Spectrum sharing scheme in cognitive radio networks based on primary limited feedback
A spectrum sharing scheme for a pair of secondary users co-existing with multiple primary users was proposed. The primary users exploit the limited feedback of channel quality information (CQI) to allocate their transmission power and rate. By overhearing the limited feedback of primary CQI, the sec...
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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.2014.04.012/ |
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| _version_ | 1841539764505804800 |
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| author | Huan-qin1 GAO Rong-fang SONG |
| author_facet | Huan-qin1 GAO Rong-fang SONG |
| author_sort | Huan-qin1 GAO |
| collection | DOAJ |
| description | A spectrum sharing scheme for a pair of secondary users co-existing with multiple primary users was proposed. The primary users exploit the limited feedback of channel quality information (CQI) to allocate their transmission power and rate. By overhearing the limited feedback of primary CQI, the secondary user accessed the channel with proper transmission power and rate while causing interference to the primary users and so the rate loss of the primary system. Under the primary rate loss constraint, the optimal transmit power and transmission rate for the secondary was obtained to maximize the secondary user throughput. Numerical results show that, with only 3 or 4 bits of feedback to each pri-mary user, the effective throughput of the secondary system is comparable to the case with both primary and secondary transmitters having the perfect CQI of the primary link. The simulation results demonstrate that the proposed spectrum sharing scheme can meet the primary rate loss constraint. |
| format | Article |
| id | doaj-art-c9c2d7dcecec4a69be5bb566afd41b5b |
| 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-c9c2d7dcecec4a69be5bb566afd41b5b2025-01-14T06:43:11ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2014-04-013510311159680987Spectrum sharing scheme in cognitive radio networks based on primary limited feedbackHuan-qin1 GAORong-fang SONGA spectrum sharing scheme for a pair of secondary users co-existing with multiple primary users was proposed. The primary users exploit the limited feedback of channel quality information (CQI) to allocate their transmission power and rate. By overhearing the limited feedback of primary CQI, the secondary user accessed the channel with proper transmission power and rate while causing interference to the primary users and so the rate loss of the primary system. Under the primary rate loss constraint, the optimal transmit power and transmission rate for the secondary was obtained to maximize the secondary user throughput. Numerical results show that, with only 3 or 4 bits of feedback to each pri-mary user, the effective throughput of the secondary system is comparable to the case with both primary and secondary transmitters having the perfect CQI of the primary link. The simulation results demonstrate that the proposed spectrum sharing scheme can meet the primary rate loss constraint.http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.04.012/cognitive radiolimited feedbackrate loss constraintspectrum sharing |
| spellingShingle | Huan-qin1 GAO Rong-fang SONG Spectrum sharing scheme in cognitive radio networks based on primary limited feedback Tongxin xuebao cognitive radio limited feedback rate loss constraint spectrum sharing |
| title | Spectrum sharing scheme in cognitive radio networks based on primary limited feedback |
| title_full | Spectrum sharing scheme in cognitive radio networks based on primary limited feedback |
| title_fullStr | Spectrum sharing scheme in cognitive radio networks based on primary limited feedback |
| title_full_unstemmed | Spectrum sharing scheme in cognitive radio networks based on primary limited feedback |
| title_short | Spectrum sharing scheme in cognitive radio networks based on primary limited feedback |
| title_sort | spectrum sharing scheme in cognitive radio networks based on primary limited feedback |
| topic | cognitive radio limited feedback rate loss constraint spectrum sharing |
| url | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.04.012/ |
| work_keys_str_mv | AT huanqin1gao spectrumsharingschemeincognitiveradionetworksbasedonprimarylimitedfeedback AT rongfangsong spectrumsharingschemeincognitiveradionetworksbasedonprimarylimitedfeedback |