Please use this identifier to cite or link to this item:
標題: WiMAX系統波束合成器及正交分頻多工存取技術之FPGA實現
FPGA Implementation of Beamforming and OFDMA for WiMAX System
作者: 楊政諺
Yang, Cheng-Yen
關鍵字: Smart Antenna;智慧型天線;DSP;MIMO;數位訊號處理器;多輸入多輸出
出版社: 電機工程學系所
引用: [1] IEEE Std 802.16e-2005 and IEEE Std 802.16-2004/Cor1-2005, "IEEE Standardfor Local and Metropolitan Area Networks-Part 16: Air Interface for FixedBroadband Wireless Access Systems-Amendment 2: Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in LicensedBands and Corrigendum 1", New York, IEEE, Feb. 28, 2006. [2] IEEE Std 802.16-2004, "IEEE Standard for Local and Metropolitan Area Networks-Part 16: Air Interface for Fixed Broadband Wireless Access Systems", New York, IEEE, June, 2004. [3] Samir Palnitkar, "Verilog HDL", Prentice Hall ,2003. [4] Xilinx Web URL: [5] John G. Proakis, "Contemporary Communication Systems Using MATLAB", Brooks/Cole. [6] Koffman and Roman, "Broadband Wireless Access Solutions Based on OFDMAccess in IEEE 802.16", IEEE communications Magazine, April 2002. [7] Y.C. Chen, "A Double-Rate Pipelined Fast Fourier Transform Architecture forOFDM Systems", NCHU, Master Thesis, 2004. [8] R.L Jheng, "Comparison and FPGA Implementation of Signal/Double Rate Pipelined FFT/IFFT Architecture", NCHU, Master Thesis, 2005. [9] N.Weste, D. J. Skellern, "VLSI for OFDM", IEEE Communications Magazine, vol. 36. no. 10. pp. 127-131.Oct. 1998. [10] K.L Chen, "FFT Processor Design for OFDM Systems", NCTU, Master Thesis, 2004. [11] Y.Y Chen, "FPGA Realization of A MIMO-OFDM System with Optimized Hardware Resource Utilization", NCTU, Master Thesis, 2006 [12] Nicoli, M, Sala, M, Simeone, O, Sampietro, L, and Santacesaria, C, "Adaptive Array Processing for Time-Varying Interference Mitigation in IEEE 802.16 Systems", IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, pp. 1-5. Sept, 2006. [13] Porter, Jeffrey W.; Kepler, James F.; Krauss, Thomas P.; Vook, Frederick W.; Blankenship, T. Keith; Desai, Vip; Schooler, Anthony, "An Experimental Adaptive Beamforming System for the IEEE 802.16e-2005 OFDMA Downlink", Radio and Wireless Symposium, IEEE , pp. 475-478. 9-11 Jan, 2007. [14] Mahmoud, H.A.; Arslan, H.; Ozdemir, M.K, "Initial Ranging for WiMAX (802.16e) OFDMA", Military Communications Conference, pp. 1-7, 2006. [15] Paul Graham, Brent Nelson, "FPGA-based sonar processing", International Symposium on Field Programmable Gate Arrays, pp. 201-208, 1998. [16] Piggin, P., "Emerging mobile WiMax antenna technologies", Communications Engineer, pp. 29-33, October-November, 2006. [17] Dr. Sassan Ahmadi, "Introduction to mobileWiMAX Radio Access Technology PHY and MAC Architecture", Intel Corporation, December 7, 2006. [18] Kun-Chien Hung; Lin, D.W., "Joint Detection of Integral Carrier Frequency Offset and Preamble Index in OFDMA WiMAX Downlink Synchronization", Wireless Communications and Networking Conference, pp.1959-1964, 2007. [19] Svedman, P.; Wilson, S. K.; Cimini, L. J.; Ottersten, B., "Opportunistic Beamforming and Scheduling for OFDMA Systems", Communications, IEEE Transactions, pp. 941-952, May, 2007. [20] Tom Hill, "Researching FPGA Implementations of Baseband MIMO Algorithms using AccelDSP", DSP Tools Marketing, Xilinx, Inc., April 24, 2007.
WiMAX可允許採用智慧型天線(Smart Antenna)的技術,而所謂的智慧型天線的「智慧」便是來自於天線內含一組數位訊號處理器(Digital Signal Processor;DSP)。以陣列天線為例,便是將數個天線陣列排列,同時接收數個不同方向的訊號,並經由DSP計算每個訊號的角度,進而找出在某個角度時最遠的通訊距離,此技術也提高了WiMAX的涵蓋率。而智慧型天線由於有數個天線接收及發送訊號,也附帶提高了非使用者攫取非法訊號的難度,進而提高了傳輸的安全性。以OFDM技術為基礎的WiMAX,其實是行動寬頻數據服務中最好的技術.尤其是當WiMAX再加入多輸入多輸出(MIMO)智慧型天線技術之後,更能讓WiMAX技術發揮到極致。同時,智慧型天線可以讓WiMAX系統克服建築物穿透10dB以上的損失,使得行動裝置不再受到建築物障礙的局限。

WiMAX can utilize the smart antenna technology, which uses the digital signal processor (DSP) to process signals received from the antenna arrays. The smart antennas employ several aerial arrays, receiving the signals from several different directions at the same time. The smart antennas also calculate the angle of each signal which transmitted through the DSP, and then find out the farthest communication distance in a certain angle. This technology extends the coverage of WiMAX system. Smart antenna technology uses antenna arrays to transmit and receive signals, preventing the unauthorized users to acquire the information. The WiMAX system which based on the OFDM technology is the best technology for wideband transmission. If MIMO smart antennas are equipped in the WiMAX system, WiMAX system could achieve much better performance.
其他識別: U0005-1407200816132200
Appears in Collections:電機工程學系所

Show full item record

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.