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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 蘇柏青 | |
dc.contributor.author | Cai Jia | en |
dc.contributor.author | 賈才 | zh_TW |
dc.date.accessioned | 2021-05-11T05:00:06Z | - |
dc.date.available | 2019-08-07 | |
dc.date.available | 2021-05-11T05:00:06Z | - |
dc.date.copyright | 2019-08-07 | |
dc.date.issued | 2019 | |
dc.date.submitted | 2019-07-31 | |
dc.identifier.citation | [1] N. Michailow, M. Matthé, I.S. Gaspar, A.N. Caldevilla, L.L. Mendes, A. Festag, and G. Fettweis. Generalized frequency division multiplexing for 5th generation cellular networks. IEEE Transactions on Communications, 62(9):3045–3061, Sept 2014.
[2] D. Zhang, L. L. Mendes, M. Matthé, I. S. Gaspar, N. Michailow, and G. P. Fettweis. Expectation propagation for near-optimum detection of mimo-gfdm signals. IEEE Transactions on Wireless Communications, 15(2):1045–1062, Feb 2016. [3] P. C. Chen, B. Su, and Y. Huang. Matrix characterization for gfdm: Low complexity mmse receivers and optimal filters. IEEE Transactions on Signal Processing, 65(18):4940–4955, Sept 2017. [4] U. Vilaipornsawai and M. Jia. Scattered-pilot channel estimation for GFDM. In 2014 IEEE Wireless Commun. and Networking Conf. (WCNC), pages 1053–1058, April 2014. [5] M. Danneberg, N. Michailow, I. Gaspar, M. Matthé, Dan Zhang, L. L. Mendes, and G. Fettweis. Implementation of a 2 by 2 MIMO-GFDM transceiver for robust 5G networks. In 2015 Int. Symposium on Wireless Communication Systems (ISWCS), pages 236–240, Aug 2015. [6] J. Zhang, Y. Li, and K. Niu. Iterative channel estimation algorithm based on compressive sensing for GFDM. In 2016 IEEE International Conference on Network Infrastructure and Digital Content (IC-NIDC), pages 244–248, Sept 2016. [7] Shahab Ehsanfar, Maximilian Matthé, Marwa Chafii, and Gerhard Fettweis. Pilot and cp-aided channel estimation in mimo non-orthogonal multi-carriers. IEEE Transactions on Wireless Communications, PP:1–1, 12 2018. [8] S. Ehsanfar, M. Matthé, D. Zhang, and G. Fettweis. A Study of Pilot-Aided Channel Estimation in MIMO-GFDM Systems. In WSA 2016; 20th Int. ITG Workshop on Smart Antennas, pages 1–8, March 2016. [9] S. Ehsanfar, M. Matthe, D. Zhang, and G. Fettweis. Theoretical Analysis and CRLB Evaluation for Pilot-Aided Channel Estimation in GFDM. In 2016 IEEE Global Communications Conference (GLOBECOM), pages 1–7, Dec 2016. [10] Y. Akai, Y. Enjoji, Y. Sanada, R. Kimura, H. Matsuda, N. Kusashima, and R. Sawai. Channel estimation with scattered pilots in GFDM with multiple subcarrier bandwidths. In 2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), pages 1–5, Oct 2017. [11] S. Ehsanfar, M. Matthe, D. Zhang, and G. Fettweis. Interference-Free Pilots Insertion for MIMO-GFDM Channel Estimation. In 2017 IEEE Wireless Communications and Networking Conference (WCNC), pages 1–6, March 2017. [12] Marc Moonen. Block transmission techniques for wireless communications block transmission techniques for wireless communications. 2004. [13] A. Hjorungnes and D. Gesbert. Complex-valued matrix differentiation: Techniques and key results. IEEE Transactions on Signal Processing, 55(6):27402746, June 2007. [14] Yuan-Pei Lin, See-May Phoong, and P. P. Vaidyanathan. Filter Bank Transceivers for OFDM and DMT Systems. Cambridge University Press, New York, NY, USA, 2010. [15] S. Ehsanfar, M. Matthe, D. Zhang, and G. Fettweis. Interference-free pilots insertion for mimo-gfdm channel estimation. In 2017 IEEE Wireless Communications and Networking Conference (WCNC), pages 1–6, March 2017. [16] M. Matthé, N. Michailow, I. Gaspar, and G. Fettweis. Influence of pulse shaping on bit error rate performance and out of band radiation of Generalized Frequency Division Multiplexing. In Proc. IEEE ICC Workshop, pages 43–48, 2014. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/handle/123456789/721 | - |
