Overlapping multipath propagation is one of the main sources of mobile-positioning errors, especially in fast channel fading situations. In this paper we present a technique for detecting the existence of overlapping fading multipath components. Such information is vital for accurate resolving of overlapping multipath components as well as avoiding unnecessary computations and errors in single-...

This paper presents an architecture of Multiband Impulse Radio UWB (MB-IR-UWB) system based on Prolate Spheroidal Wave Function (PSWF) by binary time hopping pulse position modulation (TH-PPM) over multipath fading channel. In order to combat multipath fading, Rake receiver using maximal ratio combining (MRC) is applied to this system, which can successfully capture the unique multipath-rich pr...

Linear detectors can be based upon signal spatial, rather than temporal, characteristics and used to weight the sensors in an antenna array receiver. Such a receiver allows us to take advantage of the signal diversity offered by the multipath components of a signal. This provides an additional technique for distinguishing the signals of co-channel users with different enough multipath signature...

Abstract— In this work, the performance of turbo codes over the Rice multiplicative fading channel is evaluated through analysis and simulation. The analysis is conducted through improved upper bounds on bit error probabilities in conjunction with both the fully interleaved channel and the correlated Rice slow fading channel. The analytical expression of the improved bound is obtained by extend...

Supervised channel estimation in OFDM systems typically consists in the interpolation/smoothing over the entire time-frequency grid of the channel gains estimated on the pilot subcarriers. In this process, only statistical informations about the propagation channel are exploited (i.e., Doppler spectrum and power-delay profile). We propose a novel technique that is based on a general parametric ...

Recent progress in wireless receiver design has been towards iterative processing, where channel estimation and decoding is considered a joint optimization problem. Sparse channel estimation is another recent advancement, which exploits the inherent structure of those wireless channels that are composed of a small number of multipath components. In this work we design iterative receivers which ...

This paper analyz the output of the timing er effects. While [3] and oth impairments on spread spec receiver with early-late tim severe multipath will affect transmitting impulses ge bandwidth and operates a FCC. Also, UWB impul monocycles separated in conventional continuous tim of being able to resolve mor other existing spread spec shows that, assuming cluste parameters reported in [2] the s...

We propose Monte Carlo maximum likelihood estimation as a novel approach in the context of calibration and selection stochastic channel models. First, considering Turin model with inhomogeneous arrival rate prototypical example, we explain how general statistical methodology is adapted refined for specific requirements challenges multipath Then, illustrate advantages pitfalls method based on si...