4fbc9d8240f7ad3becaffc87c1f0 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2014-04-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-299e4fbc9d8240f7ad3becaffc87c1f02025-01-14T06:43:05ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2014-04-013511059680695Gerschgorin disk theorem based spectrum sensing for wideband cognitive radioBin SHENShu WANGQiong HUANGQian-bin CHENGerschgorin disk theorem (GDT) based wideband spectrum sensing methods, namely Gerschgorin likelihood estimate(GLE) algorithm and Gerschgorin disk radii iteration(GDRI) algorithm, were proposed for cognitive radios. By means of exploring the possibility of utilizing GDT in wideband spectrum sensing, the occupied and the idle licensed subbands was distingwished by respectively identifying the cardinalities of the corresponding subband sets. With an aim to strengthen the performance of GLE and GDRI, a subband continuity based wideband sensing algorithm was further proposed. Simulation results show that GLE sensing performance remains consistent when the SNR is low, whereas GDRI requires no a priori knowledge of the noise power and the PU signal and it overcomes the practical problem of small spectrum observation samples. With salient performance and practical feasibility, the proposed GLE and GDRI may serve as candidate wideband sensing technologies for cognitive radios.http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.04.001/cognitive radiowideband spectrum sensingGerschgorin disk theoremGerschgorin unitary transform |
| spellingShingle | Bin SHEN Shu WANG Qiong HUANG Qian-bin CHEN Gerschgorin disk theorem based spectrum sensing for wideband cognitive radio Tongxin xuebao cognitive radio wideband spectrum sensing Gerschgorin disk theorem Gerschgorin unitary transform |
| title | Gerschgorin disk theorem based spectrum sensing for wideband cognitive radio |
| title_full | Gerschgorin disk theorem based spectrum sensing for wideband cognitive radio |
| title_fullStr | Gerschgorin disk theorem based spectrum sensing for wideband cognitive radio |
| title_full_unstemmed | Gerschgorin disk theorem based spectrum sensing for wideband cognitive radio |
| title_short | Gerschgorin disk theorem based spectrum sensing for wideband cognitive radio |
| title_sort | gerschgorin disk theorem based spectrum sensing for wideband cognitive radio |
| topic | cognitive radio wideband spectrum sensing Gerschgorin disk theorem Gerschgorin unitary transform |
| url | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.04.001/ |
| work_keys_str_mv | AT binshen gerschgorindisktheorembasedspectrumsensingforwidebandcognitiveradio AT shuwang gerschgorindisktheorembasedspectrumsensingforwidebandcognitiveradio AT qionghuang gerschgorindisktheorembasedspectrumsensingforwidebandcognitiveradio AT qianbinchen gerschgorindisktheorembasedspectrumsensingforwidebandcognitiveradio |