상세정보
학술대회
Improved Blind Channel Estimation for OFDM Systems
- 발행일
- 200801
- 출처
- International Conference on Consumer Electronics (ICCE) 2008, pp.1-2
- 협약과제
- 07MM1300, 4세대 이동통신용 적응 무선접속 및 전송 기술개발, 김진업
- 초록
- In this paper, we propose an improved blind channel estimation scheme for single-input single- output (SISO) orthogonal frequency-division multiplexing (OFDM) systems. In the proposed scheme, a modified cross-correlation matrix is obtained by dividing, element-wise, the cross-correlation matrix by the precoding matrix and then the channel vector is estimated by applying the principal eigenvector method to the modified cross-correlation matrix. The principal eigenvector is obtained by the power method with low complexity instead of the complicated eigenvalue decomposition. Simulation results show that the channel estimation and bit error rate (BER) performance of the proposed scheme is superior to that of the conventional precoding-assisted blind channel estimation scheme. ©2008 IEEE.
- KSP 제안 키워드
- Bit Error Rate(And BER), Blind channel estimation, Channel estimation(CE), Channel vector, Cross-correlation matrix(CCM), Eigenvector method, OFDM systems, Power Method, Single-input, eigenvalue decomposition, low-complexity