Title :
Optimum pilot pattern for channel estimation in OFDM systems
Author :
Choi, Ji-Woong ; Lee, Yong-Hwan
Author_Institution :
Sch. of Electr. Eng. & INMC, Seoul Nat. Univ., South Korea
Abstract :
The performance of channel estimation in orthogonal frequency division multiplexing (OFDM) systems significantly depends on the pilot signal, which is usually scattered in time and frequency domains. For a given pilot density, the authors optimally design the pilot pattern so as to minimize the mean squared error (MSE) of the channel estimate with the use of a general interpolator. The analytic results are verified by computer simulation.
Keywords :
OFDM modulation; channel estimation; mean square error methods; time-frequency analysis; MSE; OFDM systems; channel estimation; mean squared error; orthogonal frequency division multiplexing; time-frequency domains; Channel capacity; Channel estimation; Computer errors; Computer simulation; Delay; Fading; Frequency domain analysis; Interpolation; OFDM; Scattering; Channel estimation; orthogonal frequency division multiplexing (OFDM) system; pilot pattern;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2005.853891
