Title :
Performance of OFDM/TDM with MMSE-FDE Using Pilot-Assisted Channel Estimation
Author :
Gacanin, Haris ; Adachi, Fumiyuki
Author_Institution :
Dept. of Electr. & Commun. Eng., Tohoku Univ.
Abstract :
We present, in this paper, pilot-assisted channel estimation (CE) for orthogonal frequency division multiplexing combined with time division multiplexing (OFDM/TDM) using minimum mean square error frequency-domain equalization (MMSE-FDE) over a nonlinear and frequency-selective fading channel. Joint use of time-domain filtering to increase the signal-to-noise ratio (SNR) of pilot signal and frequency-domain interpolation for OFDM/TDM is presented. The simulation results show that OFDM/TDM with proposed pilot-assisted CE provides a better performance than OFDM since the peak-to-average power ratio (PAPR) problem can be reduced.
Keywords :
OFDM modulation; channel estimation; fading channels; least mean squares methods; time division multiplexing; MMSE-FDE; OFDM/TDM; frequency-selective fading channel; minimum mean square error frequency-domain equalization; orthogonal frequency division multiplexing; pilot-assisted channel estimation; time division multiplexing; time-domain filtering; Channel estimation; Filtering; Frequency-selective fading channels; Interpolation; Mean square error methods; OFDM; Peak to average power ratio; Signal to noise ratio; Time division multiplexing; Time domain analysis;
Conference_Titel :
Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE
Conference_Location :
Kowloon
Print_ISBN :
1-4244-0658-7
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2007.47
