S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Electrical and Computer Engineering (전기·정보공학부) Others_전기·정보공학부
Adaptive Spatial Decorrelator
- Min, Seunghyun; Lee, Kwang Bok; Lee, Yong-Hwan
- Issue Date
- 통신정보 합동학술 대회(JCCI), 2003년 4월
- In this paper, an adaptive spatial decorrelator is proposed in smart antenna systems. A spatial decorrelator was proposed in  which is similar to a multiuser receiver, decorrelators in DS/CDMA systems. However, the spatial decorrelator is sensitive to the DOA estimation error. Thus, an adaptive spatial decorrelator is proposed to compensate the DOA estimation error. It uses the equivariant adaptive separation via independence (EASI) algorithm  as an adaptation rule. It provides the robustness to the DOA estimation error. The proposed robust beamforming algorithm outperforms the conventional robust beamforming algorithm, such as, the linearly constrained minimum power (LCMP) with diagonal loading and covariance matrix tapering (CMT). And, it operates well even in the high signal-to-noise (SNR) regions.