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ETT
2002
94views Education» more  ETT 2002»
13 years 4 months ago
Transmit/Receive-antenna diversity techniques for OFDM systems
In this paper, we investigate different antenna diversity concepts, which can be easily applied to orthogonal frequency division multiplexing (OFDM) systems. The focus is on standa...
Armin Dammann, Stefan Kaiser
ETT
2000
103views Education» more  ETT 2000»
13 years 4 months ago
Analysis of Doppler Spread Perturbations in OFDM(A) Systems
We analyze the effects of Doppler spread in mobile channels on Orthogonal Frequency Division Multiplex (OFDM) systems. This is important, since channel variations during one OFDM s...
Patrick Robertson, Stefan Kaiser
ETT
2000
67views Education» more  ETT 2000»
13 years 4 months ago
Randomized OFDM for Multi-Cell Environments
: This paper is concerned with a randomized OFDM (R-OFDM) scheme. The basic principle is to apply a scrambling operation to several OFDM frames. With a proper design strategy, the ...
Li Ping
TWC
2008
126views more  TWC 2008»
13 years 4 months ago
Coherent and Differential ICI Cancellation for Mobile OFDM with Application to DVB-H
We develop a reduced-complexity hybrid frequency/time-domain orthogonal frequency division multiplexing (OFDM) channel estimation algorithm for high-mobility scenarios where the ch...
Sili Lu, Naofal Al-Dhahir
TWC
2008
133views more  TWC 2008»
13 years 4 months ago
Analytical results about the robustness of FMT modulation with several prototype pulses in time-frequency selective fading chann
In this paper we study the performance of Filtered Multitone (FMT) modulation systems in time-frequency selective fading channels. FMT generalizes the OFDM scheme through the deplo...
Andrea M. Tonello, Francesco Pecile
TCOM
2008
117views more  TCOM 2008»
13 years 4 months ago
Constant Envelope OFDM
This paper describes a transformation technique aimed at solving the peak-to-average power ratio (PAPR) problem associated with OFDM (orthogonal frequency-division multiplexing). C...
Steve C. Thompson, Ahsen U. Ahmed, John G. Proakis...
TCOM
2008
170views more  TCOM 2008»
13 years 4 months ago
Analysis and comparison of several simple impulsive noise mitigation schemes for OFDM receivers
A simple method of improving OFDM (orthogonal frequency division multiplexing) receiver performance in an impulsive noise environment is to precede a conventional OFDM demodulator...
S. V. Zhidkov
JCM
2006
92views more  JCM 2006»
13 years 4 months ago
Automatic Detection of the Guard Interval Length in OFDM System
Orthogonal Frequency Division Multiplexing (OFDM) has been increasingly used in wireless broadband communication systems. Guard interval (GI) is used in OFDM system to reduce inter...
Li Zou
JSAC
2008
125views more  JSAC 2008»
13 years 4 months ago
Nonbinary LDPC Coding for Multicarrier Underwater Acoustic Communication
Recently, multicarrier modulation in the form of orthogonal frequency division multiplexing (OFDM) has been shown feasible for underwater acoustic communications via effective algo...
Jie Huang, Shengli Zhou, Peter Willett
JSAC
2008
92views more  JSAC 2008»
13 years 4 months ago
Multiband OFDM for Covert Acoustic Communications
A multiband OFDM transmitter and receiver are presented for underwater communications at low SNR. Compared with a single-band OFDM scheme, the multiband approach leads to a conside...
Geert Leus, Paul A. van Walree