A partial interference cancellation (PIC) group decoding based space-time block code (STBC) design criterion was recently proposed by Guo and Xia, where the decoding complexity and the code rate...
Haiquan Wang, Genyuan Wang, Xiang-gen Xia, Senior Member
Abstract—In this correspondence, we propose some new designs of P P unitary space–time codes of sizes 6, 32, 48, 64 with best-known diversity products (or product distances) by partially using...
Radar Imaging of Moving Targets in Foliage Using (2008)
Multifrequency Multiaperture, Polarimetric Sar, Genyuan Wang, Xiang-gen Xia, Senior Member, Victor C. Chen
Abstract—Because of the low signal-to-clutter ratio, it is a difficult problem to detect and image moving targets in foliage. In this paper, a multifrequency multiaperture polarimetric synthetic...
Unitary Space–Time Codes From Alamouti’s Scheme With APSK Signals (2008)
Aijun Song, Student Member, Genyuan Wang, Weifeng Su, Xiang-gen Xia, Senior Member
Abstract—Unitary space–time codes have been used in differential space–time modulation, when neither the transmitter nor the receiver of a multiple antenna system knows the channel state...
A Sharpened Dynamic Range of a Generalized Chinese Remainder Theorem for Multiple Integers (2008)
J. Proakis, Digital Communications, T. E. Fuja, ...
over the Rayleigh fading channel close to the cutoff rate, ” IEEE Trans.
Xue-bin Liang, Xiang-gen Xia, Senior Member
Abstract—Differential space–time modulation has been recently proposed in the literature for multiple-antenna systems over Rayleigh-fading channels, where neither the transmitter nor the receiver...
In this paper, we propose a partial interference cancellation (PIC) group decoding for linear dispersive space-time block codes (STBC) and a design criterion for the codes to achieve full diversity...
Dirk Slock, Vahid Tarokh, Xiang-gen Xia, Dirk Slock, Vahid Tarokh, Xiang-gen Xia, ...
articles distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Range and Velocity Estimation of Moving Targets Using Multiple Stepped-frequency Pulse Trains (2008)
Gang Li, Huadong Meng, Xiang-Gen Xia, Ying-Ning Peng
Range and velocity estimation of moving targets using conventional steppedfrequencypulse radar may suffer from the range-Doppler coupling and the phasewrapping. To overcome these problems, this paper...
Hong Zhang, Xiang-gen Xia, Qian Zhang, Wenwu Zhu
The precoded orthogonal frequency division multiplexing (OFDM) system with adaptive vector channel allocation can provide more protection against errors to more important layers in the layered bit...
High-rate full-diversity space-timefrequency codes for MIMO multipath block-fading channels (2007)
Wei Zhang, Xiang-gen Xia, Senior Member, P. C. Ching, Senior Member
Abstract—A systematic design of high-rate full-diversity space–time–frequency (STF) codes is proposed for multiple-input multiple-output frequency-selective block-fading channels. It is shown...
On optimal quasi-orthogonal space-time block codes with minimum decoding complexity (2005)
Haiquan Wang, Dong Wang, Xiang-gen Xia
Orthogonal space-time block codes (OSTBC) from orthogonal designs have both advantages of complex symbol-wise maximum-likelihood (ML) decoding and full diversity. However, their symbol rates are...
Some super-orthogonal space-time trellis codes based on Non-PSK (2005)
Aijun Song, Student Member, Genyuan Wang, Xiang-gen Xia, Senior Member
Abstract—Super-orthogonal space-time trellis codes recently proposed in the literature are space-time trellis codes of full diversity and high rates systematically constructed by concatenating...
A family of distributed space-time trellis codes with asynchronous cooperative diversity (2005)
Yabo Li, Yue Shang, Xiang-gen Xia
Abstract — In current cooperative communication schemes, to achieve cooperative diversity, synchronization between terminals is usually assumed, which may not be practical since each terminal has...
On Information Theory, Kejie Lu, Shengli Fu, Student Member, Xiang-gen Xia, Senior Member
In this correspondence, we presentsystem and closed-form constructions ofcom orthogonal space--tim block codes from com orthogonal designs of rates (k +1)=2k for 2k 0 1 or 2ktransmw antennas for any...
