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The Cost-effective Architecture Design of an Angle-of-Arrival Estimator in UWB Systems  

Lee, Seong-Joo (Dept. of Info. and Comm. Eng., Sejong University)
Han, Kwi-Beum (Dept. of Info. and Comm. Eng., Sejong University)
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Abstract
This paper proposes a cost-effective architecture design of an angle-of-arrival (AOA) estimator based on the multiple signal identification and classification (MUSIC) algerian in UWB systems adapting Multi-band OFDM (MB-OFDM) techniques with two-receive antennas. In the proposed method, by modifying the equations of algorithm in order to remove the high computational functions, the computation power can be significantly reduced without significant performance degradation. The proposed architecture is designed and verified by Verilog HDL, and implemented into 0.13um CMOS standard cell and Xilinx FPGA circuits for the estimation of hardware complexity and computation power. From the results of the implementations, we can find that the proposed circuits reduces the hardware complexity by about 43% and the estimated computation power by about 23%, respectively, compared to the architecture employing the original MUSIC algorithm.
Keywords
AOA; MUSIC; UWB; Low Power;
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1 Oh-Soon Shin, S. S. Ghazzemzadeh, L.J. Greenstein, V. Tarokh, 'Performance evaluation of MB-OFDM and DS-UWB systems for wireless personal area networks,' in Proc. of ICU2005, pp.6, Sept. 2005
2 S. Roy, J. R. Foerster, V. S. Sornayazulu, D.G. Leeper, 'Ultrawideband radio design: the promise of high-speed, short-range wireless connectivity,' Proceedings of IEEE, Vol.92, No.2, pp295-311, 2003   DOI   ScienceOn
3 Chin-Der Wann and Sheng-Hsiung Hsu, 'Estimation and analysis of Signal Arrival Time for UWB System,' in Proc. of VTC2004-fall, pp. 3560-3564 Sept. 2004
4 N. Iwakiri, T. Kobayashi, 'Joint TOA and AOA Estimation of UWB Signal Using Time Domain Smoothing,' in Proc. of ISWPC'07, Feb. 2007
5 Zhou Zou, Wang Hongyuan, Yu Guowen, 'An Improved MUSIC Algorithm Implemented with High-speed Parallel Optimization for FPGA,' in Proc. of ISAPE'06, pp. 1-4, Oct. 2006
6 Yong Up Lee, Yeoungjun Seo, Ginkyu Choi, 'Angle-of-Arrival Estimation for UWB Signals Clustered in Angle,' in Proc. of 1st International Symposium on Wireless Pervasive Computing, pp. 1-4, Jan. 2006
7 Richard Klukas, Michel Fattouche, 'Line-of-Sight Angle of Arrival Estimation in the Outdoor Multipath Environment,' IEEE Trans. on Vehicular Technology, Vol. 47, No. 1, Feb 1998
8 T. K. K. Tsang, M.N. El-Garnal, 'Ultra-wideband (UWB) communications systems: an overview,' In Proc. of IEEE-NEWCAS conference, pp.735 -740, Sept. 2005
9 Ali H. Sayed, Alireza Tarighat, and Nima Khajehnouri, 'Network-Based Wireless Location, Challenges faced in Developing Techniques for Accurate Wireless Location Information,' IEEE Signal Processing Magazine, July 2005