DocumentCode :
3177799
Title :
A Frequency-Domain Correlation Matrix Estimation Algorithm for MIMO-OFDM Channel Estimation
Author :
Wan, Feng ; Zhu, Wei-Ping ; Swamy, M.N.S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, QC
fYear :
2008
fDate :
21-24 Sept. 2008
Firstpage :
1
Lastpage :
5
Abstract :
The second-order statistics of a time-domain signal are very often used in blind and semi-blind channel estimation. Considering that the received signal in MIMO-OFDM systems might be corrupted in the time-domain due to some adverse factors such as frequency offset and large peak-to-average power ratio (PAPR), an IFFT processor is required in the receiver to achieve a good-quality time-domain signal. This additional IFFT incurs extra computational complexity and probably a long time delay as well in real-time communication systems. In this paper, we propose a new algorithm for the computation of the time-domain correlation matrix directly from the received frequency- domain signal. The proposed frequency-domain correlation matrix estimation method is then used to develop a new semi-blind MIMO-OFDM channel estimation approach. A number of computer simulation based experiments are conducted, confirming the effectiveness of the proposed method.
Keywords :
MIMO communication; OFDM modulation; channel estimation; frequency-domain analysis; mobile radio; frequency-domain correlation matrix estimation algorithm; peak-to-average power ratio; semiblind MIMO-OFDM channel estimation; Channel estimation; Computational complexity; Computer simulation; Delay effects; Frequency estimation; Peak to average power ratio; Real time systems; Signal processing; Statistics; Time domain analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 2008. VTC 2008-Fall. IEEE 68th
Conference_Location :
Calgary, BC
ISSN :
1090-3038
Print_ISBN :
978-1-4244-1721-6
Electronic_ISBN :
1090-3038
Type :
conf
DOI :
10.1109/VETECF.2008.72
Filename :
4656904
Link To Document :
بازگشت