DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 박현철 | - |
dc.contributor.author | Kim, Pansoo | - |
dc.contributor.author | 김판수 | - |
dc.date.accessioned | 2024-08-08T19:31:48Z | - |
dc.date.available | 2024-08-08T19:31:48Z | - |
dc.date.issued | 2024 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1100119&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/322210 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 정보통신공학과, 2024.2,[vii, 77 p. :] | - |
dc.description.abstract | This dissertation is about robust synchronization techniques in NOMA-based satellite communication systems. Recently, satellite communication has played an important role in constructing a three-dimensional spatial network that provides a wireless access network to areas where terrestrial networks cannot reach. Efficiency in data transmission can be increased by distributing and connecting large amounts of data through geostationary and nongeostationary orbit satellite communication networks. In these satellite communication transmission technologies, various transmission techniques have been proposed depending on the service type, and this paper also proposes various synchronization technologies depending on each satellite communication frequency, protocol, and channel environment. First, synchronization technologies that are robust to LDM technology to improve data rates in the same band in geostationary satellite broadcasting and communication environments, are proposed. In the case of LDM technology, robust synchronization technology is required because performance degradation occurs when removing interference due to co-channel interference problems due to the use of the same RF and non-linear amplifiers and phase noise. Second, when FTN technology is applied to improve transmission efficiency per bandwidth in a satellite communication environment, inter-symbol interference occurs. Therefore, a symbol synchronization technology that is robust to inter-symbol interference is needed, and this paper proposes a technique close to the maximum likelihood algorithm. Lastly, robust synchronization technology is proposed that is robust to non-geostationary satellite or high-speed mobile terminals in short packet transmissions such as random access channel environments. In particular, the proposed scheme is suitable for timing synchronization in a large Doppler error environment, and its performance evaluation is carried out. In summary, the proposed synchronization techniques presented in this dissertation play a vital role in improving the overall transmission efficiency of satellite communication systems, addressing specific challenges associated with LDM, FTN, and high Doppler effect conditions. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | 위성통신▼a저궤도 위성통신▼a비지상 네트워크▼a도플러 주파수 오차▼a모뎀▼a수신기▼a동기화▼a임의접속 | - |
dc.subject | Satellite Communication▼aLow orbit satellite communication▼aNon-terrestrial network▼aDoppler frequency error▼aModem▼aReceiver▼aSynchronization▼aRandom access | - |
dc.title | (A) Study on robust synchronization in NOMA-based satellite communication systems | - |
dc.title.alternative | 비직교 다중접속 기반 위성통신시스템에 강인한 동기 기술에 관한 연구 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :정보통신공학과, | - |
dc.contributor.alternativeauthor | Park, Hyuncheol | - |
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