کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
564541 | 875619 | 2009 | 12 صفحه PDF | دانلود رایگان |

Adaptive interference cancellation is addressed in an asynchronous 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. Non-stationary symbol-by-symbol switching technique is proposed that is based on banks of the second-order statistics semi-blind solutions with on-line algorithm selection using a higher-order statistics criterion. Three banks of algorithms are formulated and analyzed by means of comparison to the conventional stationary pilot-based solution and to the non-asymptotic maximum-likelihood benchmark especially developed for assessment of the proposed interference cancellation algorithms. Their efficiency is compared to the conventional stationary solutions by means of simulations in a WiMAX (worldwide interoperability for microwave access) environment.
Journal: Signal Processing - Volume 89, Issue 5, May 2009, Pages 753–764