Z
Zhengdao Wang
Researcher at Iowa State University
Publications - 156
Citations - 6019
Zhengdao Wang is an academic researcher from Iowa State University. The author has contributed to research in topics: Fading & MIMO. The author has an hindex of 30, co-authored 155 publications receiving 5740 citations. Previous affiliations of Zhengdao Wang include University of Virginia & University of Minnesota.
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A simple and general parameterization quantifying performance in fading channels
TL;DR: The proposed analysis offers a simple and unifying approach to evaluating the performance of uncoded and (possibly space-time) coded transmissions over fading channels, and the method applies to almost all digital modulation schemes, including M-ary phaseshift keying, quadrature amplitude modulation, and frequency-shift keying with coherent or noncoherent detection.
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Cyclic prefixing or zero padding for wireless multicarrier transmissions
TL;DR: Two novel equalizers are developed for ZP-OFDM to tradeoff performance with implementation complexity andSimulations tailored to the realistic context of the standard for wireless local area network HIPERLAN/2 illustrate the pertinent tradeoffs.
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Space-time diversity systems based on linear constellation precoding
TL;DR: Compared with existing ST block codes adhering to an orthogonal design (ST-OD), ST-LCP offers not only better performance, but also higher mutual information for N/sub t/>2 and the near-optimum sphere-decoding algorithm, as well as reduced-complexity suboptimum alternatives.
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OFDM or single-carrier block transmissions?
TL;DR: This work compares two block transmission systems over frequency-selective fading channels: orthogonal frequency-division multiplexing (OFDM) versus single-carrier modulated blocks with zero padding (ZP), and establishes that unlike OFDM, uncoded block transmissions with ZP enjoy maximum diversity and coding gains within the class of linearly precodes block transmissions.
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Quantifying the power loss when transmit beamforming relies on finite-rate feedback
TL;DR: This paper studies the symbol error rate (SER) for transmit beamforming with finite-rate feedback in a multi-input single-output setting and derives an SER lower bound that is tight for good beamformer designs.