Title :
Iterative channel estimation for MIMO OFDM systems
Author :
Chen, Jiming ; Li, Shaoqian
Author_Institution :
Nat. Key Lab. of Commun., Univ. of Electron. & Sci. Technol., China
Abstract :
Multiple input multiple output (MIMO) can be used in orthogonal frequency division multiplexing (OFDM) systems to improve communication quality and capacity of a wireless communication system. In this paper, we present a novel iterative channel estimation algorithm based on time-domain filtering. Compared with the conventional channel estimation techniques, the iterative channel estimation algorithm based on time-domain filtering can employ a low-pass filter in the time domain in each iteration so that the multiple antenna subchannel interference (MASCI) and additive white Gaussian noise (AWGN) are significantly reduced. The simulation results show the techniques can improve the channel estimation accuracy effectively.
Keywords :
AWGN channels; MIMO systems; OFDM modulation; channel estimation; interference suppression; iterative methods; low-pass filters; time-domain analysis; AWGN; MASCI; MIMO OFDM systems; additive white Gaussian noise; channel estimation accuracy; iterative channel estimation; low-pass filter; multiple antenna subchannel interference; multiple input multiple output systems; orthogonal frequency division multiplexing; time-domain filtering; AWGN; Channel estimation; Filtering algorithms; Interference; Iterative algorithms; Low pass filters; MIMO; OFDM; Time domain analysis; Wireless communication;
Conference_Titel :
Communications, Circuits and Systems, 2005. Proceedings. 2005 International Conference on
Print_ISBN :
0-7803-9015-6
DOI :
10.1109/ICCCAS.2005.1493388
