Title :
Performance of OFDM systems with space-time coding
Author :
Yue, Jiang ; Gibson, Jerry D.
Author_Institution :
Dept. of Electr. Eng., Southern Methodist Univ., Dallas, TX, USA
Abstract :
Space-time coding is a promising channel coding technique for wireless communications. Combined with antenna diversity, space-time coding can provide improved performance while maintaining the same data transmission rate, which makes it an attractive candidate for high-data-rate transmission systems such as orthogonal frequency division multiplexing (OFDM) systems. In this paper, we compare the performance of space-time coded OFDM systems with that of OFDM systems defined by IEEE 802.11a over AWGN channels and slow fading channels. Although space-time block coding does not have coding gain, it can be used as an inner coding method to obtain diversity gain. Space-time trellis coding obtains 1 dB coding gain and 9 dB diversity gain.
Keywords :
AWGN channels; IEEE standards; OFDM modulation; block codes; channel coding; data communication; diversity reception; fading channels; mobile radio; trellis coded modulation; wireless LAN; AWGN channels; IEEE 802.11a; OFDM systems; block coding; channel coding; data transmission rate; diversity gain; inner coding; orthogonal frequency division multiplexing; performance; slow fading channels; space-time trellis coding; wireless communications; AWGN channels; Block codes; Channel coding; Data communication; Diversity methods; Fading; Gain; OFDM; Transmitting antennas; Wireless communication;
Conference_Titel :
Wireless Communications and Networking Conference, 2002. WCNC2002. 2002 IEEE
Print_ISBN :
0-7803-7376-6
DOI :
10.1109/WCNC.2002.993507
