Title :
Diversity performance of precoded OFDM with MMSE equalization
Author_Institution :
Univ. of Wollongong, Wollongong
Abstract :
Two sets of bit error rate (BER) lower bounds for precoded orthogonal frequency division multiplexing (OFDM) systems using minimum mean square error (MMSE) equalization over frequency-selective multipath fading channels are evaluated by Monte Carlo method in this paper. The first set represents the best performance under different data group sizes used for precoding, whereas the second set represents the best performance under different channel multipath diversity orders. These performance bounds can serve as the guidelines for system designers to decide proper data group sizes for precoded OFDM systems in order to achieve better trade-off between system performance and complexity. Numerical results also confirm the usefulness of these lower bounds for practical OFDM systems.
Keywords :
Monte Carlo methods; OFDM modulation; error statistics; mean square error methods; MMSE; Monte Carlo method; OFDM systems; diversity performance; minimum mean square error; precoded orthogonal frequency division multiplexing; Bit error rate; Digital video broadcasting; Fast Fourier transforms; Frequency diversity; Guidelines; Intersymbol interference; Mean square error methods; OFDM modulation; Peak to average power ratio; System performance;
Conference_Titel :
Communications and Information Technologies, 2007. ISCIT '07. International Symposium on
Conference_Location :
Sydney,. NSW
Print_ISBN :
978-1-4244-0976-1
Electronic_ISBN :
978-1-4244-0977-8
DOI :
10.1109/ISCIT.2007.4392126
