A low-power, low data-rate, Ultra-wideband receiver architecture for indoor wireless systems

In this paper, a novel architecture for a low data-rate, low power consumption Impulse Radio (IR) Ultra-Wideband (UWB) receiver is presented in which the received UWB signal is downconverted to a given intermediate frequency (IF) rather than at baseband. This way, the requirement to implement two separate paths for the in-phase and the quadrature components is removed and the power consumption can be reduced. From the IF, the signal is converted to the digital domain by a set of 24 Redundant Signed Digit (RSD) Analog to Digital Converters (ADCs) working at the pulse repetition rate. The digitized signal is then correlated with a predefined template prior to be fed to the bit detector. The trade-offs for the selection of the IF are highlighted and the BER performance of the proposed receiver is evaluated using simulations in 802.15.3a multipath channels. The expected power consumption for the implementation of the receiver using a CMOS process is also provided.

[1]  Klaus Witrisal,et al.  Equivalent system model of ISI in a frame-differential IR-UWB receiver , 2004, IEEE Global Telecommunications Conference, 2004. GLOBECOM '04..

[2]  R. Brodersen,et al.  AN INTEGRATED , LOW POWER , ULTRA-WIDEBAND TRANSCEIVER ARCHITECTURE FOR LOW-RATE , INDOOR WIRELESS SYSTEMS , 2002 .

[3]  Andreas F. Molisch,et al.  A Channel Model for Ultra Wideband Indoor Communication , 2003 .

[4]  Simon Haykin,et al.  Digital Communications , 2017 .

[5]  Robert A. Scholtz,et al.  Multiple access with time-hopping impulse modulation , 1993, Proceedings of MILCOM '93 - IEEE Military Communications Conference.

[6]  F. Tufvesson,et al.  Ultra-wideband communication using hybrid matched filter correlation receivers , 2004, 2004 IEEE 59th Vehicular Technology Conference. VTC 2004-Spring (IEEE Cat. No.04CH37514).

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

[8]  Cyril Botteron,et al.  Performance comparison of UWB impulse-based multiple access schemes in indoor multipath channels , 2008, 2008 5th Workshop on Positioning, Navigation and Communication.

[9]  Moe Z. Win,et al.  Ultra-wide bandwidth time-hopping spread-spectrum impulse radio for wireless multiple-access communications , 2000, IEEE Trans. Commun..

[10]  Marian Verhelst,et al.  System design of an ultra-low power, low data rate, pulsed UWB receiver in the 0-960 MHz band , 2005, IEEE International Conference on Communications, 2005. ICC 2005. 2005.

[11]  J.R. Long,et al.  A delay filter for an ir-UWB front-end , 2005, 2005 IEEE International Conference on Ultra-Wideband.

[12]  Moe Z. Win,et al.  Performance of low-complexity RAKE reception in a realistic UWB channel , 2002, 2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333).

[13]  Moe Z. Win,et al.  Performance of selective Rake reception in a realistic UWB channel , 2002 .

[14]  Andreas F. Molisch,et al.  Channel models for ultrawideband personal area networks , 2003, IEEE Wireless Communications.

[15]  J.R. Long,et al.  A quantized analog delay for an ir-UWB quadrature downconversion autocorrelation receiver , 2005, 2005 IEEE International Conference on Ultra-Wideband.