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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 林茂昭 | zh_TW |
| dc.contributor.advisor | Mao-Chao Lin | en |
| dc.contributor.author | 林梵勳 | zh_TW |
| dc.contributor.author | Fan-Hsun Lin | en |
| dc.date.accessioned | 2024-08-08T16:25:07Z | - |
| dc.date.available | 2024-08-09 | - |
| dc.date.copyright | 2024-08-08 | - |
| dc.date.issued | 2024 | - |
| dc.date.submitted | 2024-08-05 | - |
| dc.identifier.citation | References
[1] Navita and Amandeep. Performance Analysis of OFDMA, MIMO and SC-FDMA Technology in 4G LTE Networks. In 2016 6th International Conference - Cloud System and Big Data Engineering (Confluence), pages 554–558, 2016. [2] Z. Ding, Y. Liu, J. Choi, Q. Sun, M. Elkashlan, I. Chih-Lin, and H. V. Poor. Application of Non-Orthogonal Multiple Access in LTE and 5G Networks. IEEE Communications Magazine, 55(2):185–191, 2017. [3] L. Dai, B. Wang, Y. Yuan, S. Han, C. I, and Z. Wang. Non-Orthogonal Multiple Access for 5G: Solutions, Challenges, Opportunities, and Future Research Trends. IEEE Communications Magazine, 53(9):74–81, Sep. 2015. [4] P. Li, L. Liu, K. Wu, and W. K. Leung. Interleave Division Multiple-Access. IEEE Transactions on Wireless Communications, 5(4):938–947, April 2006. [5] H. Nikopour and H. Baligh. Sparse Code Multiple Access. In 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), pages 332–336, September 2013. [6] M. Moltafet, N. Mokari, M. R. Javan, H. Saeedi, and H. Pishro-Nik. Psma for 5G: Network Throughput Analysis. In 2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), pages 1–6, 2017. [7] B. B. X. Dai, Z. Zhang, S. Chen, and S. Sun. Pattern Division Multiple Access: A New Multiple Access Technology for 5G. IEEE Wireless Communications, 25(2):54–60, April 2018. [8] Y. Hsu, B. Chang, C. Chang, P. Su, I. Yeh, K. Cheng, Y. Lin, and M. Lin. Gain Division Multiple Access for Transmissions over Independent Fading Channels. In 2019 IEEE VTS Asia Pacific Wireless Communications Symposium (APWCS), pages 1–5, 2019. [9] R. Hoshyar, F. P. Wathan, and R. Tafazolli. Novel Low-Density Signature for Synchronous CDMA Systems over AWGN Channel. IEEE Transactions on Signal Processing, 56(4):1616–1626, 2008. [10] H.H.Fan. Study on GDMA, LDS-CDMA and HDS-CDMA for Fading Channels. Master’s thesis, National Taiwan University, 2022. [11] M.-C. Lin, Y.-Q. Yang, C.-Y. Chang, and S.-K. Lee. An Uplink Random Access Scheme Based on ALOHA System Assisted by Gain Division Multiple Access. IEEE Access, 11:28 887–28 895, 2023. [12] Y.