20 research outputs found
A study on the discharge characteristics of He-Ne-Xe gas mixture in an AC plasma display panel
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Όλ¬Έ(λ°μ¬)--μμΈλνκ΅ λνμ :μ 기곡νλΆ,2000.Docto
The Politics of the Process of Policy Transfer in the Anti-Discrimination Act - Case Study on the Anti-Discrimination Act and the Disability Discrimination Act-
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Όλ¬Έ (μμ¬)-- μμΈλνκ΅ νμ λνμ : νμ νκ³Ό, 2015. 2. ꡬ민κ΅.λ³Έ μ°κ΅¬μ λͺ©μ μ κ΅μ μΈκΆκ·λ²μ μ€ννλ μ°¨λ³κΈμ§λ²μ μ μ±
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μ΄μ μ΄λ‘ μ κ³Όμ μμμ μ μ±
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μ΄μ λ°λ μ§λ¨μ μνΈμμ©μΌλ‘ νΌμ³μ§λ μμμ μ μ±
μ§νμ λΆμνλ‘ μΌμκ³ , νΉν μ μ±
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μ΄μ 주체λ€μ μν₯λ ₯κ³Ό μ μ±
μ΄μ λ°λ μ§λ¨μ μ ν ν¬κΈ°μ λ³νμ λ°λΌ μ κ°λλ μ μ±
μμμ νΉμ§μ μ΄νλ€.
μ₯μ μΈμ°¨λ³κΈμ§λ²κ³Ό μΌλ°μ μ°¨λ³κΈμ§λ²μ λͺ¨λ κ΅μ μΈκΆκ·λ²μ μ€ννλ μ€μν λ²μμΈ λμμ λ²μμ΄ λ΄κ³ μλ ꡬμ μλ¨, μμ λ±μ λ΄μ©κ³Ό ν¨κ» ννμ μ μ¬μ±μ΄ λ§μΌλ©° μ
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μ₯μ μΈμ°¨λ³κΈμ§λ² μ¬λ‘μμ 1κΈ°μλ μ΄ μκΈ°μ μ₯μ μΈ λ¨μ²΄λ€μ μ₯μ μΈμ°¨λ³κΈμ§λ² μ μ μ μν μ‘°μ§νμ λ²μ μ°κ΅¬μ λͺ°λνμκ³ μ€μ€λ‘ μ μ±
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μμμ λ³νλ₯Ό μ΄λ μ€λΉλ₯Ό νμλ€. μ΄ν μ₯μ μΈμ°¨λ³κΈμ§λ² 2κΈ°μμ μ₯μΆλ ¨μ μ‘°μ§μ μν₯λ ₯μ΄ λ°νλμκ³ , μ₯μ κ³ μ μΉμΈλ€μ κ΅ν μ§μΆ, μ λΆμ κ³΅μ½ μ΄ν λ±κ³Ό λ§λ¬Όλ¦¬λ©΄μ μ μ±
μ°¬μ± μ§λ¨μ μν₯λ ₯μ΄ κ°ν΄μ‘λ€. λ°λ©΄ μ μ±
μ λ°λνλ μ§λ¨μ μ νμ μ½νλ€. μ΄μ μ₯μ μΈμ°¨λ³κΈμ§λ²μ μ μ±
κ³Όμμμμμ μ κ°λμλ€. μ₯μ μΈμ°¨λ³κΈμ§λ²μ μμμ κ³ μνμ§λ λͺ»νμΌλ μμμ΄ μλΉν λ°μλ ννμ ννμμΌλ‘ μ μ μ μ΄λ₯Έλ€.
μΌλ°μ μ°¨λ³κΈμ§λ² μ¬λ‘μμ 1κΈ°λ μ μ±
μ°¬μ± μ§λ¨μ μ½ν μν₯λ ₯κ³Ό μ μ±
λ°λ μ§λ¨μ μ½ν μ νμΌλ‘ μ μ±
κ²°νμμμμ μ κ°λκΈ° μμνμλ€. λ³κΈμ§λ²λ λ€λ₯Έ μμμ μ μ±
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κ²°νμμμ μμΉνκ² λμλ€. μ΄ν μΌλ°μ μ°¨λ³κΈμ§λ²μ 2κΈ°μμ λ²λ¬΄λΆμ μμ μ νκ² λ 보μ κΈ°λ
κ΅ λ¨μ²΄λ€μ΄ μ‘°μ©ν λμμ΄ μλ μ€μ§μ μ‘°μ§νμ νλμ λμλ©΄μ μ μ±
μ΄μ μ λ°λνλ μ§λ¨λ€μ μ νμ΄ κ°ν΄μ‘λ€. λ μ΄μ λμνμ¬ μΌλ°μ μ°¨λ³κΈμ§λ²μ λν μΈμμ΄ μ¦κ°ν μ±μ μμμ λ¨μ²΄λ₯Ό λΉλ‘―ν μΈκΆ, μλ―Όλ¨μ²΄λ€λ μ‘°μ§νμ λμλ©΄μ μν₯λ ₯μ λ°ννμ¬ κ·Ήμ¬ν μ μ±
κ°λ±μμμΌλ‘ μ κ°λμλ€. μΌλ°μ μ°¨λ³κΈμ§λ²μ 3κΈ°μμ μ μ±
λ°λ μ§λ¨μ μ ν ν¬κΈ°κ° μ μ§λλ κ°μ΄λ° κ΅κ°μΈκΆμμνμ 무κ΄μ¬, μ λΆμ κ΅νμ λΉμΌκ΄μ μΈ νλ, μ±μ μμμ λ¨μ²΄μ λν κ³Όλν λΆλ΄ λ±μ μν₯μΌλ‘ μ μ±
μ°¬μ± μ£Όμ²΄λ€μ μν₯λ ₯μ μ½νλμλ€. μ΄μ μΌλ°μ μ°¨λ³κΈμ§λ²μ μ μ±
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μ 1μ μ°κ΅¬μ νμμ± λ° λͺ©μ
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μ 2μ μ₯μ μΈμ°¨λ³κΈμ§λ²μ κ΅λ΄ μμ© κ³Όμ 1κΈ° (2001. 1 - 2004. 5) : μ μ±
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μ 3μ μ₯μ μΈμ°¨λ³κΈμ§λ²μ κ΅λ΄ μμ© κ³Όμ 2κΈ° (2004. 5 - 2007. 4) : μ μ±
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μ 4μ μΌλ°μ μ°¨λ³κΈμ§λ²μ κ΅λ΄ μμ© κ³Όμ 3κΈ° (2008. 5 - 2014. 8) : μ μ±
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μ 5μ μκ²°
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μ 1μ μ°κ΅¬κ²°κ³Όμ μμ½
μ 2μ μ°κ΅¬μ μμ¬μ κ³Ό νκ³
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κ·Έλ¦Ό μ°¨λ‘Maste
