대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2002년도 ITC-CSCC -2
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- Pages.1354-1357
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- 2002
Performance Analysis of Suboptimal Receiver Combining Adaptive Array Antenna and Orthogonal Decision-Feedback Detector for DS/CDMA System
- Cho, Young-pil (Department of Electronics Engineering, Inha University) ;
- Yoo, Sung-Kyun (Department of Electronics Engineering, Inha University) ;
- Lee, Hyung-ki (Department of Electronics Engineering, Inha University) ;
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Kwak, Kyung-sup
(The Graduate School of Information Technology & Telecommunication, Inha University)
- 발행 : 2002.07.01
초록
In this paper, we propose a suboptimal receiver combining adaptive array antenna and orthogonal decision-feedback detector in DS/CDMA system. Adaptive array antenna can cancel out undesired signal using beamforming scheme. However, if there are interfering signals from undesired users with the same incident angle as that of a desired user, an adaptive array antenna cannot suppress them. The proposed receiver can cancel out remaining interference from users having nearly the same beam pattern. And we employ Orthogonal Decision-Feedback Detector (ODFD) as multiuser detection. The ODFD performs as good as the decorrelating decision -feedback detector (DDD) with much less complexity. Simulation results show that the proposed system provides a significantly enhanced performance.
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