Ultra Wideband Communications
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Year 2011
- M. Lehne, S. Raman, “A 0.13-μm 1GSps CMOS Discrete-Time FFT Processor for Ultra-Wideband OFDM Wireless Transceivers,” IEEE Transactions on Microwave Theory and Techniques, vol. 59, no. 6, pp. 1639-1650, Jun. 2011.
Year 2010
- H. Zhai, S. Sha, V.K. Shenoy, S. Jung, M. Lu, K. Min, S. Lee, and D.S. Ha, “An Electronic Circuit System for Time-Reversal of Ultra-Wideband Short Impulses based on Frequency Domain Approach,” IEEE Transactions on Microwave Theory and Techniques, Vol. 58, No. 1, pp.74-86, January 2010.
- M. Lehne and S. Raman, “A Discrete-Time FFT Processor for Ultra-Wideband OFDM Wireless Transceivers: Architecture and Behavioral Modeling,” in IEEE Transactions on Circuits and Systems-I: Regular Papers, vol. 57, no. 11, pp, no. 11, pp. 3011-3022, Nov. 2010.
Year 2008
- M. Lehne and S. Raman, “A Prototype Analog/Mixed-Signal Fast Fourier Transform Processor IC for OFDM Receivers,” Proc. Of 2008 IEEE Radio and Wireless Symposium, Orlando, FL, Jan. 22-24, 2008, pp. 803-806.
Year 2007
- N. August, H.-J. Lee, and D.S. Ha, "Enabling Distributed Medium Access Control for Impulse-Based Ultra Wideband Radios,"IEEE Transactions on Vehicular Technology, Vol. 56, No. 3, pp. 1064-1075, May 2007.
- D.S. Ha and P. Schaumont, “Replacing Cryptography with Ultra Wideband (UWB) Modulation in Secure RFID,” International Conference on RFID, pp. 23-29, March, 2007.
Year 2006
- N. August and D.S. Ha, “Operation, System Architectures, and Physical Layer Design Considerations of Distributed MAC Protocols for UWB,” IEEE Transactions on Microwave Theory and Techniques, Vol. 54, No. 7, pp. 3001-3012, July 2006.
- W.C. Chung, N.J. August, and D.S. Ha, “Impact of Ultra Wideband (UWB) Radio Range on Wireless Sensor Networks,”International Conference on Condition Monitoring and Diagnosis, Session 3.14 (4 pages), April, 2006.
- H.-J. Lee, D. S. Ha, and S.S. Choi, “A 3-5 GHz CMOS UWB LNA with Input Matching Using Miller Effect,” International Solid-State Circuits Conference, Paper 11.6, February, 2006.
- N.J. August, W.C. Chung and D.S. Ha, “Distributed MAC Protocols for Ultra Wideband Ad Hoc and Sensor Networks,” Radio and Wireless Symposium, pp. 511-514, January, 2006.
- M. Lehne and S. Raman, “An Analog-Mixed-Signal Fourier Transform Preprocessor For Enhanced Dynamic Range In Broadband OFDM Receivers,” 8th IEEE Wireless and Microwave Technology Conference, Clearwater, FL, Dec. 4-5, 2006.
- S. Raman, J. Zhao, M. Lehne, R. Zele, and A. Tripathi, “RF/mixed-signal Ultrawideband Transmitter IC Design in Silicon Technologies,” 8th Intl. Conference on Solid-State and Integrated-Circuit Technology, Shanghai, China, Oct. 23-26, 2006, pp. 1808-1812. (Invited)
- J. Zhao and S. Raman, “A 0.18 mm RF CMOS Ultra Wideband Transmitter Front End RFIC,” 2006 IEEE RFIC Symposium Digest, San Francisco, CA, Jun. 11-13, 2006, pp. 506-509.
- M. Lehne and S. Raman, “An Analog/Mixed-Signal FFT Processor for Wideband OFDM Systems,” presented at the 2006 IEEE Sarnoff Symposium, Princeton, NJ, Mar. 27 – 28, 2006.
- J. Zhao, C. Maxey, A. Narayanan, and S. Raman, “A CMOS Pulse Generator for Wideband RF Transmitter Applications,” presented at the 2006 IEEE Sarnoff Symposium, Princeton, NJ, Mar. 27–28, 2006.
Year 2005
- N.J. August, H.-J. Lee, and D.S. Ha, “Design of a Pulse Sensor to Detect Medium Activity in UWB Networks,” International Conference on Ultra Wideband, pp. 70-75, September 2005.
- R. Thirugnanam, D.S. Ha, and S.S. Choi, “4-bit 1.4 GS/s Low Power Folding ADC for UWB Systems”, International Conference on Ultra Wideband, pp. 536-541, September 2005.
- S. Wang, D.S. Ha, and S.S. Choi, “A 6-bit 5.4-Gsamples/s CMOS D/A Converter for DS-CDMA UWB transceivers”,International Conference on Ultra Wideband, pp. 333-338, September 2005.