dc.description.abstract | 廣義分頻多工是次世代無線通訊系統頗具前途的波型候選人之一。然而,如何實踐廣義分頻多工的通道估測始終是一大挑戰,因其系統本身載波間通常為非正交而存在干擾。本論文首先提出一個基於預編碼器的領航符號插入架構,適用於廣泛的調變矩陣,包括了廣義分頻多工矩陣,並且針對預編碼器推導出了在接收端對應之最小均方誤差估計器。基於此架構我們進一步提出了一個可在接收端消除估測干擾之預編碼器,其透過了讓傳送訊號在頻域上的若干頻率點形成固定領航符號,進而消除若干頻率點上因資料符號之隨機性而產生的變動。模擬結果顯示我們提出的預編碼器相較於傳統的領航符號散佈方法,降低了通道估測的均方誤差與訊雜較高時的符號錯誤率 | zh_TW |
dc.description.abstract | Generalized frequency division multiplexing (GFDM) is a promising candidate waveform for next-generation wireless communication systems. However, channel estimation is still challenging for GFDM due to its inherent interference. In this paper, we formulate a pilot-insertion framework based on a precoder design for block-based systems including GFDM and derive its linear minimum mean square error (LMMSE) channel estimator. We propose a solution for the precoder to achieve interference precancellation by generating the pilots at several tramsmit frequency bins and eliminating the randomness at such frequency bins due to data symbols. Numerical results demonstrate that the proposed method reduces the channel estimation mean square error and high signal-to-noise ratio (SNR) symbol error rate (SER), compared to conventional pilots scattering methods. | en |
dc.description.provenance | Made available in DSpace on 2021-05-11T05:00:06Z (GMT). No. of bitstreams: 1 ntu-108-R05942105-1.pdf: 824831 bytes, checksum: 7edf20e34970bd74b150a68fc9101398 (MD5) Previous issue date: 2019 | en |
dc.description.tableofcontents | 誌謝 ii
摘要 iii Abstract iv 1 Introduction 1 2 System Model for GFDM Channel Estimation 5 2.1 GFDM System Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1.1 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1.2 Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 OFDM Channel Estimation . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 Proposed Methods 9 3.1 The Problem of Channel Estimation in GFDM . . . . . . . . . . . . . . . 9 3.2 Pilot-insertion Framework . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.2.1 Precoder Design . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.2.2 LMMSE Channel Estimation . . . . . . . . . . . . . . . . . . . . 13 3.3 Interference-canceled Pilot Insertion Precoder . . . . . . . . . . . . . . . 15 3.3.1 Pilot-stone Condition . . . . . . . . . . . . . . . . . . . . . . . . 15 3.3.2 Proposed Procedure for The Precoder Design . . . . . . . . . . . 15 3.4 Index Choice for GFDM . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.4.1 Pilot-stones Indexes . . . . . . . . . . . . . . . . . . . . . . . . 18 3.4.2 Pilot-holes and Data-holes Indexes . . . . . . . . . . . . . . . . . 18 3.5 IFPI-GFDM Channel Estimation . . . . . . . . . . . . . . . . . . . . . . 20 3.5.1 The Frequency-Domain Implementation for GFDM . . . . . . . . 20 3.5.2 The Modulation Matrix for IFPI-GFDM . . . . . . . . . . . . . . 21 3.5.3 The Proposed Pilot-insertion Precoder for IFPI-GFDM . . . . . . 22 4 Simulation Results 24 4.1 Parameter Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.1.1 Simulation Results . . . . . . . . . . . . . . . . . . . . . . . . . 25 5 Conclusion 28 Bibliography 30 A Power Spectral Density 33 A.1 For Original GFDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 A.2 For General GFDM Precoder “A” . . . . . . . . . . . . . . . . . . . . . 36 | |
dc.language.iso | en | |
dc.title | 廣義分頻多工下的領導式通道估測 | zh_TW |
dc.title | Pilot-aided Channel Estimation Methods for Generalized Frequency Division Multiplexing Systems | en |
dc.date.schoolyear | 107-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 馮世邁,林澤 | |
dc.subject.keyword | 廣義分頻多工,領航符號插入,最小均方誤差估計器,符號錯誤率, | zh_TW |
dc.subject.keyword | Generalized frequency division multiplexing (GFDM),pilot-insertion,linear minimum mean square error (LMMSE) channel estimation,symbol error rate (SER), | en |
dc.relation.page | 41 | |
dc.identifier.doi | 10.6342/NTU201902242 | |
dc.rights.note | 同意授權(全球公開) | |
dc.date.accepted | 2019-08-01 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 電信工程學研究所 | zh_TW |
顯示於系所單位: | 電信工程學研究所 |
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