Research on Optimal Energy Efficiency of OFDM VLC-RF Aggregation System Based on Finite Alphabet Inputs
In the case of finite alphabet inputs, information transmission rate limit of orthogonal frequency division multiplexing (OFDM) visible light communications (VLC) and radio frequency (RF) aggregation systems is still unknown. Therefore, the unclosed expression information transmission rate and its l...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Control and Information Technology
2022-08-01
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| Series: | Kongzhi Yu Xinxi Jishu |
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| Online Access: | http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2096-5427.2022.04.400 |
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| _version_ | 1849224926094950400 |
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| author | LU Shanmei FANG Xiao HE Lingyan LI Bing MA Shuai LI Shiyin |
| author_facet | LU Shanmei FANG Xiao HE Lingyan LI Bing MA Shuai LI Shiyin |
| author_sort | LU Shanmei |
| collection | DOAJ |
| description | In the case of finite alphabet inputs, information transmission rate limit of orthogonal frequency division multiplexing (OFDM) visible light communications (VLC) and radio frequency (RF) aggregation systems is still unknown. Therefore, the unclosed expression information transmission rate and its lower bound with closed expression of OFDM VLC-RF aggregation system are derived based on mutual imformation function, and the problem of energy efficiency maximization is studied based on the two communication rates. Specifically, the energy efficiency maximization problem satisfying the spectrum efficiency (SE) threshold, total electric power and average optical power constraints is studied. At the same time, the Dinkelbach-type algorithm is used to transform the energy efficiency maximization nonconvex problem into a series of convex sub-problems, and then the interior point algorithm is used to solve it. Simulation results show that when SE threshold increases, energy efficiency first remains constant and then decreases, and energy efficiency based on the lower bound of information transmission rate can be used as a low complexity approximation of energy efficiency based on information transmission rate. The finite alphabet inputs VLC-RF aggregation system studied in this paper provides a new direction for practical communication aggregation system research. |
| format | Article |
| id | doaj-art-0e96251a4d044aa0b67746dfc6abe221 |
| institution | Kabale University |
| issn | 2096-5427 |
| language | zho |
| publishDate | 2022-08-01 |
| publisher | Editorial Office of Control and Information Technology |
| record_format | Article |
| series | Kongzhi Yu Xinxi Jishu |
| spelling | doaj-art-0e96251a4d044aa0b67746dfc6abe2212025-08-25T06:48:00ZzhoEditorial Office of Control and Information TechnologyKongzhi Yu Xinxi Jishu2096-54272022-08-01717929037250Research on Optimal Energy Efficiency of OFDM VLC-RF Aggregation System Based on Finite Alphabet InputsLU ShanmeiFANG XiaoHE LingyanLI BingMA ShuaiLI ShiyinIn the case of finite alphabet inputs, information transmission rate limit of orthogonal frequency division multiplexing (OFDM) visible light communications (VLC) and radio frequency (RF) aggregation systems is still unknown. Therefore, the unclosed expression information transmission rate and its lower bound with closed expression of OFDM VLC-RF aggregation system are derived based on mutual imformation function, and the problem of energy efficiency maximization is studied based on the two communication rates. Specifically, the energy efficiency maximization problem satisfying the spectrum efficiency (SE) threshold, total electric power and average optical power constraints is studied. At the same time, the Dinkelbach-type algorithm is used to transform the energy efficiency maximization nonconvex problem into a series of convex sub-problems, and then the interior point algorithm is used to solve it. Simulation results show that when SE threshold increases, energy efficiency first remains constant and then decreases, and energy efficiency based on the lower bound of information transmission rate can be used as a low complexity approximation of energy efficiency based on information transmission rate. The finite alphabet inputs VLC-RF aggregation system studied in this paper provides a new direction for practical communication aggregation system research.http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2096-5427.2022.04.400VLC-RF aggregation systemorthogonal frequency division multiplexingenergy efficiencyinformation transmission rate |
| spellingShingle | LU Shanmei FANG Xiao HE Lingyan LI Bing MA Shuai LI Shiyin Research on Optimal Energy Efficiency of OFDM VLC-RF Aggregation System Based on Finite Alphabet Inputs Kongzhi Yu Xinxi Jishu VLC-RF aggregation system orthogonal frequency division multiplexing energy efficiency information transmission rate |
| title | Research on Optimal Energy Efficiency of OFDM VLC-RF Aggregation System Based on Finite Alphabet Inputs |
| title_full | Research on Optimal Energy Efficiency of OFDM VLC-RF Aggregation System Based on Finite Alphabet Inputs |
| title_fullStr | Research on Optimal Energy Efficiency of OFDM VLC-RF Aggregation System Based on Finite Alphabet Inputs |
| title_full_unstemmed | Research on Optimal Energy Efficiency of OFDM VLC-RF Aggregation System Based on Finite Alphabet Inputs |
| title_short | Research on Optimal Energy Efficiency of OFDM VLC-RF Aggregation System Based on Finite Alphabet Inputs |
| title_sort | research on optimal energy efficiency of ofdm vlc rf aggregation system based on finite alphabet inputs |
| topic | VLC-RF aggregation system orthogonal frequency division multiplexing energy efficiency information transmission rate |
| url | http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2096-5427.2022.04.400 |
| work_keys_str_mv | AT lushanmei researchonoptimalenergyefficiencyofofdmvlcrfaggregationsystembasedonfinitealphabetinputs AT fangxiao researchonoptimalenergyefficiencyofofdmvlcrfaggregationsystembasedonfinitealphabetinputs AT helingyan researchonoptimalenergyefficiencyofofdmvlcrfaggregationsystembasedonfinitealphabetinputs AT libing researchonoptimalenergyefficiencyofofdmvlcrfaggregationsystembasedonfinitealphabetinputs AT mashuai researchonoptimalenergyefficiencyofofdmvlcrfaggregationsystembasedonfinitealphabetinputs AT lishiyin researchonoptimalenergyefficiencyofofdmvlcrfaggregationsystembasedonfinitealphabetinputs |