Sciweavers

ICASSP
2011
IEEE
12 years 8 months ago
Generalized interior-point method for constrained peak power minimization of OFDM signals
In this paper we present two results on reducing the peak power of orthogonal frequency division multiplexing (OFDM) symbols via constellation extension (CE). The first result is...
Zhenhua Yu, Robert J. Baxley, G. Tong Zhou
ICASSP
2011
IEEE
12 years 8 months ago
Pilot optimization for time-delay and channel estimation in OFDM systems
Orthogonal frequency division multiplexing (OFDM) communication systems require accurate estimation of timing offset and channel impulse response in order to achieve desirable per...
Michael D. Larsen, Gonzalo Seco-Granados, A. Lee S...
ICASSP
2011
IEEE
12 years 8 months ago
Analog antenna combining in multiuser OFDM systems: Beamforming design and power allocation
The goal of this paper consists in characterizing the capacity region of a broadcast system based on analog antenna combining and orthogonal frequency division multiplexing (OFDM)...
Alfredo Nazábal, Javier Vía
ICASSP
2011
IEEE
12 years 8 months ago
Interference cancellation for OFDM systems with hierarchical modulation over non-linear satellite channels
This paper presents an efficient technique to eliminate the inter-layer interference (ILI) inherent in hierarchical modulation (HM) schemes operating over nonlinear satellite cha...
Emad Q. Al-Dalakta, Charalampos C. Tsimenidis, Bay...
TWC
2010
12 years 11 months ago
A PAPR Reduction Method Based on Artificial Bee Colony Algorithm for OFDM Signals
Abstract--One of the major drawbacks of orthogonal frequency division multiplexing (OFDM) signals is the high peak to average power ratio (PAPR) of the transmitted signal. Many PAP...
Yajun Wang, Wen Chen, Chintha Tellambura
EJWCN
2010
131views more  EJWCN 2010»
12 years 11 months ago
The Waterfilling Game-Theoretical Framework for Distributed Wireless Network Information Flow
We present a general game-theoretical framework for the resource allocation problem in the downlink scenario of distributed wireless small-cell networks, where multiple access poi...
Gaoning He, Laura Cottatellucci, Mérouane D...
CORR
2011
Springer
191views Education» more  CORR 2011»
12 years 11 months ago
A Message-Passing Receiver for BICM-OFDM over Unknown Clustered-Sparse Channels
We propose a factor-graph-based approach to joint channel-estimationand-decoding of bit-interleaved coded orthogonal frequency division multiplexing (BICM-OFDM). In contrast to ex...
Philip Schniter
IAJIT
2010
147views more  IAJIT 2010»
13 years 1 months ago
A novel radon-wavelet based OFDM system design and performance under different channel conditions
: Finite Radon Transform mapper has the ability to increase orthogonality of sub-carriers, it is non sensitive to channel parameters variations, and has a small constellation energ...
Abbas Hasan Kattoush
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
TWC
2008
77views more  TWC 2008»
13 years 4 months ago
Preamble-based cell identification for cellular OFDM systems
Preamble-based cell identification (CID) schemes are derived for orthogonal frequency division multiplexing (OFDM) systems. They include the optimal schemes based on the Bayesian a...
Wooseok Nam, Yong Hoon Lee