Title :
Frequency-Domain Interleaving for OFDM/TDM Using MMSE-FDE
Author :
Gacanin, Haris ; Adachi, Fumiyuki
Author_Institution :
Dept. of Electr. & Commun. Eng., Tohoku Univ., Sendai
Abstract :
In this paper, frequency-domain interleaving on a frame-by-frame basis for orthogonal frequency division multiplexing combined with time division multiplexing (OFDM/TDM) using minimum mean square error frequency-domain equalization (MMSE-FDE) is presented. The OFDM/TDM frame signal (i.e., several concatenated OFDM signals) frequency components are interleaved to enhance channel frequency-selectivity and then, MMSE-FDE is applied at the receiver to obtain frequency diversity gain. The bit error rate (BER) performance of OFDM/TDM with and without channel coding is evaluated by computer simulation. It was shown, that frequency-domain interleaving on the frame-by-frame basis for OFDM/TDM using MMSE- FDE achieves a better BER performance in comparison with conventional OFDM due to enhanced frequency diversity gain.
Keywords :
OFDM modulation; channel coding; equalisers; error statistics; frequency-domain analysis; interleaved codes; least mean squares methods; time division multiplexing; BER performance; MMSE-FDE; OFDM-TDM; bit error rate; channel coding; channel frequency-selectivity enhancement; computer simulation; diversity gain; frequency-domain equalization; interleaving code; minimum mean square error; orthogonal frequency division multiplexing; time division multiplexing; Bit error rate; Channel coding; Computer simulation; Concatenated codes; Frequency diversity; Interleaved codes; Mean square error methods; OFDM; Performance gain; Time division multiplexing;
Conference_Titel :
Communications, 2008. ICC '08. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2075-9
Electronic_ISBN :
978-1-4244-2075-9
DOI :
10.1109/ICC.2008.712
