channel impulse
RSS channel impulseSort by: Relevance | Date
On Cyclic Delay Diversity in OFDM Based Transmission Schemes
White Paper But in contrast to that there is no additional effort in the receiver necessary, since the different codewords result in a changed channel impulse response in the receiver. Cyclic Delay Diversity (CDD)... [25 Mar 2008]
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... [18 Apr 2007]
Channel Modeling and Associated Inter-Carrier Interference Equalization for OFDM Systems With High Doppler Spread
White Paper On the one hand, this leads to a fairly parsimonious parameterization of the time-varying channel impulse response. This paper addresses the problem of OFDM transmission over a time-varying,... [18 Apr 2007]
Performance of Coherent Impulse Radio and Multiband-OFDM on IEEE UWB Channels
White Paper This paper presents the performance of single band impulse radio systems, TH-UWB and DS-UWB, multiband impulse radio systems, MB-UWB, and multiband OFDM systems on the IEEE 802.15 UWB... [14 Apr 2007]
Joint Channel and Frequency Offset Estimation for OFDM Systems
White Paper The time variation of the effective Channel Impulse Response (CIR) due to frequency o set is tracked using a channel tracker. In this paper, a joint channel and... [13 Apr 2007]
Estimation of Frequency Selectivity for OFDM Based New Generation Wireless Communication Systems
White Paper Time domain channel impulse response is obtained by taking Inverse Fast Fourier Transform (IFFT) of the sampled channel frequency response. In this paper, estimation of both global (long... [13 Apr 2007]
Doppler Spread Estimation for Wireless OFDM Systems
White Paper The Channel Impulse Response (CIR) can be obtained by taking IDFT of the Channel Frequency Response (CFR). The estimation is based on finding the autocorrelation function of time domain... [13 Apr 2007]
Efficient Detection of Zero-Padded OFDM Signals With Large Blocks
White Paper This paper presents a frequency-domain receiver for ZP-OFDM schemes (Zero-Padded Orthogonal Frequency Division Multiplexing) where the duration of the channel impulse response is a significant fraction... [11 Apr 2007]
Symbol Timing for Multiple Antenna OFDM Systems
White Paper This paper proposes different timing approaches for MIMO OFDM systems, which apply knowledge about the channel impulse response. Accurate symbol timing in Multiple-Input Multiple-Output (MIMO) OFDM... [11 Apr 2007]
OFDM Channel Estimation in the Presence of Interference Using the Estimated Generalized Least-Squares Method
White Paper A pilot-aided method for estimating a channel impulse response in orthogonal frequency division multiplex wireless systems is presented. In this scenario the received signal, in addition to undergoing... [26 Jul 2005]
Performance of an Infrared Wireless CDMA System
White Paper According to the simulation a BER of 10-7 can be achieved with a moderate bit rate when, the channel impulse response exponentially decays. This paper evaluates the performance of a direct spread CDMA... [26 Jul 2005]
A Low Complexity ML Channel Estimator for OFDM
White Paper Expressing this correlation by the finite delay spread, the authors build a deterministic model parametrized by the channel impulse response and, based on this model, derive the Maximum Likelihood (ML)... [26 Jul 2005]
Space-Time Block-Coded Multiple Access Through Frequency-Selective Fading Channels
Single-user ST coded orthogonal frequency-division multiplexing transmissions over frequency-selective channels suffer from finite-impulse response channel nulls (fades). Mitigation of multipath fading... [30 Mar 2005]
Intercarrier and Intersymbol Interference Analysis of OFDM Systems on Time-Invariant Channels
White Paper In order to derive the mathematical description of interference and useful power in the case of insufficient guard length of an OFDM system, the channel impulse response is truncated in mathematical... [29 Oct 2004]
Intercarrier and Intersymbol Interference Analysis of OFDM Systems on Time-Varying Channels
White Paper This was carried out by truncating the channel impulse response (CIR) in mathematical analysis into two parts, the so-called truncated channels. In intersymbol interference (ISI) and intercarrier... [29 Oct 2004]
