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Adaptive channel estimation for MIMO space-time coded communications

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MIMO OFDM receivers for Systems with IQ imbalances

Ali H. Sayed

Orthogonal frequency division multiplexing (OFDM) is a widely recognized modulation scheme for high data rate communications. However, the implementation of OFDM-based systems suffers from in-phase and quadrature-phase (IQ) imbalances in the front-end anal ...

IEEE2005

Efficient error correction solutions for OFDM based digital video

Mauro Lattuada

The robustness of the delivery of digital compressed video streams has always been one of the main topic of the standardization bodies to assure the Quality of the Service (QoS). The MPEG standard which is nowadays the reference for digital television defi ...

EPFL2005

A divide-and-conquer algorithm for channel estimation in multi-user space-time coded transmissions

Ali H. Sayed

We develop channel estimation techniques for multiple-input multiple-output (MIMO) channels that employ space-time block-coded (STBC) transmissions. We derive the MMSE channel estimator for multi-user Alamouti STBC transmissions over both flat fading and f ...

2004

MIMO space-time block coded receivers over frequency selective fading channels

Ali H. Sayed

We develop an adaptive receiver for multiple-input multiple-output (MIMO) frequency selective channels that employ space-time block-coded transmissions with cyclic prefixing. The receiver performs both interference suppression and equalization for multiuse ...

IEEE2004

Adaptive Channel Estimation for Space-Time Block Coded MIMO--OFDM Communications

Ali H. Sayed

We develop adaptive channel estimation techniques for space–time block–coded (STBC) multiple–input multiple–output (MIMO) orthogonal frequency division multiplexing (OFDM) communications. The structure of the space–time code is exploited to lower the compl ...

2004

Optimal Estimator-Detector Receivers for Space-Time Block Coding

Olivier Roy

Most space-time coding schemes can be classified either as non-coherent (decoding is performed without forming an explicit channel estimate) or coherent (decoding is performed conditioned upon a channel estimate as if it were the actual channel realisation ...

2004

Optimal Estimator-Detector Receivers for Space-Time Block Coding

Olivier Roy

2004

RAYLEIGH FADING MULTIPLE ACCESS CHANNEL WITHOUT CHANNEL STATE INFORMATION

Ninoslav Marina

In this paper we determine bounds of the capacity region of a two-user multiple-access channel with Rayleigh fading when neither the transmitters nor the receiver has channel state information (CSI). We assume that the fading coefficients as well as the ad ...

2004

Rayleigh Fading Multiple Access Channel without Channel State Information

Ninoslav Marina

2004

Exploiting spatio-temporal correlation for rate-efficient transmit beamforming

Ali H. Sayed

With multiple antennas at the transmitter, either space-time block coding or beamforming can be used as the transmission scheme depending on the availability of channel state information at the transmitter. Although beamforming can provide superior perform ...

IEEE2004