在本論文中，我們提出一種使用空時區塊編碼 (STBC) 之基於離散哈特利轉換 (discrete Hartley transform；DHT) 的濾波器組多載波 (FBMC) 系統，以取代現有使用STBC之基於離散傅立葉轉換 (discrete Fourier transform；DFT) 的FBMC系統；空時區塊編碼是一種廣泛運用於近代無線通訊系統的傳送分集技術，透過此種技術我們可以利用多根天線傳送資料，以改善位元錯誤率。在使用STBC的DHT-FBMC系統中，兩個鏡像對稱子載波之間具有特殊的通道分集特性，因此我們可以對其進行聯合資料偵測以獲得分集增益；在接收端，結合STBC偵測和基於最小均方誤差準則之full-tap per-two-tone等化器 (而不是傳統的single-tap per-tone等化器) 被用來偵測所要的訊號。電腦模擬結果顯示，我們所提出之使用STBC的DHT-FBMC系統比現有使用STBC的DFT-FBMC系統具有較佳的位元錯誤率效能。

In this thesis, we investigate an alternative filter bank multicarrier (FBMC) system based on the discrete Hartley transform (DHT) using space-time block coding (STBC), instead of the existing discrete Fourier transform (DFT) using STBC. STBC is a widely adopted transmit diversity technique in modern wireless communication systems, where multiple antennas are used for data transmission to improve the bit-error-rate (BER) performance. In this DHT-FBMC system using STBC, there is distinct channel diversity between two mirror-symmetrical subcarriers, so that we can perform joint data detection on both subcarriers to exploit the diversity gain. At the receiver, a full-tap per-two-tone equalizer (rather than the conventional single-tap per-tone equalizer) combined with STBC detection based on the minimum mean-squared error criterion is used to detect the desired signal. Computer simulation results show that the DHT-FBMC system using STBC achieves better BER performance than the existing DFT-FBMC system using STBC.

Abstract i
Contents ii
List of Figures iii
List of Tables iv
I.Introduction................................................. 1
II.System Model.................................................4
A.DHT-FBMC/QAM Using Two Prototype Filters......................4
B.DHT-FBMC/QAM Using Two Prototype Filters and STBC.............9
III.Data Detection of the DHT-FBMC/QAM System Using STBC........12
IV.Simulation Results...........................................17
V.Conclusion....................................................21
References......................................................22