HFC νΌν©λ맀μ μνμκ΄λ΄ μμΆμ΄μ λ¬μ κ΄ν μ°κ΅¬
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Όλ¬Έ(μμ¬)--μμΈλνκ΅ λνμ :κΈ°κ³κ³΅νκ³Ό,1998.Maste
A Study on Efficient Transmitter Structure of FTN Method Based on Unequal Error Probability
In next generation satellite broadcasting system, requirement of high throughput efficiency has been increasing continuously. To increase throughput efficiency and improve bit error performance, FTN (Faster Than Nyquist) method is employed in new satellite standard, DVB-S3 (Digital Video Broadcasting - Satellite - Third Generation) system and FOBTV(Future of Broadcast Television) system.
FTN is a method of transmitting information at a rate higher than the allowed Nyquist limit. In order to improve the transmission efficiency by applying the FTN method, according to increasing the interference rate. However, performance degrade arising from ISI(Inter-symbol interference). The other attempt is MIMO(Multiple Input Multiple Output)-FTN transmission method, which combines the MIMO and FTN methods to improve throughput, can maximize the improvement of throughput, however its decoding method and removal of interference is difficult, the research about which is under developed yet. And MIMO-FTN method requires accurate channel estimation for each channel, yet does not improve performance compared to the SISO (Single Input Single Output)βFTN method.
Therefore, in this thesis, proposed an unequal error probability (UEP) based multiband FTN transmission method that transmits the FTN interference differently applied to each band of multiband to each one. This method, by classifying band depending on the importance of the encoded bits of a channel encoder, improves performance in the same overall interference by allocating less FTN interference to the band to which important bits belong and more FTN interference to the band to which unimportant bits belong.
Lastly, proposed an OFDM(Orthogonal Frequency Division Multiplexing)-FTN method based on UEP algorithm in multipath channels as in massive mobile communication networks such as 5G. The OFDM method divides data into multiple carrier signals, and multiplexes and transmits them by adding orthogonality to minimize the interval between divided carrier signals. Since OFDM with high spectrum efficiency is efficient in a frequency selective fading channel environment and a multipath channel environment, it can maximize the band efficiency by applying the FTN method and also guarantee the performance in multipath channels.μ 1 μ₯ μλ‘ 1
μ 2 μ₯ FTN μ μ‘ κΈ°λ² 3
2.1 FTN μ νΈ λͺ¨λΈλ§ 3
2.2 λ¨μΌ λ°΄λ FTN μ μ‘ κΈ°λ² 4
2.3 λ€μ€ λ°΄λ FTN μ μ‘ κΈ°λ² 6
2.4 FTN μ νΈ λ³΅νΈλ₯Ό μν ν°λ³΄ λ±ν κΈ°λ² 9
μ 3 μ₯ UEP κΈ°λ°μ FTN μ μ‘ κΈ°λ² μ‘μμ λͺ¨λΈ μ μ 13
3.1 UEP κΈ°λ°μ FTN μ μ‘ κΈ°λ² μ‘μμ λͺ¨λΈ 13
3.1.1 HSS κΈ°λ°μ LDPC λ³΅νΈ λ°©μμ μν UEP μ€μ λ°©μ 16
3.2 OFDM κΈ°λ²κ³Ό κ²°ν©ν FTN μ μ‘ κΈ°λ² 22
μ 4 μ₯ λͺ¨μμ€ν κ²°κ³Ό λΆμ 26
4.1 UEP κΈ°λ°μ FTN μ μ‘ κΈ°λ² μ±λ₯ λΉκ΅ λΆμ 26
4.2 λ€μ€ κ²½λ‘ μ±λμμμ UEP κΈ°λ°μ OFDM-FTN μ±λ₯ λΆμ 32
μ 5 μ₯ κ²° λ‘ 38
κ°μ¬μ κΈ 40
μ°Έκ³ λ¬Έν 41Maste