On the Performance CDMA System Using Weighted Value

Kwan Hyeong, Lee; Kim， Hack-Yoon; Woo-Young Song

Journal of The Korea Society of Computer and Information

Abbr : JKSCI
2006, 11(3), pp.213-220
Publisher : The Korean Society Of Computer And Information
Research Area : Computer Science

Kwan Hyeong, Lee ¹, Kim， Hack-Yoon ², Woo-Young Song ³

¹대진대학교
²청주대학교
³청주대학교

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

CDMA, Diversity, weighted-valued, Modulation
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KCI Citation (4)

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