multiple systems orthogonal frequency
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Interpolation-Based Multi-Mode Precoding for MIMO-OFDM Systems
White Paper Spatial multiplexing with multi-mode precoding provides a means to achieve both high capacity and high reliability in Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems. [09 Aug 2008]
On Implementation of Bit-Loading Algorithms for OFDM Systems With Multiple-Input Multiple-Output
White Paper A new implementation scheme for bit-loading algorithms is discussed for orthogonal frequency division multiplexing (OFDM) system with multiple-input multiple-output (MIMO) over wireless transmission channel. [03 Jul 2008]
Optimal Space-Frequency Group Codes for MIMO-OFDM System
White Paper Space-Frequency (SF) group codes are designed for Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems. A rather general channel model is assumed, where the channel is frequency-selective Rayleigh fading... [03 Jul 2008]
Experimental Studies on Optimal Space-Frequency Codes for MIMO-OFDM Systems
White Paper This paper tests the performance of optimal Space-Frequency Code (SFC) in Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) communication system on Stevens Wireless Testbed. [03 Jul 2008]
Antenna Selection for Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing Systems
White Paper This paper addresses the problem of transmit antenna selection for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems employing spatial multiplexing. The capacity of a wireless communication system can be... [03 Jul 2008]
Channel Estimation for OFDM Systems With Multiple Transmit Antennas by Filtering in Time and Frequency
White Paper This paper addresses pilot-symbol aided channel estimation (PACE) for orthogonal frequency division multiplexing (OFDM) based systems, with multiple transmit antennas. An approach is presented which estimates and separates NT superimposed signals... [03 Jul 2008]
High Data Rate MIMO-OFDM System With Orthogonal Delay Diversity Realization
White Paper A high rate delayed space-frequency cyclic group code is proposed in this paper, which applies a new bandwidth and power-efficient space-frequency processing on the orthogonal-frequency-division-multiplexing (OFDM) system. [03 Jul 2008]
An Adaptive/Reconfigurable Space-Time Coded OFDM Modem for Broadband Fixed Wireless Access: The STINGRAY Project
White Paper In the framework of the fifth European Community R&D program, the STINGRAY IST-2000-30173 project has proposed a novel adaptive and re-configurable Space-Time-Coded Orthogonal Frequency Division Multiplexing (STC-OFDM) modem architecture for... [03 Jul 2008]
Blind Carrier Offset Estimation for MIMO OFDM Systems: Cramer Rao Bound and Nonlear Least Squares
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 between transmitter and receiver local... [03 Jul 2008]
Channel Estimation for OFDM Systems With Multiple Transmit Antennas by Exploiting the Properties of the Discrete Fourier Transform
White Paper Multi-carrier modulation, in particular orthogonal division frequency multiplexing (OFDM), has been successfully applied to a wide variety of digital communications systems over the past several years. [03 Jul 2008]
Optimal Training Design for MIMO OFDM Systems in Mobile Wireless Channels
White Paper This paper describes a least squares (LS) channel estimation scheme for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems based on pilot tones. It is shown that the optimal pilot sequences are... [03 Jul 2008]
Frequency-Domain Interference Cancellation for MIMO-OFDM Systems
White Paper This paper proposes a new interference cancellation scheme for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems in the presence of intersymbol interference (ISI). [03 Jul 2008]
Performance of MIMO Antenna Selection for Space-Time Coded OFDM Systems
White Paper This paper studies antenna selection for space-time coded orthogonal frequency division multiplexing (OFDM) systems that employ multiple transmit and receive antennas. It is assumed that the channel state information (CSI) is exactly known at the... [03 Jul 2008]
Space-Time Bit-Interleaved Coded Modulation for OFDM Systems in Wireless LAN Applications
White Paper By using Orthogonal Frequency Division Multiplexing (OFDM), wideband transmission can be achieved over frequency selective fading radio channels. Space-Time coding techniques are methods to improve transmission efficiency in radio channels by using... [03 Jul 2008]
Space-Time Bit-Interleaved Coded Modulation for OFDM Systems
White Paper By using orthogonal frequency division multiplexing (OFDM), wideband transmission can be achieved over frequency-selective fading radio channels without adaptive equalizers. Space-time coding techniques significantly improve transmission efficiency... [03 Jul 2008]
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