Journal ArticleDOI
Performance of RAKE reception in dense multipath channels: implications of spreading bandwidth and selection diversity order
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TLDR
An analytical framework to quantify the effects of the spreading bandwidth (BW) on spread spectrum systems operating in dense multipath environments in terms of the receiver performance, the receiver complexity, and the multipath channel parameters is developed.Abstract:
We develop an analytical framework to quantify the effects of the spreading bandwidth (BW) on spread spectrum systems operating in dense multipath environments in terms of the receiver performance, the receiver complexity, and the multipath channel parameters. The focus of the paper is to characterize the symbol error probability (SEP) performance of a RAKE receiver tracking the L strongest multipath components in wide-sense stationary uncorrelated scattering (WSSUS) Gaussian channels with frequency-selective fading. Analytical SEP expressions of the RAKE receiver are derived in terms of the number of combined paths, the spreading BW and the multipath spread of the channel. The proposed problem is made analytically tractable by transforming the physical RAKE paths, which are correlated and ordered, into the domain of a "virtual RAKE" receiver with independent virtual paths. This results in a simple derivation of the SEP for a given spreading BW and an arbitrary number of combined paths.read more
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Ultra-wideband communications: an idea whose time has come
TL;DR: This tutorial overviews the state-of-the-art UWB in channel modeling, transmitters, and receivers of UWB radios, and outlines the research directions and challenges that needs to be overcome.
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The ultra-wide bandwidth indoor channel: from statistical model to simulations
TL;DR: A statistical model for the ultra-wide bandwidth (UWB) indoor channel is established based on an extensive measurement campaign in a typical modern office building with 2-ns delay resolution and it is found that the correlation between multipath components is negligible.
Journal ArticleDOI
A Comprehensive Standardized Model for Ultrawideband Propagation Channels
Andreas F. Molisch,Dajana Cassioli,Chia-Chin Chong,S. Emami,A. Fort,B. Kannan,Johan Kåredal,J. Kunisch,H.G. Schantz,K. Siwiak,Moe Z. Win +10 more
TL;DR: A comprehensive statistical model is described for ultrawideband propagation channels that is valid for a frequency range from 3-10 GHz, and a critical assessment of the applicability of the model and possible generalizations and improvements is presented.
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Fundamental Limits of Wideband Localization— Part I: A General Framework
Yuan Shen,Moe Z. Win +1 more
TL;DR: This paper characterize localization accuracy in terms of a performance measure called the squared position error bound (SPEB), and introduces the notion of equivalent Fisher information (EFI) to derive the SPEB in a succinct expression.
Journal ArticleDOI
Characterization of ultra-wide bandwidth wireless indoor channels: a communication-theoretic view
Moe Z. Win,Robert A. Scholtz +1 more
TL;DR: Bit-error-probability performance of a UWB SRAKE receiver, based on measured channels, is given as a function of the signal-to-noise ratio and the number of correlators implemented in the receiver.
References
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Digital communications
TL;DR: This month's guest columnist, Steve Bible, N7HPR, is completing a master’s degree in computer science at the Naval Postgraduate School in Monterey, California, and his research area closely follows his interest in amateur radio.
Book
Shift register sequences
TL;DR: The Revised Edition of Shift Register Sequences contains a comprehensive bibliography of some 400 entries which cover the literature concerning the theory and applications of shift register sequences.
Journal ArticleDOI
Characterization of Randomly Time-Variant Linear Channels
TL;DR: Several new canonical channel models are derived in this paper, some of which are dual to those of Kailath, and a model called the Quasi-WSSUS channel is presented to model the behavior of such channels.
Book
The mobile radio propagation channel
TL;DR: In this paper, the basic VHF and UHF propagation propagation propagation over irregular terrain propagation in built-up areas area coverage and planning tools characterisation of multipath phenomena wideband channel characterisation other mobile radio channels and methods of characterisation sounding sampling and simulation man-made noise and interference multipath mitigation techniques
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