Results 251 to 260 of about 159,032 (295)

Sensing and suppression of impulsive interference

2009 Canadian Conference on Electrical and Computer Engineering, 2009
Cognitive radios are slated to be the next generation of smart transceivers that can dynamically sense and respond to its immediate radio frequency (RF) environment. It is highly likely that the RF environment will vary with time as various interferers come and go out of the range of the target receiver.
Jeebak Mitra, Lutz H.-J. Lampe
openaire   +1 more source

Enhanced interference whitening for co-channel interference suppression

2013 IEEE Wireless Communications and Networking Conference (WCNC), 2013
The co-channel interference (CCI) has become a major throughput-limiting factor for cell-edge users in the modern cellular systems such as the Long Term Evolution (LTE) network. Spatial interference whitening (IW) is an effective low-complexity linear method to suppress colored spatial interference in a MIMO setup.
Yingqun Yu, Jungwon Lee, Inyup Kang
openaire   +1 more source

Interference Suppression in Synthesized SAR Images

IEEE Geoscience and Remote Sensing Letters, 2005
Radio interferences are becoming more and more an important source for image degradation in synthetic aperture radar (SAR) imaging. Especially at longer wavelengths, interferences are often very strong, and their suppression is required during data processing.
Reigber, Andreas, Ferro-Famil, Laurent
openaire   +2 more sources

Residual interference suppression in parallel interference cancellation receivers

1999 IEEE International Conference on Communications (Cat. No. 99CH36311), 2003
Parallel interference cancellation (PIC) receivers are among the most promising receiver techniques for future code-division multiple-access (CDMA) systems. Interference cancellation efficiency relies on the knowledge of the number of users and propagation paths needed in multiple-access interference (MAI) estimation.
Matti Latva-aho, Markku J. Juntti, Kimmo Kansanen   +2 more
openaire   +1 more source

Narrowband interference suppression in OFDM systems

2016 8th International Conference on Wireless Communications & Signal Processing (WCSP), 2016
This paper proposes an efficient frequency domain interference cancellation algorithm to solve the narrowband interference (NBI) problem for OFDM systems. The multi-tone NBI is estimated, reconstructed and removed from the transmitted signals. To achieve a more accurate estimation of coarse interference frequency, a novel spectrum peak search scheme ...
Hengyao Wang, Xiaoying Zhang, Shan Wang
openaire   +1 more source

Suppression of Strong Interference in UWB

2011 IEEE Global Telecommunications Conference - GLOBECOM 2011, 2011
The large bandwidth and low power level of ultra- wide-band make it susceptible to interference. Especially in a cell phone the interference levels are very high. Therefore cell phone integration of UWB receivers requires strong interference suppression. In this paper we use realistic models of interferers present in a cell phone. These models are used
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Interference suppression with minimal signal distortion

2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)., 2004
We propose a two-stage adaptive filtering process for canceling narrowband interference from a wideband signal process, based on a reference signal consisting of a Doppler shifted version of the interference. The first stage uses the time-varying behavior of NLMS with large step-size to produce an estimate of the interference signal, in which the ...
A. A. (Louis) Beex, James R. Zeidler
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Adaptive interference suppression for DS-CDMA

IEEE Transactions on Communications, 2002
We propose an adaptive scheme to reject multiuser interference using as little as 20-30 taps in direct-sequence code-division multiple-access systems employing arbitrary processing gains (31-400 considered here). We demonstrate that our receiver using this scheme does not require training signals, either initially when the desired user powers on in the
Rahul Singh, Laurence B. Milstein
openaire   +1 more source

Adaptive beamforming for coherent interference suppression

IEEE International Conference on Acoustics Speech and Signal Processing, 1993
Adaptive beamforming in a coherent interference environment is considered. An eigenanalysis based two-step adaptive method is proposed for uniform linear arrays. In the first step, an optimum subarray weight vector is obtained via eigenanalysis techniques.
Ming Lu, Zheng-ya He
openaire   +2 more sources

Suppression of FM adjacent channel interference

ICASSP '84. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005
Within current RF allocations, increases in communication traffic have resulted in a trend toward spectral crowding. Effects of adjacent channel interference have traditionally been minimized by geographically isolating channel assignments, or by over-spacing channel centers, inefficiencies which will be unacceptable for future needs.
Michael G. Larimore, John R. Treichler
openaire   +1 more source