• Publications
  • Influence
A comparison of SNR estimation techniques for the AWGN channel
The performances of several signal-to noise ratio (SNR) estimation techniques reported in the literature are compared to identify the "best" estimator. Expand
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Autoregressive modeling for fading channel simulation
Autoregressive stochastic models for the computer simulation of correlated Rayleigh fading processes are investigated. Expand
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Reduced ICI in OFDM systems using the "better than" raised-cosine pulse
A recently found "better than" raised-cosine pulse is employed in pulse-shaping orthogonal frequency-division multiplexing to reduce the inter-carrier interference due to frequency offset. Expand
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The generation of correlated Rayleigh random variates by inverse discrete Fourier transform
This paper presents an analysis of the statistical properties of methods based on the inverse discrete Fourier transform (IDFT). Expand
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A "better than" Nyquist pulse
A novel ISI-free pulse is presented that has smaller maximum distortion, a more open receiver eye, and a smaller probability of error in the presence of symbol timing error than the Nyquist pulse for the same excess bandwidth. Expand
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On first-order Markov modeling for the Rayleigh fading channel
First-order Markov chains are not suitable for very slowly fading flat-fading channels, but can be suitable for short duration of time applications. Expand
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An optimal lognormal approximation to lognormal sum distributions
  • N. Beaulieu, Q. Xie
  • Mathematics, Computer Science
  • IEEE Transactions on Vehicular Technology
  • 22 March 2004
A new paradigm for approximating the distributions of lognormal sums was given in this paper; it is simple and, in some sense, optimal. Expand
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Accurate evaluation of multiple-access performance in TH-PPM and TH-BPSK UWB systems
  • B. Hu, N. Beaulieu
  • Computer Science, Mathematics
  • IEEE Transactions on Communications
  • 1 November 2004
A characteristic function method is proposed for precisely calculating the bit-error probability of time-hopping (TH) ultra-wideband (UWB) systems with multiple-access interference in an additive white Gaussian noise environment. Expand
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Outage probabilities in the presence of correlated lognormal interferers
Several approaches that can be used to compute the distribution of a sum of correlated lognormal random variables (RVs) are investigated. Specifically, Wilkinson's approach (Schwartz and Yeh, 1982),Expand
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Resource Allocation in Spectrum-Sharing OFDMA Femtocells With Heterogeneous Services
Femtocells are being considered a promising technique to improve the capacity and coverage for indoor wireless users. Expand
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