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Suppression of Strong Interference in UWB
2011 IEEE Global Telecommunications Conference - GLOBECOM 2011, 2011The 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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Narrowband interference suppression in OFDM systems
2016 8th International Conference on Wireless Communications & Signal Processing (WCSP), 2016This 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
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Interference suppression with minimal signal distortion
2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)., 2004We 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, 2002We 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
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Adaptive beamforming for coherent interference suppression
IEEE International Conference on Acoustics Speech and Signal Processing, 1993Adaptive 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
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Interference suppression of SRS
Quantum Electronics, 2011The theory of three-wave SRS is developed, which takes into account nonlinear dispersion of a medium for arbitrary phases of the pump waves at the input to the medium. The effect of interference suppression of SRS is predicted for values of the total phase of the three-wave pump (2n+1)π (n=0, ±1, ±2...), the effect being caused by the destructive ...
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Suppression of FM adjacent channel interference
ICASSP '84. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005Within 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
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Interference suppression in the presence of quantization errors
2009 47th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2009Multi-element antennas offer the possibility of increasing the spatial reuse of wireless spectrum by “nulling” out interfering signals. However, the interference suppression performance is highly sensitive to small errors in the gains applied to the antenna elements.
Omar Bakr +3 more
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Impact of Imperfections on Detectors for Interference Suppression
2010 IEEE Wireless Communication and Networking Conference, 2010In this paper, we carry out the performance analysis of recently proposed low complexity max log MAP detector for interference suppression under the realistic imperfections of correlation and non Gaussian alphabets. We also incorporate MMSE detector in our analysis taking into account non Gaussian alphabets however intricacy in the analysis of ...
Rizwan Ghaffar, Raymond Knopp
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Multipath Interference Suppression
2017Interferences on GNSS can be categorized into two types: intentional interference and unintentional interference. Jamming and spoofing, mainly discussed in Chaps. 2 and 4 in this book, belong to the category of intentional interference. Multipath interference studied in this chapter, and pulse interference that will be studied in Chap. 6 both belong to
Renbiao Wu +4 more
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