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標題: 適應性天線陣列用於多頻取樣多載波分碼多工多重使用者通訊系統
Multi-rate MC-CDMA Multiuser Communication Systems with Adaptive Antenna Array
作者: 柯坤達
Ke, Kun-Da
關鍵字: MC-CDMA;分碼多工多重接取;ICI;MAI;MUI;VPG;VCR;multi-code;LMS;後快速富立葉型式;前快速富立葉型式;符碼間的干擾;多重接取的干擾;多重使用者干擾;可變程序增益;可變碼速率;多重碼系統;最小平方差
出版社: 電機工程學系所
引用: BIBLIOGRAPHY [1] S.Roy and Honfbo Yan, "Blind channel estimation in multi-rate CDMA systems", IEEE Trans. on Commun., vol. 50, pp. 995-1004, June 2002. [2] Hongbo Yan and S.Roy, "Blind channel identification for multirate CDMA systems", IEEE International Conference on Acoustics, Speech, and Signal Processing, vol. 5, pp. 2509-2512, June 2000. [3] C.-L. I and R. D. Gitlin, "Multi-code CDMA wireless peresonal communications networks", in Proc. ICC, vol. 2, pp. 1060-1064, June 1995. [4] T. Ottosson and A. Svensson, "Multi-rate schemes in DS/CDMA systems', in Proc. IEEE Vehic. Tech. Conf., Chicago, vol. 2, pp. 1006-1010, July 1995. [5] R. A. Monzingo and W. T. Miller, "Introduction to Adaptive Arrays", Wiley, 1980. [6] R. T. Compton, Jr., "Adaptive Antennas: Concepts and Performance", Prentice Hall, 1988. [7] S. Haykin, "Adaptive Filter Theory", Prentice Hall, NJ, 2001. [8] B. D. V. Veen and K. M. Buckley, "Beamforming: A Versatile Approcach to Spatial Filtering", IEEE ASSP ag., pp. 4-24, Apr,1988. [9] D. H. Johnson and D. E. Dudgeon, "Array Signal Processing: Concepts and Techniques", Prentice Hall, 1993. [10] J. Litva and T. K-Y. Lo, "Digital Beamforming in Wireless Communications", Artech, 1996. [11] J. S. Thompson, P. M. Grant, and B. Mulgrew, "Smart Antenna Arrays for CDMA Systems', IEEE Pers. Commun., vol. 3, no. 5, pp. 16-25, Oct. 1996. [12] Young-Hwan You, Won-Gi Jeon, Jong-Ho Paik, Mi-Jeong Kim, Dong-Sun Kim, and Hyoung-Kyu Song, "Performance Evaluation of OFDM-CDMA with Multiple Antennas for Broadband Wireless Access Networks", IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 54, NO.1, pp. 385-90, JANUARY 2005. [13] F.-B. Ueng, J.-D. Chen and S.-H. Cheng, "Smart Antennas for Multiuser DS/CDMA Communications in Multipath Fading Channels", IEEE International Symposium on Spread Spectrum Techniques and Applications, pp. 400- 404, 30 Aug. -2 Sept. 2004. [14] M. Chryssomallis, "Smart antennas, "IEEE Antennas and Propagation Magazine", vol. 42, pp. 129-136, June 2000. [15] Chan Kyu KIM and Yong Soo CHO, " An Adaptive Beamforming Algorithm for MC-CDMA Systems with Antenna Array", IEICE TRANS. COMMUN., VOL.E83-B, NO.12, DECEMBER 2000. [16] Rohit Negi, Member, IEEE, and John M. Cioffi, Fellow, IEEE, "Blind OFDM Symbol Synchronization in ISI Channels", IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 50, NO. 9, SEPTEMBER 2002. [17] Chihiro FUJITA, Yoshitaka HARA, and Yukiyoshi KAMIO, Regular Members, "Multiuser Interference Suppression in Uplink Multicarrier CDMA System", IEICE TRANS, FUNDAMENTALS, VOL. E85-A, NO.10 OCTOBER 2002. [18] Sumit Roy, SeniorMember, IEEE, and Hongbo Yan, "Blind channel Estimation in Multi-Rate CDMA Systems", IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 50, NO. 6, JUNE 2002. [19] Thit Minn and Kai-Yeung Siu, "Variable chip rate CDMA", in Proc. IEEE Vehic. Tech. Conf. vol. 3, pp. 2267-2271, May 2000. [20] Shinsuke Hara, Montree Budsabathon, and Yoshitaka Hara, "A Pre-FFT OFDM Adaptive Antenna Array with Eigenvector Combining", IEEE Communications Society, pp. 2412-2416, 2004. [21] Alan V. Oppenheim, Ronald W. Schafer and John R. Buck, "Discrete-Time Signal Processing", Second Edition, pp 648.
此論文著眼在多頻取樣多載波分碼多工多重接取(MC-CDMA)適應性通訊系統的後快速富立葉型式(post-FFT type)和前快速富立葉型式(pre-FFT Type)。在多路徑的衰減通道中,被傳輸的訊號會被下列舉出的特性所影響:符碼間的干擾(ICI),多重接取的干擾(MAI)和多重使用者干擾(MUI)。為了解決這些問題,我們提出三種多頻取樣的數學方法-可變程序增益(VPG),可變碼速率(VCR)和多重碼系統(multi-code)去調查多載波分碼多工通訊處理在多路徑的衰減通道中的效能表現。我們使用基本最小平方差(LMS)方法和在接收架構增加展頻碼係數。這項技術可以減少雜訊和干擾;換言之,它可以增加效能和可靠性。

This paper proposes the adaptive multi-rate multi-carrier code-division multiple access (MC-CDMA) communication system with the post-FFT type and pre-FFT type. In multipath fading channel, the transmitted signal suffers from effects, which are characterized as follows: in inter-chip interference (ICI), multiple access interference (MAI) and multi-user interference (MUI). In order to solve these problems, we propose three multi-rate methodologies - variable processing gain (VPG), variable chip rate (VCR) and multi-code systems to investigate the performance of the MC-CDMA communications processing in multipath fading environments. We employ Least-Mean-Square (LMS)-based and include the spreading code coefficients in receiver structures. The technique can reduce noise and interference; moreover, it can enhance efficiency and reliability.
其他識別: U0005-0606200614040900
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