TR-IR-UWB Performance Improvement Using Modified Hadamard Matrix


  • Hamid M. Farhan Razak School of Engineering and Advanced Technology, University Technology Malaysia, 54100 Jalan Sultan Yahya Petra, Kuala Lumpur, Malaysia
  • L.A. Latiff Razak School of Engineering and Advanced Technology, University Technology Malaysia, 54100 Jalan Sultan Yahya Petra, Kuala Lumpur, Malaysia
  • Mohammed H. Nassir School of Engineering, Taylor’s University, Lake-side Campus, Selangor, Malaysia


Generated Modified Hadamard Matrix, Inter Pulse Interference, Modified Traditional Transmitted Reference, Ultra-wideband


During the last three decades, ultra-wideband (UWB) has become one of the most prominent techniques encountered in the communication system. UWB brought advantages to the human community such as higher data rate, excellent time domain resolution, and immunity to both multipath and interference. The time domain resolution was earlier improved by rake receiver where a drawback was experienced due to complexity. Rake receiver was then replaced by the traditional transmitted reference (TTR)-UWB which simplifies the complexity but creates another set of drawback of inter-pulse interference (IPI) and significant reduction in data rate. To overcome these drawbacks, controlling time delay ( ) in conjunction with the maximum delay spread ( ) became the key element in ever-lasted improving UWB system. In this work, is chosen as much smaller than -the condition that was achieved by modifying Hadamard matrix which satisfies balance and orthogonality. The outcome of this setting, IPI was totally removed and data rate was improved. And in this work, we proposed modified TTR (MTTR) after adding a generated modified Hadamard matrix (GMHM) component to the structure of TTR transceiver. The simulation results show that the new modelling system which is based on Hadamard matrix has shown very good improvement compared to TTR. The results show that S/N of the modified TTR has shifted by about 3 dB compared to TTR. It is also observed that with a constant number of users detected by number of frames, S/N undergoes a shift of about 4 dB


S. M. Sadough, “A Tutorial on Ultra Wideband Modulation and Detection Schemes,” Shahid Beheshti Univ. Fac. Electr.Comput. Eng, Tehran, I. R. Iran, no. April, pp. 1–22, 2009

R. Hoctor and H. Tomlinson, “Delay-hopped transmitted-reference RF communications,” 2002 IEEE Conf. Ultra Wideband Syst. Technol. (IEEE Cat. No.02EX580), pp. 265–269, 2002.

D. I. Kim, “Multiple Access Performance of M -ary Orthogonal Balanced UWB Transmitted-Reference Systems,” in IEEE Communications Society subject matter experts for publication in the ICC 2008 proceedings, 2008, pp. 3933–3937.

L. Li, S. Member, and J. K. Townsend, “M-ary PPM for Transmitted Reference Ultra-Wideband Communications,” IEEE Trans. Commun., vol. 58, no. 7, pp. 1912–1917, 2010.

J. Li, J. Lin, and Z. Shi, “A New Transmitted Reference Based UWB Receiver,” 2010 Int. Conf. Commun. Mob. Comput., pp. 97–101, Apr. 2010.

A. a. D’Amico, “IR-UWB Transmitted-Reference Systems With Partial Channel Knowledge: A Receiver Design Based on the Statistical Invariance Principle,” IEEE Trans. Signal Process., vol. 59, no. 4, pp. 1435–1448, 2011.

S. Farahmand, X. Luo, and G. B. Giannakis, “Orthogonally-spread block transmissions for ultra-wideband impulse radios,” IEEE Trans. Wirel. Commun., vol. 7, no. 10, pp. 3668–3673, 2008.

S. Ahmed and H. Arslan, “Inter-symbol Interference in High Data Rate Transmit Reference UWB Transceivers,” IEEE Conf. Publ., no. 1, pp.773–778, 2007.

Alpana P. Adsul, “CHAPTER -3 ANALYSIS AND DESIGN OF TRANSMITTED REFERENCE IR-UWB SYSTEM Chapter 3 Analysis ... Transmitter Reference IR-UWB System,” in Design and Performance Evaluation of Transmitted Reference Ultra Wideband Receiver, 2013,

pp. 34–48.

IEEE 802.15.3a, “Channel modelling sub-committee final report,” IEEEP802.15-02/490r1-SG3a.

Z. Liang, X. Dong, L. Jin, and T. a. ulliver, “Improved low-complexity transmitted reference pulse cluster for ultra-wideband communications,” IET Commun., vol. 6, no. 7, p. 694, 2012




How to Cite

M. Farhan, H., Latiff, L., & H. Nassir, M. (2016). TR-IR-UWB Performance Improvement Using Modified Hadamard Matrix. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 8(4), 17–20. Retrieved from