Performance Analysis and Optimization of $\hbox{T}_{\rm c}$-DTR IR-UWB Receivers Over Multipath Fading Channels With Tone Interference

Abstract

In this paper, we analyze the performance of a particular class of Transmitted-Reference (TR) receivers for Impulse Radio (IR-) Ultra Wide Band (UWB) communication systems, which is called Chip-Time Differential Transmitted-Reference (Tc-DTR). The analysis aims at investigating the robustness of this receiver to single-and multi-tone Narrow-Band Interference (NBI), and at comparing its performance with other non-coherent receivers proposed in the literature. It is shown that the Tc-DTR scheme provides more degrees of freedom for performance optimization, and it is inherently more robust to NBI than other non-coherent receivers. More specifically, it is analytically proved that the performance improvement is due to the chip-time level differential encoding/decoding of the Direct Sequence (DS) code, and to an adequate design of DS code and average pulse repetition time. The analysis encompasses performance metrics that are useful for both data detection (i.e., Average Bit Error Probability, ABEP) and timing acquisition (i.e., False Alarm Probability, P fa , and Detection Probability, P d). Moving from the proposed semi-analytical framework, the optimal code design and system parameters are derived, and it is highlighted that the same optimization criterion can be applied to all performance metrics considered in this paper. Also, analytical frameworks and theoretical findings are substantiated via Monte Carlo simulations. Index Terms-Ultra wide band (UWB), impulse radio (IR), transmitted-reference (TR), tone interference, multipath fading channels, code design, performance analysis. I. INTRODUCTION T RANSMITTED-REFERENCE (TR) signaling schemes in conjunction with auto-correlation receiver architectures are well-known techniques to transmit and receive data over unknown fading channels (see, e.g.

Radio Optical Network Simulation Tool (RONST)

“…UWB is a fast-growing successful technology and a suitable candidate for many communications applications due to the numerous advantages offered by this technology, which perfectly suits the needs of high data rate-short-range wireless communication networks [2,3]. UWB signals show high robustness in dense multipath fading environments [4,5]. Moreover, low power consumption and very low levels of spectral emission are some of the advantages of this technology [6].…”