Title :
Improved space-time-frequency block code for MIMO-OFDM wireless communications
Author :
Bao Tao ; Yongling, Liang
Author_Institution :
Dept. Electron. Eng., Northwestern Polytech. Univ., Xian, China
Abstract :
This paper presents an improved STF (space-time-frequency) coded MIMO-OFDM (multiple-input and multiple-output, orthogonal frequency-division multiplexing) system for two transmit antennas. In this system, we devise an interleaving method which can maximize diversity gain and achieve optimal system performance with a moderate decoding complexity. Complete characterization of the proposed STF-OFDM scheme is provided and its BER (bit error rate), BLER (block error rate) and spectral efficiency performance is evaluated. Result of the simulation shows that the proposed scheme significantly improves the system performance.
Keywords :
MIMO communication; OFDM modulation; decoding; error statistics; optimal systems; space-time block codes; transmitting antennas; wireless channels; MIMO-OFDM wireless communications; bit error rate; block error rate; diversity gain; interleaving method; moderate decoding complexity; multiple-input multiple-output; optimal system; orthogonal frequency-division multiplexing; space-time-frequency block code; two transmit antennas; Encoding; Frequency diversity; Frequency domain analysis; OFDM; Transmitting antennas; Wireless communication; MIMO systems; diversity; orthogonal frequency-division multiplexing (OFDM); space-time-frequency (STF) codes;
Conference_Titel :
Signal Processing, Communication and Computing (ICSPCC), 2012 IEEE International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4673-2192-1
DOI :
10.1109/ICSPCC.2012.6335579
