transform mimo-ofdm
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Compress-and-Forward Cooperative Relaying in MIMO-OFDM Systems
White Paper In the evaluation it considers MIMO-OFDM transmission. This paper extends this Wyner-Ziv bound to MIMO-OFDM, by applying results from Bayesian vector estimation and rate-distortion coding theory. Then the authors derive the mutual information of a... [11 Apr 2008]
Per-Tone Equalization for MIMO-OFDM Systems
White Paper By swapping the filtering operations of the MIMO channel and the Fast Fourier Transform (FFT), it is shown that each tone of a MIMO OFDM system can be viewed as a MIMO Single-Carrier (SC) system. This paper focuses on Multiple-Input Multiple-Output... [18 Apr 2007]
Optimal Training Signals for MIMO OFDM Channel Estimation
White Paper This paper presents general classes of optimal training signals for the estimation of frequency-selective channels in MIMO OFDM systems. Both single and multiple OFDM training symbols are considered. Basic properties of the discrete Fourier... [13 Apr 2007]
Algorithms for Quantized Precoding in MIMO OFDM Beamforming Systems
White Paper In this paper, Orthogonal Frequency Division Multiplexing (OFDM) is considered as a low complexity implementation of MIMO beamforming combining over frequency selective channels. Multiple Input Multiple Output (MIMO) wireless systems can offer... [11 Apr 2007]
Algorithms for Quantized Precoded MIMO-OFDM Systems
White Paper In this paper, OFDM is considered as an implementation of linearly precoded MIMO spatial multiplexing systems over frequency selective channels. The knowledge of the wireless channel is crucial for realizing the capacity and diversity gains of a... [11 Apr 2007]
Channel Estimation for OFDM Systems With Multiple Transmit Antennas by Exploiting the Properties of the Discrete Fourier Transform
White Paper This paper addresses channel estimation based on the discrete Fourier transform (DFT) applied to OFDM-based MIMO systems. By exploiting the properties of the DFT, channel estimation schemes for MIMO-OFDM system can be simplified. [26 Jul 2005]
MIMO-OFDM With Code-Division Multiplexing for V-BLAST Receivers
White Paper In this paper orthogonal frequency-division multiplexing code-division multiplexing (OFDM-CDM) is extended to multiple-input multiple-output (MIMO) systems and a detection scheme called a space-frequency unified vertical-Bell Labs layered space... [26 Jul 2005]
Blind Carrier Offset Estimation for MIMO OFDM Systems: Cramer Rao Bound and Nonlear Least Squares
White Paper This paper presents the nonlinear least squares (NLS) estimator which exploits Multi Input Multi Output (MIMO) diversity for carrier frequency synchronization. Orthogonal Frequency Division Multiplexing (OFDM) communications transform frequency... [26 Jul 2005]
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