symbol ofdm
RSS symbol ofdmLinearly Precoded or Coded OFDM Against Wireless Channel Fades?
White Paper But when the channel has nulls close to or on the FFT grid, OFDM faces serious symbol recovery problems. Orthogonal Frequency Division Multiplexing (OFDM) converts a dispersive channel... [10 Apr 2008]
Error Probability Minimizing Pilots for OFDM With M-PSK Modulation Over Rayleigh-Fading Channels
White Paper Orthogonal frequency division multiplexing (OFDM) with pilot symbol assisted channel estimation is a promising technique for high rate transmissions over wireless frequency-selective fading channels.... [10 Apr 2008]
Linear Constellation Precoding for OFDM With Maximum Multipath Diversity and Coding Gains
White Paper Orthogonal frequency-division multiplexing (OFDM) converts a frequency-selective fading channel into parallel flat-fading subchannels, thereby simplifying channel equalization and symbol decoding.... [10 Apr 2008]
Detection of OFDM-CPM Signals Over Multipath Channels
White Paper Canonical optimum and suboptimum multiple-symbol-observation OFDM-CPM receivers are derived. A class of Orthogonal Frequency Division Multiplexing - Continuous Phase Modulation... [10 Apr 2008]
A Decision Directed Receiver for Alamouti Coded OFDM Systems
White Paper When the Alamouti code is applied (as a space-time block code) to an OFDM system with transmit diversity, the simple Alamouti decoding requires that each subchannel is flat-fading and constant over two... [10 Apr 2008]
Robust Timing Synchronization for OFDM Based Wireless LAN System
White Paper The proposed method does frame detection using a threshold comparison mechanism and performs Orthogonal Frequency Division Multiplexing (OFDM) symbol boundary detection using correlation techniques. In... [10 Apr 2008]
An Integrated OFDM Receiver for High-Speed Mobile Data Communications
White Paper The effects of non-ideal transmission conditions of the OFDM system including channel estimation errors, symbol timing offset, carrier and sampling clock offset, phase noise and time-selective fading are... [10 Apr 2008]
On the Design of an FPGA-Based OFDM Modulator for IEEE 802.16-2004
White Paper Current and future communication schemes tend to use OFDM systems in order to provide high baud rates and less inter symbol interference. The work discussed in this paper presents the design, validation... [08 Jan 2008]
Kalman Tracking of Time-Varying Channels in Wireless MIMO-OFDM Systems
White Paper In this paper an extended Kalman filter technique for pilot symbol assisted MIMO-OFDM channel tracking is developed. The performance of coherent MIMO-OFDM systems critically depends on... [27 Jul 2007]
Inter-Carrier Interference Cancellation for OFDM Systems
White Paper This frequency offset introduces inter-carrier interference (ICI) in the OFDM symbol. Orthogonal Frequency Division Multiplexing (OFDM) is an emerging multi-carrier modulation scheme,... [27 Jul 2007]
VLSI Implementation of OFDM Modem
White Paper A set of orthogonal sub-carriers together forms an OFDM symbol. OFDM is a multi-carrier system where data bits are encoded to multiple sub-carriers, while being sent simultaneously. To... [25 Jun 2007]
Finite-Alphabet Based Channel Estimation for OFDM and Related Multicarrier Systems
White Paper The resulting algorithms are applicable not only to standard OFDM transmitters with cyclic prefix, but also to the recently proposed zero padded OFDM transmissions that improve symbol... [19 Apr 2007]
Joint Symbol Timing and Channel Estimation for OFDM Based WLANs
White Paper This paper considers the joint estimation of the symbol timing, the channel length and the channel-impulse response. The orthogonal frequency-division multiplexing access technique has recently been attracting... [18 Apr 2007]
An Efficient Frequency Offset Estimator for Timing and Frequency Synchronization in OFDM Systems
White Paper In this paper, by modifying a conventional method which requires two training symbols, the authors propose a timing and frequency synchronization algorithm for OFDM systems which requires one training... [18 Apr 2007]
Outage Probability Comparison of CP-OFDM and TDS-OFDM for Broadcast Channels
White Paper In this paper, TDS-OFDM and CP-OFDM for nonergodic broadcast inter-symbol-interference channels are compared from an information theoretical perspective. The Time Domain Synchronous... [18 Apr 2007]