-H. Chen. The Application of GDMA and HDS-CDMA to Random Access Channel. Master’s thesis, National Taiwan University, 2023. [13] M.-C. Lin, S.-K. Lee, H.-H. Fan, and Y.-H. Chen. Gdma, LDS-CDMA, and HDS-CDMA for Uplink Communication Systems. In 2023 VTS Asia Pacific Wireless Communications Symposium (APWCS), pages 1–5, 2023. [14] C.-Y. Cheng. Design and Application of Gain-Division Multiple Access. Master’s thesis, National Taiwan University, 2021. [15] C. Chang, S. Lee, and M. Lin. Performance Comparison of GDMA, LDS-CDMA, and SCMA for Transmissions over Rayleigh Fading Channels. In 2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall), 2021. [16] N. Abramson. The ALOHA System: Another Alternative for Computer Communications. In Proc. Fall Joint Comput. Conf., pages 281–285, Nov. 1970. [17] M. S. Chowdhury, K. Ashrafuzzaman, and K. S. Kwak. Saturation Throughput Analysis of IEEE 802.15.6 Slotted ALOHA in Heterogeneous Conditions. IEEE Wireless Communications Letters, 3(3):257–260, 2014. [18] S. S. Lam. A Carrier Sense Multiple Access Protocol for Local Networks. Comput. Netw., 4(1):21–32, February 1980. [19] K. Kumazawa, H. Okada, M. Matsui, K. Tategami, D. Goto, K. Itokawa, F. Yamashita, and M. Katayama. Transmission Control Considering Different Available Channels for CRDSA/IRSA in Satellite IoT Systems. IEEE Access, 11:135377–135384, 2023. [20] Y. Jin and T.-J. Lee. Throughput Analysis of NOMA-ALOHA. IEEE Transactions on Mobile Computing, 21(4):1463–1475, 2022. [21] H. Okada, T. Yamazato, M. Katayama, and A. Ogawa. Queueing Analysis of CDMA Slotted ALOHA Systems with Finite Buffer and Finite Population Assumptions. In ICC ’98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM’98 (Cat. No.98CH36220), pages 407–411 vol.1, 1998. | - |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/93825 | - |
| dc.description.abstract | 非正交的多重接取（NOMA）已被提議用來取代未來通信系統中的正交多重存取。一般而言，一些此領域知名的研究可以分為功率領域NOMA、碼域NOMA和混合NOMA。
分增益多重存取（GDMA）是將功率領域NOMA概念延伸至不僅僅考慮功率也考慮相位。在GDMA中，多個用戶可以共享單一資源，並且通過利用其不同的通道增益來區分接收到的信號中嵌入的傳送信號。 低密度簽名碼分碼多重存取（LDS-CDMA）及近期所提出的高密度簽名碼分碼多重存取（HDS-CDMA）可以歸類為碼域NOMA。此外，這些多重存取技術還可以與低密度奇偶檢查（LDPC）碼和正交頻分多工（OFDM）結合使用。 隨機接取（Random Access）是無線通訊中的一部份，本文依據先前文獻所提出的透過分增益多重存取技術結合ALOHA的系統(OFDM-GDMA-ALOHA)和高密度簽名碼分碼多重存取技術結合ALOHA的系統(OFDM-HDS-ALOHA)進行結合並拓展。此外，我們考慮了一些重傳機制並對數據包的重傳次數設置了限制。 | zh_TW |
| dc.description.abstract | Gain Division Multiple Access (GDMA) extends the concept of power domain NOMA. Users simultaneously access the same resource and can be distinguished by leveraging their different channel gains.
