| This paper investigates mobile broadband communications, which undergo time-varying radio channels with large multipath delay spread. Space-time block transmission and single carrier modulation are adopted at the transmitter to combat the inter-symbol interference resulted from the multipath delay. The single carrier modems with frequency-domain equalization have similar performance and complexity as orthogonal frequency-division multiplexing, yet less sensitive to radio frequency impairments. At the receiver, we propose the Turbo equalization that consists of a minimum mean-square error equalizer in the frequency domain and a channel decoder. In order to cope with the time-varying characteristics of the mobile channel, the received data is partitioned into blocks for the linear equalizer, and then combined as a decoding frame for the decoder. Simulation results show good performance of the proposed scheme with feasible computational complexity. |
| Liang Dong received the B.S. degree in applied physics with minor in computer engineering from Shanghai Jiao Tong University, Shanghai, China, in 1996, and the M.S. and Ph.D. degrees in electrical and computer engineering from the University of Texas at Austin, Austin, TX, in 1998 and 2002, respectively.
From 1996 to 2002, he was a Research Assistant with the Department of Electrical and Computer Engineering, the University of Texas at Austin. From 1998 to 1999, he was an Engineer at CWiLL Telecommunications, Inc., Austin, TX, where he participated in the design and implementation of a smart antenna communications system. During the summer of 2000, he was a Consultant for Navini Networks, Inc., Richardson, TX. From 2002 to 2004, he was a Research Associate with the Department of Electrical Engineering, University of Notre Dame. He joined the faculty of Western Michigan University in August 2004 and is currently an Assistant Professor of Electrical and Computer Engineering. His research interests include array signal processing for communications, channel estimation and modeling, space-time coding, and wireless networking. Dr. Dong is a member of Phi Kappa Phi, Sigma Xi, and Tau Beta Pi.
Yao Zhao received the B.E. degree in Electrical Engineering from Tian Jin University, Tianjin, China, in 1996 and the M.E. degree in Information School from Beijing University of Posts and Telecommunications in 2001. He worked in Siemens COM R&D Center in Beijing, China from 2001 to 2005.
He is pursuing the Ph.D. degree in Department of Electrical Engineering, Western Michigan University. His research interests focus on wireless communications.
|