Browse > Article

Analysis of CDMA System Performance Using Weighted Value of Array Antenna  

Lee Kwan-Houng (Division of electronics & information engineering, Cheongju university)
Publication Information
Journal of information and communication convergence engineering / v.3, no.2, 2005 , pp. 67-71 More about this Journal
Abstract
Interference occurs by signals received from directions that were different from the signals of the users in a mobile communication system. Various studies have been undertaken, including diversity, equalizer, etc., in order to reduce interference. In this study, the weighted value of the array antenna was obtained to improve signal-to-noise ratio. The weighted value was obtained as an eigen value and an eigen vector by using the correlation coefficient of the signal. The weighted value obtained was then applied to the CDMA system to increase system performance and capacity. Both QPSK and OQPSK modulation systems were applied to analyze performance.
Keywords
Array antenna; Weighted value; eigen value; eigen vector; CDMA;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Alexiou, A, Haardt, M, 'Smart antenna technologies for future wireless systems: trends and challenges,' IEEE, Magazine Com. Volume 42, pp. 90-97, Sept. 2004
2 EDMOND NICOLAU. Adaptive Arrays ELSEVIER, pp. 12-25, 1989
3 Warren L. Stutzman & Gary A. Thiele .Antenna Theory and Design. John, Wiley,pp. 108-168, 1981
4 Alime Ozyildrnm and Yalcm Tank, 'Antenna Systems,' IEEE, Proceedings. 1999
5 John G. Proakis. Digital Communications, McGraw-Hill, pp. 702-792,1989
6 Shiann-Jeng Yu and Ju_Hong Lee, 'Adaptive Array Beamforming Based on an Efficient Techniqu e,' IEEE Trans on Antenna&Propagation. Vol. 44 , No.8, Aug. 1996
7 Torlak, M., Guanghan Xu, 'Performance of CDMA smartantennasystems,' Signals, Systems and Computers, 1995.Conference Vol. 1, pp. 383-387, Oct.-2Nov, 1995   DOI
8 B. Widrow, P.E. Mantey, L.J.Griffiths, B.B.Goode, 'Adaptive Antenna Systems,' IEEE Proceeding, Vol. 55, no. 12, Dex, pp. 2143-2159,1967   DOI   ScienceOn
9 C.B.Dietrich, Jrand W.L.Stuzman,'Smart antennas enchance cellular/PCS performance : partll', Microwave & RF, pp. 164-168, May 1997
10 Song, Y.S, Kwon, R.M, Min, B.J, 'Computationally efficient smart antennas for CDMA wireless communications,' IEEE, V T, Trans, Vo 50, pp. 1613-1628, Nov. 2001   DOI   ScienceOn