Results 111 to 120 of about 49,826 (236)

Evaluating the physical layer performance of an OFDM candidate for fourth generation networks

, 2002
In this paper, work performed under the framework of the IST SATURN project for wide area cellular OFDM is presented in the context of 4G networks.
Nix, AR, Doufexi, A, Armour, SMD, Beach, MA   +3 more
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OFDM for optical communications

, 2010
The first book on optical OFDM by the leading pioneers in the field The only book to cover error correction codes for optical OFDM Gives applications of OFDM to free-space communications, optical access networks, and metro and log haul transports show ...
Shieh, William, Djordjevic, Ivan., Shieh, William., Djordjevic, Ivan   +3 more
core  

MMSE Channel Prediction Assisted Symbol-by-Symbol Adaptive OFDM

, 2002
Subband Adaptive Orthogonal Frequency Division Multiplexing (OFDM) constitutes an effective method of compensating for the frequency selective fading incurred by mobile receivers.
Münster, M., Hanzo, L.
core  

Channel Estimation in OFDM Systems with Strong Interference

, 2010
In this paper, we investigate channel estimation algorithms in an OFDM system which is exposed to pulsed interference. It will be examined how the interference affects the performance of the channel estimation and how the channel estimation can be ...
Epple, Ulrich, Schnell, Michael
core  

Deep Learning Based Channel Estimation for UAVs: A Modified U-Net Approach

Advances in Electrical and Computer Engineering
A stable and reliable communication link is crucial for unmanned aerial vehicle (UAV) applications. Key challenges include the UAV's high mobility (10-100 km/h) and an unstable data link. Orthogonal frequency division multiplexing (OFDM) enables higher
GUPTA, C., YADAV, S. S.
doaj   +1 more source

Generic MMSE Decision Directed Channel Estimation for OFDM and MC-CDMA

, 2004
In this letter we propose a Minimum Mean Square Error (MMSE) Channel Impulse Response (CIR) estimator-aided Decision Directed Channel Estimation (DDCE) method, which is suitable for employment in both OFDM and MC-CDMA systems.
Akhtman, Jos, Hanzo, Lajos
core  

Orthogonal frequency division multiplexing (OFDM) in photonic communications

OFDM has emerged as a promising modulation technique in long-haul and access optical networks because of a number of advantages: Scalable spectrum partitioning, good spectral efficiency, dispersion tolerance, and a natural suitability for software ...
Vallaitis, T., Ellermeyer, T., Möller, M., Ben Ezra, S., Petropoulos, P., Schellinger, T., Hillerkuss, D., Weingarten, K., Freude, W., Schmogrow, R., Marculescu, A., Bonk, R., Meyer, J., Winter, M., Nebendahl, B., Dreschmann, M., Lutz, J., Parmigiani, F., Li, J., Resan, B., Narkiss, N.   +20 more
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Iterative Joint Channel Estimation and Symbol Detection for Multi-User MIMO OFDM

, 2006
Multiple-Input-Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems have recently attracted substantial research interest. However, compared to Single-Input-Single-Output (SISO) systems, channel estimation in the MIMO scenario
Jiang, M., Akhtman, J., Guo, F.C., Hanzo, L.   +3 more
core  

Iterative Joint Channel Estimation and Multi-User Detection for Multiple-Antenna Aided OFDM Systems

, 2007
Multiple-Input-Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems have recently attracted substantial research interest. However, compared to Single-Input-Single-Output (SISO) systems, channel estimation in the MIMO scenario
Akhtman, J, Jiang, M, Hanzo, L.
core  

Joint Channel Impulse Response and Noise-Variance Estimation for OFDM{\slash}SDMA Systems Based on Expectation Maximization

, 2010
A joint channel impulse response (CIR) and noise-variance estimation scheme is proposed for multi-user Multiple-Input-Multiple-Output (MIMO) Orthogonal Frequency-Division Multiplexing\,/\,Space Division Multiple Access (OFDM/SDMA) systems, which is based
Mu, Xiaomin, Hanzo, Lajos, Zhang, Jiankang   +2 more
core