Low-Density Signature Code Division Multiple Access (LDS-CDMA) and the recently proposed High-Density Signature Code Division Multiple Access (HDS-CDMA) are code domain NOMA. Additionally, these multiple access techniques can be combined with Low-Density Parity-Check (LDPC) codes and Orthogonal Frequency Division Multiplexing (OFDM). Random Access is a part of wireless communications. This thesis focuses on the systems combining GDMA technology with ALOHA (OFDM-GDMA-ALOHA) and HDS-CDMA technology with ALOHA (OFDM-HDS-ALOHA). Moreover, we consider some retransmission mechanism and set a limit on the number of packet retransmissions. The situation with finite buffer is also studied. | en |
| dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2024-08-08T16:25:07Z No. of bitstreams: 0 | en |
| dc.description.provenance | Made available in DSpace on 2024-08-08T16:25:07Z (GMT). No. of bitstreams: 0 | en |
| dc.description.tableofcontents | Contents
Page Acknowledgements ii 中文摘要 iii Abstract iv Contents vi List of Figures viii List of Tables xi Chapter 1 Introduction 1 Chapter 2 Gain Division Multiple Access 4 2.1 Detection Principle . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Implementation Method . . . . . . . . . . . . . . . . . . . . . . . . 9 2.2.1 GDMA BPSK implementation . . . . . . . . . . . . . . . . . . . . 10 2.2.2 GDMA QPSK implementation . . . . . . . . . . . . . . . . . . . . 12 Chapter 3 LDS-CDMA and HDS-CDMA 16 3.1 LDS-CDMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.1.1 System Model and Encoding . . . . . . . . . . . . . . . . . . . . . 18 3.1.2 Decoding Process . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.1.2.1 Initialization . . . . . . . . . . . . . . . . . . . . . . . 18 3.1.2.2 Iteration . . . . . . . . . . . . . . . . . . . . . . . . . 19 3.1.2.3 Decision . . . . . . . . . . . . . . . . . . . . . . . . . 20 3.2 HDS-CDMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.2.1 (2,3,0,3) HDS-CDMA and (4,6,0,0,0,6) HDS-CDMA . . . . . . . . 21 3.2.2 Decoding Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . 22 3.2.2.1 First Algorithm : IND Decoding . . . . . . . . . . . . 22 3.2.2.2 Second Algorithm : MAP and ML Decoding . . . . . . 23 3.2.2.3 Third Algorithm : MPA Decoding . . . . . . . . . . . 28 3.3 Simulation Results of LDS-CDMA and HDS-CDMA . . . . . . . . . 32 3.4 Error Correcting Code and OFDM Systems . . . . . . . . . . . . . . 36 3.4.1 Brief Reviews of LDPC and OFDM . . . . . . . . . . . . . . . . . 37 3.4.2 OFDM-GDMA and OFDM-HDS-CDMA . . . . . . . . . . . . . . 38 3.4.3 Simulation Results . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Chapter 4 GDMA and HDS-CDMA Assisted Random Access Scheme 42 4.1 Brief Review of Random Access Communication . . . . . . . . . . . 42 4.2 Pure ALOHA and Slotted ALOHA . . . . . . . . . . . . . . . . . . 44 4.3 OFDM-GDMA-Q-ALOHA and OFDM-HDS-Q-ALOHA . . . . . . 45 4.4 Throughput Performances and Complexity Analysis of ALOHA Systems . . . . . . . . . 48 4.5 Slotted ALOHA with Retransmission Limit . . . . . . . . . . . . . . 68 4.6 Slotted ALOHA with Finite Buffer . . . . . . . . . . . . . . . . . . 84 Chapter 5 Conclusions and Future Works 86 References 88 | - |
| dc.language.iso | en | - |
| dc.title | 基於多重存取和多重資源的隨機存取通訊系統 | zh_TW |
| dc.title | Random Access Communications based on Multiple Access and Multiple Resources | en |
| dc.type | Thesis | - |
| dc.date.schoolyear | 112-2 | - |
| dc.description.degree | 碩士 | - |
| dc.contributor.coadvisor | 李世凱 | zh_TW |
| dc.contributor.coadvisor | Shih-Kai Lee | en |
| dc.contributor.oralexamcommittee | 呂忠津;趙啟超;蘇育德 | zh_TW |
| dc.contributor.oralexamcommittee | Chung-Chin Lu;Chi-Chao Chao;Yu T. Su | en |
| dc.subject.keyword | 分增益多重接取,低密度簽記,高密度簽記,隨機存取, | zh_TW |
| dc.subject.keyword | GDMA,LDS-CDMA,HDS-CDMA,ALOHA system,Random access, | en |
| dc.relation.page | 90 | - |
| dc.identifier.doi | 10.6342/NTU202402757 | - |
| dc.rights.note | 未授權 | - |
| dc.date.accepted | 2024-08-07 | - |
| dc.contributor.author-college | 電機資訊學院 | - |
| dc.contributor.author-dept | 電信工程學研究所 | - |
| 顯示於系所單位： | 電信工程學研究所 | |
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