Title :
Compressed sensing based channel estimation for uplink OFDMA systems
Author :
Hayashi, Kazunori ; Sakai, Masanori ; Kamenosono, Takuya ; Kaneko, Megumi
Author_Institution :
Grad. Sch. of Inf., Kyoto Univ., Kyoto, Japan
Abstract :
The paper considers a time domain channel estimation approach for uplink OFDMA (Orthogonal Frequency Division Multiple Access) systems. Although frequency domain channel estimation schemes are widely used for those systems, we propose time domain channel estimation schemes by taking advantage of the sparsity of channel impulse response with compressed sensing. Numerical simulations show the merit of the proposed schemes, which demonstrates the validity of the time domain channel estimation approach for OFDMA systems.
Keywords :
OFDM modulation; channel estimation; compressed sensing; frequency division multiple access; frequency-domain analysis; time-domain analysis; transient response; channel impulse response sparsity; compressed sensing; frequency domain channel estimation scheme; orthogonal frequency division multiple access system; time domain channel estimation approach; uplink OFDMA system; Bit error rate; Channel estimation; Compressed sensing; Estimation; Resource management; Time-domain analysis; Vectors;
Conference_Titel :
Asia-Pacific Signal and Information Processing Association, 2014 Annual Summit and Conference (APSIPA)
Conference_Location :
Siem Reap
DOI :
10.1109/APSIPA.2014.7041569
