- Performance of Delay Estimation and Range-Based Localization in Wireless Channels. (Ph.D. defense) slides
- Multi-Cell Joint Detection for TD-SCDMA Receivers. slides
- A Bayesian Bound (ZZB) for Time Delay Estimation with Frequency Hopping or Multicarrier Transmission. slides
- Ziv-Zakai Lower Bounds on Signal Parameter Estimation. slides
- GPS and Differential GPS: An Overview. slides
- N. Liu, Z. Xu, and B. M. Sadler, "Geolocation performance with biased range measurements",
IEEE Transactions on Signal Processing, Vol. 60, Issue 5, pp. 2315-2329, May 2012.
- N. Liu, Z. Xu, and B. M. Sadler, "Ziv–Zakai time-delay estimation bounds for frequency-hopping waveforms under frequency-selective fading",
IEEE Transactions on Signal Processing, Vol. 58, Issue 12, pp. 6400-6406, Dec. 2010.
- B. M. Sadler, N. Liu, Z. Xu, "Ziv-Zakai bounds on time delay estimation in unknown convolutive random channels,"
IEEE Transactions on Signal Processing, vol. 58, pp. 2729-2745, May 2010.
- N. Liu, Z. Xu, and B. M. Sadler, "Low complexity hyperbolic source localization with a linear sensor array,"
IEEE Signal Processing Letters, vol. 15, pp.865, Sept. 2008.
- N. Liu, Y. Li and X. Wang, "The research on the detection algorithms for layered space-time codes",
ACTA ELECTRONICA SINICA (in Chinese), vol. 31, issue 11, pp. 1754-1757, Nov. 2003.
分层空时码检测算法的研究, 电子学报, 卷31第11期, 1754-1757页, 2003年11月. PDF
- B. M. Sadler, N. Liu, and Z. Xu, “Ziv-Zakai bounds for time delay estimation with frequency hopping and multicarrier signals in wideband random channels,”
Proc. of IEEE Intl. Conf. on Acoustics, Speech, and Signal Proc., Dallas, Texas, Mar. 14-19, 2010.
- B. M. Sadler, N. Liu, Z. Xu, and R. Kozick, "Range-based geolocation in fading environments,"
IEEE Proc. of Allerton Conference, Monticello, Illinois, Sept. 23-26, 2008.
- B. M. Sadler, N. Liu, and Z. Xu, "Ziv-Zakai bound on time delay estimation in unknown convolutive random channels,"
Proc. of IEEE Sensor Array and Multichannel Signal Processing Workshop, Darmstadt, Germany, July 21-23, 2008.
- Z. Xu, N. Liu, and B. M. Sadler, "A simple closed-form linear source localization algorithm,"
Proc. of Milcom, Orlando, Florida, Oct. 29-31, 2007.
Member of Technical Program Committee for Conferences:
- 2014 IEEE International Conference on Communications (ICC 2014)
- 2014 IEEE Wireless Communications and Networking Conference (WCNC 2014)
- 2013 IEEE International Conference on Connected Vehicles and Expo (ICCVE 2013)
- 2013 International Conference on Electrical, Electronics and System Engineering (ICEESE 2013)
Journal paper review for:
- IEEE Transactions on Signal Processing
- IEEE Signal Processing Letters
- EURASIP Signal Processing