In this letter, super-orthogonal space-time trellis codes (SOSTTC) are extended for quadrature amplitude modulation (QAM) constellations. A systematic set-partitioning method for QAM constellations...
Systematic and optimal cyclotomic lattices and diagonal space-time block code designs (2004)
Genyuan Wang, Huiyong Liao, Haiquan Wang, Xiang-gen Xia, Senior Member
Abstract—In this correspondence, a new and systematic design of cyclotomic lattices with full diversity is proposed by using some algebraic number theory. This design provides infinitely many full...
Kejie Lu, Shengli Fu, Xiang-gen Xia
In this correspondence, we present a systematic and closed form construction of complex orthogonal space-time block codes from complex orthogonal designs of rates(k+1)=2kfor2k�1or2ktransmit...
Signal constellations for quasi-orthogonal space-time block codes with full diversity (2004)
Weifeng Su, Xiang-gen Xia, Senior Member
Abstract—Space–time block codes (STBCs) from orthogonal designs proposed by Alamouti, and Tarokh–Jafarkhani–Calderbank have attracted considerable attention lately due to their fast...
Upper bounds of rates of complex orthogonal space-time block codes (2003)
Haiquan Wang, Xiang-gen Xia, Senior Member
Abstract—In this correspondence, we derive some upper bounds of the rates of (generalized) complex orthogonal space–time block codes. We first present some new properties of complex orthogonal...
Wavelet-based texture analysis and synthesis using hidden Markov models (2003)
Guoliang Fan, Xiang-gen Xia, Senior Member
Wavelet-domain hidden Markov models (HMMs), in particular hidden Markov tree (HMT), were recently proposed and applied to image processing, where it was usually assumed that three subbands of the 2-D...
Genyuan Wang, Aijun Song, Xiang-Gen Xia
Differential space-time modulation (DSTM) for multiple antenna communication systems has been recently proposed for frequency-nonselective fading channels. In broadband multirate systems,...
Xiang-Gen Xia, Aijun Song, Genyuan Wang
Differential space-time modulation (DSTM) for multiple antenna communication systems has been recently proposed for frequency-nonselective fading channels. In broadband multirate systems,...
Genyuan Wang, Aijun Song, Xiang-Gen Xia
Differential space-time modulation (DSTM) for multiple antenna communication systems has been recently proposed for frequency-nonselective fading channels. In broadband multirate systems,...
Filterbank precoders for blind equalization: polynomial ambiguity resistant precoders (PARP (2001)
Xiang-gen Xia, Senior Member, Weifeng Su, Hui Liu
Abstract—Filterbank precoding in the intersymbol interference (ISI) mitigation has recently attracted much attention. Two main areas of such research have been explored. One of them is on...
A joint multi-context and multiscale approach to Bayesian image segmentation (2001)
In this paper, a joint multi-context and multiscale (JMCMS) approach to Bayesian image segmentation is proposed. In addition to the multiscale framework, the JMCMS applies multiple context models to...
Modulated Coding for Digital Communication Systems Under ISI/Multipath Fading and Jamming (1998)
This report describes the main research achievements during the time period cited above on the research project in the area of telecommunications. The main achievements include the systematic study...
Modulated Coding for Digital Communication Systems under ISI/Multipath Fading and Jamming (1998)
This report describes the main research achievements during the time cited above on tile research in the area of telecommunications. The main achievements include the joint turbo and modulated coding...
Space-Time Code Designs for Broadband Wireless Communications (1998)
The goal of this research is to design new space & time codes, such as complex orthogonal space & time block codes with rate above 1/2 from complex orthogonal designs for QAM, PSK, and CPM signals,...
Vector-Valued Wavelets and Vector Filter Banks (1994)
In this paper, we introduce vector-valued multiresolution analysis and vector-valued wavelets for vector-valued signal spaces. We construct vector-valued wavelets by using paraunitary vector filter...
Topics in wavelet transforms / (1992)
Thesis (Ph. D.)--University of Southern California, 1992.