An Ultra-Wideband Impulse-Radio Transceiver Chipset Using Synchronized-OOK Modulation

This work presents a low-complexity IR-UWB chipset which achieves synchronization and demodulation at the receiver relying only on a ring oscillator clock. The modulation scheme used, synchronized-OOK (S-OOK), permits low power timing acquisition and data reception with a static CMOS digital synchronizer and demodulator counting 61 logic elements. The receiver consists of a modified energy detector (ED) that allows to asynchronously receive UWB pulses in presence of narrowband interference (NBI) with power levels up to -5 and -16 dBm for 5.4 and 2.4 GHz continuous wave interfering signals respectively. The sensitivity is -60/ -66 dBm with an overall energy dissipation of 2.9/3.9 nJ/bit for a 1 Mbps S-OOK PRBS data stream and a 100% power duty cycle. The complete demodulation and synchronization digital back-end consumes only 0.2 mW (including on-chip output buffers) during normal operation. The IR-UWB transmitter is based on a gated LC oscillator and achieves pulse durations of ~2 ns for bandwidths of 500 MHz. It consumes 249 pJ/bit energy per bit at 1 Mbps OOK.

[1]  Ian F. Akyildiz,et al.  Sensor Networks , 2002, Encyclopedia of GIS.

[2]  Peter R. Kinget,et al.  A Discrete-Time Digital-IF Interference-Robust Ultrawideband Pulse Radio Transceiver Architecture , 2010, IEEE Transactions on Circuits and Systems I: Regular Papers.

[3]  Denis C. Daly,et al.  A 0.55V 16Mb/s 1.6mW non-coherent IR-UWB digital baseband with ±1ns synchronization accuracy , 2009, 2009 IEEE International Solid-State Circuits Conference - Digest of Technical Papers.

[4]  K. Sakamura,et al.  A UWB-IR Transmitter With Digitally Controlled Pulse Generator , 2007, IEEE Journal of Solid-State Circuits.

[5]  D. Belot,et al.  Single-chip CMOS pulse generator for UWB systems , 2006, IEEE Journal of Solid-State Circuits.

[6]  Matti Latva-aho,et al.  On the UWB system coexistence with GSM900, UMTS/WCDMA, and GPS , 2002, IEEE J. Sel. Areas Commun..

[7]  A.P. Chandrakasan,et al.  A 2.5 nJ/bit 0.65 V Pulsed UWB Receiver in 90 nm CMOS , 2007, IEEE Journal of Solid-State Circuits.

[8]  A. Chandrakasan,et al.  An All-digital UWB Transmitter in 90-nm CMOS , 2007 .

[9]  Wayne E. Stark,et al.  Performance of ultra-wideband communications with suboptimal receivers in multipath channels , 2002, IEEE J. Sel. Areas Commun..

[10]  Ian Oppermann,et al.  An ultrawideband system architecture for tag based wireless sensor networks , 2005, IEEE Transactions on Vehicular Technology.

[11]  Laurent Ouvry,et al.  A 1.1nJ/b 802.15.4a-compliant fully integrated UWB transceiver in 0.13µm CMOS , 2009, 2009 IEEE International Solid-State Circuits Conference - Digest of Technical Papers.

[12]  X.N. Fernando,et al.  Coexistence of Transmitted-Reference UWB System and IEEE 802.11a WLAN , 2006, 23rd Biennial Symposium on Communications, 2006.

[13]  R. Gharpurey,et al.  An Agile, Ultra-Wideband Pulse Radio Transceiver With Discrete-Time Wideband-IF , 2009, IEEE Journal of Solid-State Circuits.

[14]  Ruben Merz,et al.  Clock-offset tracking software algorithms for IR-UWB energy-detection receivers , 2009, 2009 IEEE International Conference on Ultra-Wideband.

