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Half-spectrum OFDM ...
Half-spectrum OFDM to quadruple the spectral efficiency of underwater wireless optical communication with digital power division multiplexing
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- Wang, Yuan (författare)
- Zhejiang Univ, Natl Engn Res Ctr Opt Instruments, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn,Ningbo Innovat Ctr, Ningbo, Zhejiang, Peoples R China.
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- Zhang, Tianyi (författare)
- Zhejiang Univ, Natl Engn Res Ctr Opt Instruments, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn,Ningbo Innovat Ctr, Ningbo, Zhejiang, Peoples R China.
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- Fei, Chao (författare)
- Zhejiang Univ, Natl Engn Res Ctr Opt Instruments, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn,Ningbo Innovat Ctr, Ningbo, Zhejiang, Peoples R China.;Zhejiang Univ, NingboTech Univ, Sch Informat Sci & Engn, Ningbo, Zhejiang, Peoples R China.
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- Tian, Jiahan (författare)
- Zhejiang Univ, Natl Engn Res Ctr Opt Instruments, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn,Ningbo Innovat Ctr, Ningbo, Zhejiang, Peoples R China.
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- Zhang, Junwei (författare)
- Hong Kong Polytech Univ, Photon Res Inst, Dept Elect & Informat Engn, Hong Kong, Peoples R China.
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- Xie, Yitong (författare)
- Zhejiang Univ, Natl Engn Res Ctr Opt Instruments, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn,Ningbo Innovat Ctr, Ningbo, Zhejiang, Peoples R China.
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- Zhang, Fei (författare)
- Zhejiang Univ, Natl Engn Res Ctr Opt Instruments, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn,Ningbo Innovat Ctr, Ningbo, Zhejiang, Peoples R China.
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- Du, Ji (författare)
- Zhejiang Univ, Natl Engn Res Ctr Opt Instruments, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn,Ningbo Innovat Ctr, Ningbo, Zhejiang, Peoples R China.
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- Zhang, Guowu (författare)
- Zhejiang Univ, Natl Engn Res Ctr Opt Instruments, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn,Ningbo Innovat Ctr, Ningbo, Zhejiang, Peoples R China.
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- Wang, Gaoxuan (författare)
- Zhejiang Univ, Natl Engn Res Ctr Opt Instruments, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn,Ningbo Innovat Ctr, Ningbo, Zhejiang, Peoples R China.;Zhejiang Univ, NingboTech Univ, Sch Informat Sci & Engn, Ningbo, Zhejiang, Peoples R China.
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- Hong, Xiaojian (författare)
- Zhejiang Univ, Natl Engn Res Ctr Opt Instruments, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn,Ningbo Innovat Ctr, Ningbo, Zhejiang, Peoples R China.;Zhejiang Univ, NingboTech Univ, Sch Informat Sci & Engn, Ningbo, Zhejiang, Peoples R China.
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- He, Sailing (författare)
- KTH,Elektromagnetism och fusionsfysik,Zhejiang Univ, Natl Engn Res Ctr Opt Instruments, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn,Ningbo Innovat Ctr, Ningbo, Zhejiang, Peoples R China
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Zhejiang Univ, Natl Engn Res Ctr Opt Instruments, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn,Ningbo Innovat Ctr, Ningbo, Zhejiang, Peoples R China Zhejiang Univ, Natl Engn Res Ctr Opt Instruments, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn,Ningbo Innovat Ctr, Ningbo, Zhejiang, Peoples R China.;Zhejiang Univ, NingboTech Univ, Sch Informat Sci & Engn, Ningbo, Zhejiang, Peoples R China. (creator_code:org_t)
- Optica Publishing Group, 2024
- 2024
- Engelska.
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Ingår i: Applied Optics. - : Optica Publishing Group. - 1559-128X .- 2155-3165. ; 63:9, s. 2352-2361
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Improving the spectrum efficiency (SE) is an effective method to further enhance the data rate of bandwidthmultiplexing (NOFDM) with a compression factor of 0.5 can save half of the bandwidth without introducing any inter-carrier-interference (ICI) only if the total number of subcarriers is large enough, and we termed it as half-spectrum OFDM (HS-OFDM). To the best of our knowledge, this is the first reported work on a closed-form HS-OFDM signal in the discrete domain from the perspective of a correlation matrix. Due to the special mathematical property, no extra complex decoding algorithm is required at the HS-OFDM receiver, making it as simple as the conventional OFDM receiver. Compared with traditional OFDM, HS-OFDM can realize the same data rate, but with a larger signal-to-noise ratio (SNR) margin. To fully use the SNR resource of the communication system, we further propose a digital power division multiplexed HS-OFDM (DPDM-HS-OFDM) scheme to quadruple the SE of conventional OFDM for the bandwidth-starved UWOCs. The experimental results show that HS-OFDM can improve the receiver sensitivity by around 4 dB as opposed to conventional 4QAM-OFDM with the same data rate and SE. With the help of the DPDM-HS-OFDM scheme, the data rate of multi-user UWOC can reach up to 4.5 Gbps under the hard-decision forward error correction (HD-FEC) limit of a bit error rate (BER) of 3.8 x 10-3. Although there is some performance degradation in comparison with single-user HS-OFDM, the BER performance of multi-user DPDM-HS-OFDM is still superior to that of conventional single-user 4QAM-OFDM. Both single-user HS-OFDM and multi-user DPDM-HS-OFDM successfully achieve 2 Gbps/75 m data transmission, indicating that the DPDM-HS-OFDM scheme is of great importance in bandwidth-limited UWOC systems and has guiding significance to underwater wireless optical multiple access.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
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- Av författaren/redakt...
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Wang, Yuan
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Zhang, Tianyi
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Fei, Chao
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Tian, Jiahan
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Zhang, Junwei
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Xie, Yitong
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visa fler...
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Zhang, Fei
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Du, Ji
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Zhang, Guowu
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Wang, Gaoxuan
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Hong, Xiaojian
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He, Sailing
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visa färre...
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Telekommunikatio ...
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Applied Optics
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