Cooperative Spectrum Sensing with Coded and Uncoded Decision Fusion under Correlated Shadowed Fading Report Channels
This article addresses the impact of forward error correction when applied to the report channel transmissions of a centralized decision fusion cooperative spectrum sensing scheme designed to detect idle ofdma subchannels. The ofdma signal is transmitted over slow frequency-selective multipath Rayle...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-12-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/19/1/51 |
| _version_ | 1811307094786179072 |
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| author | Lucas dos Santos Costa Dayan Adionel Guimarães Rausley Adriano Amaral de Souza Roberto César Dias Vilela Bomfin |
| author_facet | Lucas dos Santos Costa Dayan Adionel Guimarães Rausley Adriano Amaral de Souza Roberto César Dias Vilela Bomfin |
| author_sort | Lucas dos Santos Costa |
| collection | DOAJ |
| description | This article addresses the impact of forward error correction when applied to the report channel transmissions of a centralized decision fusion cooperative spectrum sensing scheme designed to detect idle ofdma subchannels. The ofdma signal is transmitted over slow frequency-selective multipath Rayleigh fading channels and sensed using the maximum eigenvalue detection test statistic. The decisions on the OFDMA subchannel occupancy are transmitted to a fusion center over report channels represented by a shadowed fading model combining a three-dimensional spatially correlated shadowing with a slow and flat multipath Rayleigh fading. Binary bch and Repetition codes are used to protect these decisions. Results show that shadowing correlation severely deteriorates the overall spectrum sensing performance and that error correction may not be able to protect the report channel transmissions. It can be even worse with respect to the system performance especially at low signal-to-noise regimes. In the situations in which error correction is effective, the Repetition code is capable of outperforming the BCH, meaning that the diversity gain may be more relevant than the coding gain when the spectrum sensing decisions are subjected to correlated shadowing. |
| first_indexed | 2024-04-13T08:58:01Z |
| format | Article |
| id | doaj.art-22c6beb5b05f45b88ae7b5092680c595 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T08:58:01Z |
| publishDate | 2018-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-22c6beb5b05f45b88ae7b5092680c5952022-12-22T02:53:14ZengMDPI AGSensors1424-82202018-12-011915110.3390/s19010051s19010051Cooperative Spectrum Sensing with Coded and Uncoded Decision Fusion under Correlated Shadowed Fading Report ChannelsLucas dos Santos Costa0Dayan Adionel Guimarães1Rausley Adriano Amaral de Souza2Roberto César Dias Vilela Bomfin3National Institute of Telecommunications—Inatel Av. João de Camargo 510, Santa Rita do Sapucaí, MG 37540-000, BrazilNational Institute of Telecommunications—Inatel Av. João de Camargo 510, Santa Rita do Sapucaí, MG 37540-000, BrazilNational Institute of Telecommunications—Inatel Av. João de Camargo 510, Santa Rita do Sapucaí, MG 37540-000, BrazilVodafone Chair Mobile Communication Systems, Technische Universität Dresden, D-01062 Dresden, GermanyThis article addresses the impact of forward error correction when applied to the report channel transmissions of a centralized decision fusion cooperative spectrum sensing scheme designed to detect idle ofdma subchannels. The ofdma signal is transmitted over slow frequency-selective multipath Rayleigh fading channels and sensed using the maximum eigenvalue detection test statistic. The decisions on the OFDMA subchannel occupancy are transmitted to a fusion center over report channels represented by a shadowed fading model combining a three-dimensional spatially correlated shadowing with a slow and flat multipath Rayleigh fading. Binary bch and Repetition codes are used to protect these decisions. Results show that shadowing correlation severely deteriorates the overall spectrum sensing performance and that error correction may not be able to protect the report channel transmissions. It can be even worse with respect to the system performance especially at low signal-to-noise regimes. In the situations in which error correction is effective, the Repetition code is capable of outperforming the BCH, meaning that the diversity gain may be more relevant than the coding gain when the spectrum sensing decisions are subjected to correlated shadowing.http://www.mdpi.com/1424-8220/19/1/51cognitive radiocorrelated shadowingmedsensor information fusionshadowed fadingspectrum sensing |
| spellingShingle | Lucas dos Santos Costa Dayan Adionel Guimarães Rausley Adriano Amaral de Souza Roberto César Dias Vilela Bomfin Cooperative Spectrum Sensing with Coded and Uncoded Decision Fusion under Correlated Shadowed Fading Report Channels Sensors cognitive radio correlated shadowing med sensor information fusion shadowed fading spectrum sensing |
| title | Cooperative Spectrum Sensing with Coded and Uncoded Decision Fusion under Correlated Shadowed Fading Report Channels |
| title_full | Cooperative Spectrum Sensing with Coded and Uncoded Decision Fusion under Correlated Shadowed Fading Report Channels |
| title_fullStr | Cooperative Spectrum Sensing with Coded and Uncoded Decision Fusion under Correlated Shadowed Fading Report Channels |
| title_full_unstemmed | Cooperative Spectrum Sensing with Coded and Uncoded Decision Fusion under Correlated Shadowed Fading Report Channels |
| title_short | Cooperative Spectrum Sensing with Coded and Uncoded Decision Fusion under Correlated Shadowed Fading Report Channels |
| title_sort | cooperative spectrum sensing with coded and uncoded decision fusion under correlated shadowed fading report channels |
| topic | cognitive radio correlated shadowing med sensor information fusion shadowed fading spectrum sensing |
| url | http://www.mdpi.com/1424-8220/19/1/51 |
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