[15]  R. Hoctor,et al.  Delay-hopped transmitted-reference RF communications , 2002, 2002 IEEE Conference on Ultra Wideband Systems and Technologies (IEEE Cat. No.02EX580).

[16]  Denis C. Daly,et al.  A pulsed UWB receiver SoC for insect motion control , 2009, 2009 IEEE International Solid-State Circuits Conference - Digest of Technical Papers.

[17]  Ishikuro Hiroki,et al.  A 1-V 299uW Flashing UWB Transceiver Based on Double Thresholding Scheme , 2006 .

[18]  A. Rabbachin,et al.  Synchronization analysis for UWB systems with a low-complexity energy collection receiver , 2004, 2004 International Workshop on Ultra Wideband Systems Joint with Conference on Ultra Wideband Systems and Technologies. Joint UWBST & IWUWBS 2004 (IEEE Cat. No.04EX812).

[19]  M. Takamiya,et al.  A 1-V 299/spl mu/W Flashing UWB Transceiver Based on Double Thresholding Scheme , 2006, 2006 Symposium on VLSI Circuits, 2006. Digest of Technical Papers..

[20]  Ian Oppermann,et al.  UWB wireless sensor networks: UWEN - a practical example , 2004, IEEE Communications Magazine.

[21]  Marian Verhelst,et al.  A reconfigurable, 0.13µm CMOS 110pJ/pulse, fully integrated IR-UWB receiver for communication and sub-cm ranging , 2009, 2009 IEEE International Solid-State Circuits Conference - Digest of Technical Papers.

[22]  Marco Crepaldi,et al.  An Ultra-Low-Power interference-robust IR-UWB transceiver chipset using self-synchronizing OOK modulation , 2010, 2010 IEEE International Solid-State Circuits Conference - (ISSCC).

[23]  Yuanjin Zheng,et al.  Low-Power CMOS RF front-end for non-coherent IR-UWB receiver , 2008, ESSCIRC 2008 - 34th European Solid-State Circuits Conference.

[24]  A. Wittneben,et al.  Hardware Aware Optimization of an Ultra Low Power UWB Communication System , 2007, 2007 IEEE International Conference on Ultra-Wideband.

[25]  L. Ouvry,et al.  Performance analysis of LDR UWB non-coherent receivers in multipath environments , 2005, 2005 IEEE International Conference on Ultra-Wideband.

[26]  Craig K. Rushforth.  Transmitted-reference techniques for random or unknown channels , 1964, IEEE Trans. Inf. Theory.

[27]  Edgar Sanchez-Sinencio,et al.  CMOS transconductance multipliers: a tutorial , 1998 .

[28]  L. Ouvry,et al.  Energy characteristics of UWB channel models applied to system design , 2005, 2005 IEEE International Conference on Ultra-Wideband.

[29]  David D. Wentzloff,et al.  A 47pJ/pulse 3.1-to-5GHz All-Digital UWB Transmitter in 90nm CMOS , 2007, 2007 IEEE International Solid-State Circuits Conference. Digest of Technical Papers.

[30]  Yuanjin Zheng,et al.  A CMOS Ultra Low-Power and Highly Efficient UWB-IR Transmitter for WPAN Applications , 2009, IEEE Trans. Circuits Syst. II Express Briefs.

[31]  Andrea Baschirotto,et al.  A CMOS Ultra-Wideband Receiver for Low Data-Rate Communication , 2007, IEEE Journal of Solid-State Circuits.

[32]  M. Crepaldi,et al.  UWB Receiver Design and Two-Way-Ranging Simulation using VHDL-AMS , 2006, 2006 Ph.D. Research in Microelectronics and Electronics.

[33]  Dan Rubenstein,et al.  Challenge: ultra-low-power energy-harvesting active networked tags (EnHANTs) , 2009, MobiCom '09.

[34]  K. Witrisal,et al.  Energy detection under narrowband interference in UWB systems , 2007, 2007 6th International Conference on Information, Communications & Signal Processing.