[1]R. van Nee and R. Prasad, OFDM for Wireless Multimedia Communications. Norwood, MA: Artech House, 2000.
[2]P. Siohan, C. Siclet, and N. Lacaille, “Analysis and design of OFDM/OQAM systems based on filterbank theory,” IEEE Trans. Signal Process., vol. 50, no. 5, pp. 1170–1183, May 2002.
[3]A. Viholaninen, M. Bellanger, and M. Huchard, “PHYDYAS–Physical layer for dynamic access and cognitive radio,” Tech. Rep. D5.1, EU FP7-ICT Future Networks, Jan. 2009. Project website: http//www.ict-phydyas.org/.
[4]B. F. Boroujeny, “OFDM versus filter bank multicarrier,” IEEE Signal Process. Mag., vol. 28, no. 3, pp. 92–112, May. 2011.
[5]L. Zhang, P. Xiao, A. Zafar, A. Quddus, and R. Tafazolli, “FBMC system: An insight into doubly dispersive channel impact,” Trans. Veh. Technol., vol. 66, no. 5, pp. 3942–3956, May 2017.
[6]P. Siohan and C. Roche, “Cosine-modulated filterbanks based on extended Gaussian functions,” IEEE Trans. Signal Process., vol. 48, no. 11, pp. 3052–3061, Nov. 2000.
[7]J. Du and S. Signell, “Time frequency localization of pulse shaping filters in OFDM/OQAM systems,” in Proc. Int. Conf. Inf., Commun. Signal Process., Singapore, Dec. 2007.
[8]D. Dasalukunte, S. Mehmood, and V. Öwall, “Complexity analysis of IOTA filter architectures in faster-than-Nyquist multicarrier systems,” in Proc. IEEE Global Commun. Conf. (GLOBECOM), Houston, Texas, USA, Dec. 2011.
[9]R. Zakaria and D. Le Ruyet, “A novel filter-bank multicarrier scheme to mitigate the intrinsic interference: Application to MIMO systems,” IEEE Trans. Wireless Commun., vol. 11, no. 3, pp. 1112–1123, Mar. 2012.
[10]P. Chevalier, D. Le Ruyet, and R. Chauvat, “Maximum likelihood Alamouti receiver for filter bank based multicarrier transmissions,” in Proc. 20th Int. ITG Workshop Smart Antennas, Munich, Germany, Mar. 2016, pp. 210–216.
[11]X. Mestre and D. Gregoratti, “Parallelized structures for MIMO FBMC under strong channel frequency selectivity,” IEEE Trans. Signal Process., vol. 64, no. 5, pp. 1200–1215, Mar. 2016.
[12]F. Rottenberg, X. Mestre, F. Horlin, and J. Louveaux, “Single-tap precoders and decoders for multiuser MIMO FBMC-OQAM under strong channel frequency selectivity,” IEEE Trans. Signal Process., vol. 65, no. 3, pp. 587–600, Feb. 2017.
[13]H. Nam, M. Choi, C. Kim, D. Hong, and S. Choi, “A new filter-bank multicarrier system for QAM signal transmission and reception,” in Proc. IEEE Int. Conf. Commun. (ICC), Sydney, Australia, Jun. 2014, pp. 5227–5232.
[14]Y. H. Yun, C. Kim, K. Kim, Z. Ho, B. Lee, and J.-Y. Seol, “A new waveform enabling enhanced QAM-FBMC systems,” in Proc. IEEE Int. Workshop Signal Process. Adv. Wireless Commun. (SPAWC), Stockholm, Sweden, Jun. 2015, pp. 116–120.
[15]Z. Ho, K. Kim, C. Kim, Y. H. Yun, Y. H. Cho, and J. Y. Seol, “A QAM-FBMC space-time block code system with linear equalizers,” in Proc. IEEE Globecom Workshops, San Diego, USA, Dec. 2015, pp. 1–5.
[16]H. Nam, M. Choi, S. Han, C. Kim, S. Choi, and D. Hong, “A new filter-bank multicarrier system with two prototype filters for QAM symbols transmission and reception,” IEEE Trans. Wireless Commun., vol. 15, no. 9, pp. 5998–6009, Sep. 2016.
[17]C. Kim, Y. H. Yun, K. Kim, and J. Y. Seol, “Introduction to QAM-FBMC: From waveform optimization to system design,” IEEE Commun. Mag., vol. 54, no. 11, pp. 66–73, Nov. 2016.
[18]D. Sim and C. Lee, “A MIMO receiver with two-dimensional ordering for maximum likelihood detection in FBMC-QAM,” IEEE Trans. Commun. Lett., vol. 21, no. 7, pp. 1465–1468, Jul. 2017.
[19]H. -S. Pan, “A filter bank multicarrier system based on the discrete Hartley transform and two prototype filters,” M.S. thesis, Inst. Commun. Eng., National Tsing Hua Univ., Hsinchu, Taiwan, Dec. 2017.
[20]C.-L. Wang, H.-S. Pan, and C.-T. Tuan, “Filter bank multicarrier transmission based on the discrete Hartley transform,” in Proc. IEEE Wireless Commun. Netw. Conf. (WCNC), Seoul, South Korea, Apr. 2020.
[21]R. N. Bracewell, “Discrete Hartley transform,” J. Opt. Soc. Amer., vol. 73, no. 12, pp. 1832–1835, Dec. 1983.
[22]J. Mao, C.-L. Wang, L. Zhang, C. He, P. Xiao, and K. Nikitopoulos, “A DHT-based multicarrier modulation system with pairwise ML detection,” in Proc. IEEE Int. Symp. Pers., Indoor Mobile, Radio Commun. (PIMRC), Montreal, Canada, Oct. 2017.
[23]S. M. Alamouti, “A simple transmitter diversity scheme for wireless communications,” IEEE J. Sel. Areas Commun., vol. 16, pp. 1451–1458, Oct. 1998.
[24]C.-H. Wang, “Data detection for a DHT-based MIMO filter bank multicarrier system,” M.S. thesis, Inst. Commun. Eng., National Tsing Hua Univ., Hsinchu, Taiwan, Aug. 2018.
[25]S. Sesia, I. Toufik, and M. Baker, LTE-The UMTS Long Term Evolution: From Theory to Practice, 2nd ed. UK: John Wiley & Sons, 2011.
[26]K.-C. Yang, “Time and frequency synchronization for a DHT-based filter bank multicarrier system,” M.S. thesis, Inst. Commun. Eng., National Tsing Hua Univ., Hsinchu, Taiwan, Aug. 2018.