TY - GEN
T1 - Performance bounds for channel tracking algorithms for MIMO systems
AU - Ehrenberg, Livnat
AU - Gannot, Sharon
AU - Leshem, Amir
AU - Zehavi, Ephraim
PY - 2008
Y1 - 2008
N2 - In this paper we derive performance bounds for tracking time-varying OFDM multiple-input multiple-output (MIMO) communication channel in the presence of additive white Gaussian noise (AWGN). We discuss two channel tracking schemes. The first tracks the filter coefficients directly in time-domain, while the second separately tracks each tone in the frequency-domain. The Kalman filter, with known channel statistics, is utilized for evaluating the performance bounds. It is shown that the time-domain tracking scheme, which exploits the sparseness of the channel impulse response, outperforms the computationally more efficient, frequency-domain tracking scheme, which does not exploit the smooth frequency response of the channel.
AB - In this paper we derive performance bounds for tracking time-varying OFDM multiple-input multiple-output (MIMO) communication channel in the presence of additive white Gaussian noise (AWGN). We discuss two channel tracking schemes. The first tracks the filter coefficients directly in time-domain, while the second separately tracks each tone in the frequency-domain. The Kalman filter, with known channel statistics, is utilized for evaluating the performance bounds. It is shown that the time-domain tracking scheme, which exploits the sparseness of the channel impulse response, outperforms the computationally more efficient, frequency-domain tracking scheme, which does not exploit the smooth frequency response of the channel.
KW - Communication system performance
KW - Kalman filtering
KW - MIMO systems
KW - Time-varying channels
KW - Tracking
UR - http://www.scopus.com/inward/record.url?scp=51449094670&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2008.4518302
DO - 10.1109/ICASSP.2008.4518302
M3 - ???researchoutput.researchoutputtypes.contributiontobookanthology.conference???
AN - SCOPUS:51449094670
SN - 1424414849
SN - 9781424414840
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 3085
EP - 3088
BT - 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP
T2 - 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP
Y2 - 31 March 2008 through 4 April 2008
ER -