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- Olivier Besson, Mounir Ghogho, Ananthram Swami
- IEEE Trans. Signal Processing
- 1999

— We consider the problem of estimating the parameters of a chirp signal observed in multiplicative noise, i.e., whose amplitude is randomly time-varying. Two methods for solving this problem are presented. First, an unstructured nonlinear least-squares approach (NLS) is proposed. It is shown that by minimizing the NLS criterion with respect to all samples… (More)

- Philippe Ciblat, Mounir Ghogho, Philippe Forster, Pascal Larzabal
- Signal Processing
- 2005

- Mounir Ghogho, Desmond C. McLernon, Enrique Alameda-Hernandez, Ananthram Swami
- IEEE Signal Processing Letters
- 2005

We address the problem of frequency-selective channel estimation and symbol detection using superimposed training. The superimposed training consists of the sum of a known sequence and a data-dependent sequence that is unknown to the receiver. The data-dependent sequence cancels the effects of the unknown data on channel estimation. The performance of the… (More)

- Mounir Ghogho, Ananthram Swami, Georgios B. Giannakis
- GLOBECOM
- 2001

We address the problem of frequency synchronization in OFDM-based communications systems in the context of frequency-selective fading channels. Frequency offsets are estimated by inserting null sub-carriers into a single OFDM block. The paper clarifies issues related to acquisition range and identifiability of carrier frequency offset (CFO), and performance… (More)

- Saleh O. Al-Jazzar, Mounir Ghogho, Desmond C. McLernon
- IEEE Trans. Vehicular Technology
- 2007

On limits of wireless communications in a fading environment when using multiple antennas, " Wirel. Pers. Layered space–time architecture for wireless communication in a fading environment when using multi-element antennas, " Bell Labs Tech. The finite-length multi-input multi-output MMSE-DFE, " IEEE Trans. turbo receiver space–time BICM over… (More)

- Mounir Ghogho, Ananthram Swami, Bernard Garel
- IEEE Trans. Signal Processing
- 1999

— The problem of estimating the frequencies of harmonics in multiplicative and additive noise is addressed. The cyclic mean (CM) can be used if the multiplicative noise has nonzero mean; the cyclic variance (CV) can be used whether or not the multiplicative noise has zero mean. This paper answers the following question: Under what conditions should we use… (More)

This paper addresses the problem of training design for frequency-selective channel and carrier frequency-offset (CFO) estimation in single- and multiple-antenna systems under different energy-distribution constraints. The performance metric used here is the Cramer-Rao bound (CRB). The paper first addresses the CFO-free case and then generalizes the results… (More)

- Mounir Ghogho, Ananthram Swami
- IEEE Communications Letters
- 2002

—We address the problem of carrier frequency offset (CFO) synchronization in OFDM communications systems in the context of frequency-selective fading channels. We consider the case where the transmitted symbols have constant modulus, i.e., PSK constellations. A novel blind CFO estimation algorithm is developed. The new algorithm is shown to greatly… (More)

- Jamila Bakkoury, Daniel Roviras, Mounir Ghogho, Francis Castanie
- Signal Processing
- 2000

This paper develops an adaptive maximum likelihood sequence estimator (MLSE) for rapidly fading channels corrupted by additive white Gaussian noise. This estimator is based on an explicit incorporation of the time-varying characteristics in channel modelling. When the multipath is caused by a few strong re#ectors, the channel is shown to be… (More)

- Timothy Whitworth, Mounir Ghogho, Desmond C. McLernon
- IEEE Trans. Wireless Communications
- 2009