Title :
Constant-modulus Preamble Design for MIMO-OFDM Systems
Author :
Zhu, Qingyu ; Liu, Zhiqiang
Author_Institution :
Dept. of ECE, Iowa Univ., Iowa City, IA
Abstract :
A new preamble design for MIMO-OFDM is proposed in this paper. Based on the Chu sequence, the proposed preamble can be used to achieve frequency offset estimation, fine time offset estimation, and optimal least-squares channel estimation. In addition, since the preamble has constant modulus, it has low peak-to-average power ratio. Furthermore, channel estimation can be done through simple phase and magnitude justification, and enjoys low computational complexity
Keywords :
MIMO systems; OFDM modulation; channel estimation; computational complexity; frequency estimation; least squares approximations; Chu sequence; MIMO-OFDM systems; computational complexity; constant-modulus preamble design; fine time offset estimation; frequency offset estimation; optimal least-squares channel estimation; peak-to-average power ratio; AWGN; Bandwidth; Channel estimation; Cities and towns; Computational complexity; Frequency estimation; MIMO; Peak to average power ratio; Receiving antennas; Transmitting antennas;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1661051