- S. Jose, H-.J. Lee, D.S. Ha, and S.S. Choi,. “A Low-power CMOS Power Amplifier for Ultra wideband (UWB) Applications,”International Symposium on Circuits and Systems, pp. 5111–5114, May 2005.
- H.-J. Lee, D. S. Ha, and S.S. Choi, “A Systematic Approach to CMOS Low Noise Amplifier Design for Ultra wideband Applications,” International Symposium on Circuits and Systems, pp. 3962–3965, May 2005.
Year 2004
- N.J. August and D. S. Ha, “An Efficient UWB Radio Architecture for Busy Signal MAC Protocols,” IEEE Conference on Sensor and Ad Hoc Communications and Networks, (10 pages), October, 2004.
- N.J. August, H.-J. Lee, and D. S. Ha, “An Efficient Multi-User UWB Receiver for Distributed Medium Access in Ad Hoc and Sensor Networks,” IEEE Radio and Wireless Conference, pp. 455-458, September, 2004.
- W.C. Chung, D.S. Ha, and David (Jianjun) Ni, “Performance Evaluation of an Ultra Wideband Radiolocation System with Directional Beacon,”IEEE Radio and Wireless Conference, pp. 59-62, September, 2004.
- R. Mostafa, P. Khanna, W.C. Chung, J.W. Heo, J.H. Reed and D.S. Ha, “Performance Evaluation of 2D Rake Algorithms for WCDMA-DL Applications at the Handset,” IEEE Radio and Wireless Conference, pp. 367-370, September, 2004.
- N.J. August, H.-J. Lee, and D. S. Ha, “Pulse Sense: A Method to Detect a Busy Medium in Pulse-Based Ultra Wideband (UWB) Networks,” IEEE Conference on Ultra Wideband Systems and Technologies, pp. 366-370, May 2004.
- N.J. August, R. Thirugnanam, and D.S. Ha, “An Adaptive UWB Modulation Scheme for Optimization of Energy, BER, and Data Rate,” IEEE Conference on Ultra Wideband Systems and Technologies, pp. 182-186, May 2004.
- H.-J. Lee, D. S. Ha, and H.-S. Lee, “Toward Digital UWB Radios: Part I – Frequency Domain UWB Receiver with 1 bit ADCs,”IEEE Conference on Ultra Wideband Systems and Technologies, pp. 248-252, May 2004.
- H.-J. Lee, D. S. Ha, and H.-S. Lee, “Toward Digital UWB Radios: Part II – A System Design to Increase Data Throughput for a Frequency Domain UWB Receiver,” IEEE Conference on Ultra Wideband Systems and Technologies, pp. 253-257, May 2004.
- N.J. August and H.-J. Lee, “Tackling Impulse UWB in Frequency Domain,” EE Times, May 17, 2004
- J. Zhao, A. Narayanan, C. Maxey, and S. Raman, “A SiGe BiCMOS Ultra Wide Band RFIC Transmitter Design for Wireless Sensor Networks,” Proc. of the 2004 IEEE Radio and Wireless Conference (RAWCON), Atlanta, GA, Sep. 19–24, 2004, pp. 215–218.
Year 2003
- N.J. August, W.C. Chung and D.S. Ha, "Energy Efficient Methods of Increasing Data Rate for Ultra Wideband (UWB) Communications Systems," IEEE Conference on Ultra Wideband Systems and Technologies, pp. 280-284, November 2003.
- W.C. Chung and D.S. Ha, "An Accurate Ultra Wideband (UWB) Ranging for Precision Asset Location," IEEE Conference on Ultra Wideband Systems and Technologies, pp. 389-393, November 2003.
- H.-J. Lee, D.S. Ha, and H.-S. Lee, "A Frequency-Domain Approach for All-Digital CMOS Ultra Wideband Receivers," IEEE Conference on Ultra Wideband Systems and Technologies, pp. 86-90, November 2003.
- K. Marsden, H.-J. Lee, D.S. Ha, and H.-S. Lee, "Low Power CMOS Re-programmable Pulse Generator for UWB Systems,"IEEE Conference on Ultra Wideband Systems and Technologies, pp. 443-337, November 2003.
- W.C. Chung and D.S. Ha, "On the Performance of Bi-Phase Modulated UWB Signals in a Multipath Channel," IEEE Vehicular Technology Conference, pp. 1654-1658, April 2003.
- H-J. Lee and D.S. Ha, "Frequency Domain Approach for CMOS Ultra-Wideband Radios," IEEE Computer Society Annual Symposium on VLSI, pp. 236-237, February 2003.
Year 2002
- M.W. Chapman and S. Raman, “A 60 GHz Uniplanar MMIC 4X Subharmonic Mixer,” IEEE Trans. on Microwave Theory and Techniques, vol. 50, no. 11, pp. 2580–2588, Nov. 2002.
Year 2001
- M.W. Chapman and S. Raman, “A 60 GHz Uniplanar MMIC 4X Subharmonic Mixer,” 2001 IEEE MTT-S International Microwave Symposium Digest, Phoenix, AZ, May 20-25, pp. 95-98.