Brunel University Research Archive (BURA) >
Schools >
School of Engineering and Design >
School of Engineering and Design Research papers >

Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/3609

Title: Differential space-time block-coded OFDMA for frequency-selective fading channels
Authors: Chen, Z
Zhu, G
Cai, W
Ni, Q
Publication Date: 2003
Publisher: IEEE
Citation: PIMRC 2003. 14th IEEE Proceedings on Personal, Indoor and Mobile Radio Communications. Beijing, China, September 2003.
Abstract: 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 10 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 s 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.
URI: http://bura.brunel.ac.uk/handle/2438/3609
Appears in Collections:School of Engineering and Design Research papers
Electronic and Computer Engineering

Files in This Item:

File Description SizeFormat
plugin-getPDF.jsp.pdf346.17 kBAdobe PDFView/Open

Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.

 


Library (c) Brunel University.    Powered By: DSpace
Send us your
Feedback. Last Updated: September 14, 2010.
Managed by:
Hassan Bhuiyan