Title :
Nonstationary multiple-antenna interference cancellation for unsynchronized OFDM systems with distributed training
Author :
Kuzminskiy, Alexandr M. ; Abramovich, Yuri I.
Author_Institution :
Bell Labs., Alcatel-Lucent, Swindon
fDate :
March 31 2008-April 4 2008
Abstract :
Adaptive interference cancellation is addressed in an orthogonal frequency division multiplexing (OFDM) system with a frame containing a number of temporally distributed pilot symbols, e.g., as in the IEEE 802.16-2004 standard. A nonstationary symbol-by-symbol switching technique based on banks of training-based and semi-blind estimators is analyzed by means of comparison with the conventional stationary pilot-based solution and with the nonasymptotic maximum likelihood benchmark especially developed for assessment of the proposed nonstationary interference cancellation algorithms.
Keywords :
OFDM modulation; WiMax; interference suppression; maximum likelihood estimation; adaptive interference cancellation; distributed training; nonasymptotic maximum likelihood benchmark; nonstationary multiple-antenna interference cancellation; nonstationary symbol-by-symbol switching technique; orthogonal frequency division multiplexing system; pilot symbols; semiblind estimators; stationary pilot-based solution; training-based estimators; unsynchronized OFDM systems; Algorithm design and analysis; Base stations; Cellular networks; Interference cancellation; Maximum likelihood estimation; OFDM; Radiofrequency interference; Training data; WiMAX; Wireless communication; Semi-blind second-order filtering; WiMAX; maximum likelihood benchmark; symbol-bysymbol switching;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-1483-3
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2008.4518120
