Waveform-level precoding with simple energy detector receiver for wideband communication

Wideband waveform-level precoding with simple energy detector receiver is investigated in this paper. The motivation is to provide a cheap radio network with simple receivers and sophisticated transmitters. The energy detector receiver performs relatively poorly, but waveform-level precoding can be used to compensate for the performance loss. Waveform-level precoding is a transmitter-side processing taking advantage of known channel information. Given channel impulse response (CIR), transmitted waveform can be optimized in some criterion. In this paper the optimization goal is to maximize an equivalent signal-to-noise ratio (SNR) at the receiver, assuming no inter-symbol-interference (ISI). Close-form expressions are derived based on the Park's empirical model for evaluating the receiver operating characteristic (ROC) of energy-detector. Numerical approach is adopted to handle continuous time signals. Channel data measured in office area is used to obtain numerical results. Performance comparison with time reversal precoding as benchmark shows that the optimal waveform can offer gains of several decibels.

[1]  J. R. Pierce,et al.  Nonsynclronous Time Division with Holding and with Random Sampling , 1952, Proceedings of the IRE.

[2]  Yang Xiao,et al.  Handbook on Sensor Networks , 2010 .

[3]  J. Hancock,et al.  A Transmitted Reference System for Communication in Random of Unknown Channels , 1965 .

[4]  B. M. Sadler,et al.  An ultra-wideband autocorrelation demodulation scheme with low-complexity time reversal enhancement , 2005, MILCOM 2005 - 2005 IEEE Military Communications Conference.

[5]  Robert C. Qiu,et al.  UWB MISO Time Reversal With Energy Detector Receiver Over ISI Channels , 2007, 2007 4th IEEE Consumer Communications and Networking Conference.

[6]  Nan Guo,et al.  Time reversal with MISO for ultra-wideband communications: experimental results , 2006, 2006 IEEE Radio and Wireless Symposium.

[7]  Brian M. Sadler,et al.  Reduced-complexity UWB time-reversal techniques and experimental results , 2007, IEEE Transactions on Wireless Communications.

[8]  Brian M. Sadler,et al.  Weighted energy detection of ultra-wideband signals , 2005, IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005..

[9]  David K. Barton.  Simple Procedures for Radar Detection Calculations , 1969, IEEE Transactions on Aerospace and Electronic Systems.

[10]  D. L. Goeckel,et al.  Slightly frequency-shifted reference ultra-wideband (UWB) radio: TR-UWB without the delay element , 2005 .

[11]  K. Witrisal,et al.  Transmitted-reference UWB systems using weighted autocorrelation receivers , 2006, IEEE Transactions on Microwave Theory and Techniques.

[12]  Jeffrey Mehlman,et al.  A Class of Ultra Wideband (UWB) Systems with Simple Receivers , 2007, MILCOM 2007 - IEEE Military Communications Conference.

[13]  R.F. Mills,et al.  A comparison of various radiometer detection models , 1996, IEEE Transactions on Aerospace and Electronic Systems.

[14]  Vincenzo Lottici,et al.  Multiple symbol differential detection for UWB communications , 2008, IEEE Transactions on Wireless Communications.

[15]  Y.-L. Chao.  Optimal integration time for UWB transmitted reference correlation receivers , 2004, Conference Record of the Thirty-Eighth Asilomar Conference on Signals, Systems and Computers, 2004..

[16]  Don J. Torrieri.  Principles of Secure Communication Systems , 1985 .

[17]  Chenming Zhou,et al.  Time Reversal With MISO for Ultrawideband Communications: Experimental Results , 2006, IEEE Antennas and Wireless Propagation Letters.

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

[19]  David Tse,et al.  Channel Identification: Secret Sharing using Reciprocity in Ultrawideband Channels , 2007 .

[20]  W. Hirt,et al.  Robust noncoherent receiver exploiting UWB channel properties , 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).

[21]  J. Romme,et al.  Transmit reference impulse radio systems using weighted correlation , 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).

[22]  M. Fink,et al.  Time Reversal of Ultrasonic Fields-Part I : Basic Principles , 2000 .

[23]  H. Urkowitz.  Energy detection of unknown deterministic signals , 1967 .

[24]  Matthieu R. Bloch,et al.  Wireless Information-Theoretic Security , 2008, IEEE Transactions on Information Theory.

[25]  M. Fink,et al.  Time reversal of ultrasonic fields. I. Basic principles , 1992, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[26]  Haige Xiang,et al.  Weighted noncoherent receivers for UWB PPM signals , 2006, IEEE Communications Letters.

[27]  Robert A. Scholtz,et al.  Optimal and suboptimal receivers for ultra-wideband transmitted reference systems , 2003, GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489).

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

[29]  A. Dentinger,et al.  Delay hopped transmitted reference experimental results , 2002, 2002 IEEE Conference on Ultra Wideband Systems and Technologies (IEEE Cat. No.02EX580).

[30]  Ke Park.  Performance Evaluation of Energy Detectors , 1978, IEEE Transactions on Aerospace and Electronic Systems.

[31]  Huaping Liu,et al.  A decision-feedback autocorrelation receiver for pulsed ultra-wideband systems , 2004, Proceedings. 2004 IEEE Radio and Wireless Conference (IEEE Cat. No.04TH8746).

[32]  Robert A. Scholtz,et al.  Weighted correlation receivers for ultra-wideband transmitted reference systems , 2004, IEEE Global Telecommunications Conference, 2004. GLOBECOM '04..

[33]  U. Mitra,et al.  Integration interval optimization and performance analysis for UWB transmitted reference systems , 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).

[34]  Nan Guo,et al.  Improved autocorrelation demodulation receivers based on multiple-symbol detection for UWB communications , 2006, IEEE Transactions on Wireless Communications.

[35]  Geert Leus,et al.  Equivalent system model and equalization of differential impulse radio UWB systems , 2005, IEEE Journal on Selected Areas in Communications.

[36]  B. Uguen,et al.  An impulse radio asynchronous transceiver for high data rates , 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).

[37]  V. Srinivasa Somayazulu,et al.  A differential detector for an ultra-wideband communications system , 2002, Vehicular Technology Conference. IEEE 55th Vehicular Technology Conference. VTC Spring 2002 (Cat. No.02CH37367).

[38]  Klaus Witrisal,et al.  Performance enhancement of differential UWB autocorrelation receivers under ISI , 2006, IEEE Journal on Selected Areas in Communications.

[39]  Raymond Knopp,et al.  On the achievable rates of ultra-wideband PPM with non-coherent detection in multipath environments , 2003, IEEE International Conference on Communications, 2003. ICC '03..

[40]  Nan Guo,et al.  Demonstrating Time Reversal in Ultra-wideband Communications Using Time Domain Measurements , 2005 .

[41]  Huaping Liu,et al.  Hybrid Coherent and Frequency-Shifted-Reference Ultrawideband Radio , 2007, IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference.