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- Sinan Gezici, Zhi Tian, +4 authors Zafer Sahinoglu
- IEEE Signal Processing Magazine
- 2005
UWB technology provides an excellent means for wireless positioning due to its high resolution capability in the time domain. Its ability to resolve multipath components makes it possible to obtain… (More)
- Zhi Tian, Georgios B. Giannakis
- 2007 IEEE International Conference on Acoustics…
- 2007
In the emerging paradigm of open spectrum access, cognitive radios dynamically sense the radio-spectrum environment and must rapidly tune their transmitter parameters to efficiently utilize the… (More)
- Zhi Tian, Georgios B. Giannakis
- 2006 1st International Conference on Cognitive…
- 2006
In cognitive radio networks, the first cognitive task preceding any form of dynamic spectrum management is the sensing and identification of spectrum holes in wireless environments. This paper… (More)
- Xianren Wu, Zhi Tian, Timothy N. Davidson, Georgios B. Giannakis
- IEEE Transactions on Signal Processing
- 2004
With transmit power spectra strictly limited by regulatory spectral masks, the emerging ultra-wideband (UWB) communication systems call for judicious pulse shape design in order to achieve optimal… (More)
- Vincenzo Lottici, Zhi Tian
- IEEE Transactions on Wireless Communications
- 2008
Multiple symbol differential detection (MSDD) offers high-performance symbol recovery and bypasses training or channel estimation, which are highly desired features in low- power ultra-wideband (UWB)… (More)
- Zhi Tian, Weilin Huang, Tong He, Pan He, Yu Qiao
- ECCV
- 2016
We propose a novel Connectionist Text Proposal Network (CTPN) that accurately localizes text lines in natural image. The CTPN detects a text line in a sequence of fine-scale text proposals directly… (More)
- Fanzi Zeng, Chen Li, Zhi Tian
- IEEE Journal of Selected Topics in Signal…
- 2011
In wideband cognitive radio (CR) networks, spectrum sensing is an essential task for enabling dynamic spectrum sharing, but entails several major technical challenges: very high sampling rates… (More)
- Zhi Tian, Yohannes Tafesse, Brian M. Sadler
- IEEE Journal of Selected Topics in Signal…
- 2012
For cognitive radio networks, efficient and robust spectrum sensing is a crucial enabling step for dynamic spectrum access. Cognitive radios need to not only rapidly identify spectrum opportunities… (More)
- Zhi Tian
- IEEE GLOBECOM 2008 - 2008 IEEE Global…
- 2008
In emerging cognitive radio (CR) networks with spectrum sharing, the first cognitive task preceding any dynamic spectrum access is the sensing and identification of spectral holes in wireless… (More)
- Shoumin Liu, Zhi Tian
- IEEE Transactions on Signal Processing
- 2004
In this paper, we develop soft decision equalization (SDE) techniques for frequency selective multiple-input multiple-output (MIMO) channels in the quest for low-complexity equalizers with error… (More)