synchronization division multiplexing
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Performance Comparison of OFDM Carrier Synchronization Algorithms With Diversity
White Paper This paper compares the performances of Non Linear Least Squares (NLS) method and Maximum Likelihood Estimation (MLE) method used for carrier frequency synchronization in Orthogonal Frequency Division Multiplexing (OFDM) communication systems. [03 Jul 2008]
Performance Analysis of Diversity Combining Method for OFDM Blind Carrier Synchronization
White Paper Orthogonal Frequency Division Multiplexing (OFDM) communications transform frequency selective channels into multiple low rate subchannels robust against frequency selective fading. Carrier Frequency Offset (CFO) between transmitter and receiver... [03 Jul 2008]
Timing Synchronization in High Mobility OFDM Systems
White Paper The performance of OFDM systems, however, is sensitive to the performance of the timing synchronizer and channel estimator (in this paper, timing synchronization refers to the correct detection of the start of an OFDM symbol). [03 Jul 2008]
Physical Layer Implementation and Evaluation of Multiple Input Multiple Output - Orthogonal Frequency Division Multiplexing (MIMO-OFDM) System
White Paper The system has the key features of antenna diversity maximizing and fading-robustness with the preamble/pilots and frame structures, which are suitable for channel estimation, timing and frequency synchronization and unbiased signal-to-noise-plus... [03 Jul 2008]
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... [03 Jul 2008]
Low Cost Residual Phase Tracking Algorithm for OFDM-Based WLAN Systems
White Paper The focus is on mitigation of the residual frequency synchronization error and sampling frequency offset. This paper presents the design of an efficient low complexity orthogonal frequency division multiplexing receiver targeting wireless local... [03 Jul 2008]
Maximum Likelihood Synchronization for OFDM Using a Pilot Symbol: Analysis
White Paper A performance analysis of algorithms for maximum likelihood estimation of channel parameters for orthogonal frequency-division multiplexing packet detection and synchronization is presented. The detection and synchronization algorithms, which are... [03 Jul 2008]
Maximum Likelihood Synchronization for OFDM Using a Pilot Symbol: Algorithms
White Paper The design of a pilot symbol for orthogonal frequency-division multiplexing packet detection and synchronization is presented. Algorithms are described for packet detection and for synchronization using maximum likelihood estimation of channel... [03 Jul 2008]
ML Estimation of Timing and Frequency Offset Using Multiple OFDM Symbols in OFDM Systems
White Paper The proposed approach more greatly improves the estimation accuracy of synchronization parameters than the ML estimation in [10]. An approach of joint blind estimation of the symbol timing offset and carrier frequency offset using multiple... [03 Jul 2008]
Implementation of a MIMO OFDM Based Wireless LAN System
White Paper An overview is given of the necessary changes, including time and frequency synchronization, channel estimation, synchronization tracking and MIMO detection. The combination of Multiple-Input Multiple-Output (MIMO) signal processing with Orthogonal... [10 Apr 2008]
Robust Timing Synchronization for OFDM Based Wireless LAN System
White Paper In this paper, a robust and efficient frame detection and symbol timing synchronization technique suitable for IEEE 802.11a wireless LAN system is proposed. This algorithm is a novel combination of self and cross correlation information to achieve... [10 Apr 2008]
Implementation of a MIMO OFDM-Based Wireless LAN System
White Paper An overview is given of the necessary changes, including time and frequency synchronization, channel estimation, synchronization tracking, and MIMO detection. The combination of multiple-input multiple-output (MIMO) signal processing with... [10 Apr 2008]
A Space-Time Receiver for MIMO-OFDM Ad Hoc Networks
White Paper The receiver performs joint synchronization and interference cancellation to separate these interfering data streams and achieve synchronization for each stream. This paper proposes a receiver architecture that can demodulate multiple data streams... [26 Apr 2007]
Low Complexity Residual Phase Tracking Algorithm for OFDM-Based WLAN Systems
White Paper In this paper the focus is on mitigation of the residual carrier frequency synchronization offset and sampling frequency offset. This paper presents the design of an efficient low complexity residual phase tracking algorithm for Orthogonal... [18 Apr 2007]
An Efficient Frequency Offset Estimator for OFDM Systems and Its Performance Characteristics
White Paper This paper proposes new frequency synchronization algorithm for Orthogonal Frequency Division Multiplexing (OFDM) systems requiring only one training symbol, based on a conventional method which requires two training symbols. [14 Apr 2007]
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