Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
}
TY - GEN
T1 - Differential space-time block-coded OFDMA for frequency-selective fading channels
AU - Chen, Zhonglin
AU - Zhu, Guangxi
AU - Cai, Wei
AU - Ni, Qiang
PY - 2003
Y1 - 2003
N2 - Combining, differential Alamouti space-time block code (DASTBC) with orthogonal frequency-division multiple access (OFDMA). this paper introduces a multiuser/multirate transmission scheme, which allows full-rate and full-diversity noncoherent communications using two transmit antennas over frequency-selective fading channels. Compared with the existing differential space-time coded OFDM designs, our scheme imposes no restrictions on signal constellations, and thus can improve the spectral efficiency by exploiting efficient modulation techniques such as QAM, APSK etc. The main principles of our design are as follows: OFDMA eliminates multiuser interference, and converts multiuser environments to single-user ones; Space-time coding achieves performance improvement by exploiting space diversity available with multiple antennas, no matter whether channel state information is known to the receiver. System performance is evaluated both analytically and with simulations.
AB - Combining, differential Alamouti space-time block code (DASTBC) with orthogonal frequency-division multiple access (OFDMA). this paper introduces a multiuser/multirate transmission scheme, which allows full-rate and full-diversity noncoherent communications using two transmit antennas over frequency-selective fading channels. Compared with the existing differential space-time coded OFDM designs, our scheme imposes no restrictions on signal constellations, and thus can improve the spectral efficiency by exploiting efficient modulation techniques such as QAM, APSK etc. The main principles of our design are as follows: OFDMA eliminates multiuser interference, and converts multiuser environments to single-user ones; Space-time coding achieves performance improvement by exploiting space diversity available with multiple antennas, no matter whether channel state information is known to the receiver. System performance is evaluated both analytically and with simulations.
U2 - 10.1109/PIMRC.2003.1259100
DO - 10.1109/PIMRC.2003.1259100
M3 - Conference contribution/Paper
SN - 0-7803-7822-9
SP - 2171
EP - 2175
BT - Personal, Indoor and Mobile Radio Communications, 2003. PIMRC 2003. 14th IEEE Proceedings on
PB - IEEE
T2 - 14th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications
Y2 - 7 September 2003 through 10 September 2003
ER -