Blind Principles Based Interference and Noise Reduction Schemes for OFDM
نویسندگان
چکیده
منابع مشابه
ML-Based Blind Frequency Offset Estimation Schemes for OFDM Systems in Non-Gaussian Noise Environments
This paper proposes frequency offset (FO) estimation schemes robust to the non-Gaussian noise for orthogonal frequency division multiplexing (OFDM) systems. A maximum-likelihood (ML) scheme and a low-complexity estimation scheme are proposed by applying the probability density function of the cyclic prefix of OFDM symbols to the ML criterion. From simulation results, it is confirmed that the pr...
متن کاملNew ICI reduction schemes for OFDM system
AbstruclOrthogonal Frequency Division Multiplexing (OFDM) is sensitive to the carrier frequency offset (CFO). We introduce the Peak Interference-to-Carrier Ratio (PICR) to measure the resulting intercarrier interference (ICI). This paper shows that the PICR can be reduced by coding to select only those messages with low PICR as valid codewords. While explicit constructions of higher-rate, ICI-s...
متن کاملA New Eigenpair Based Beamformingmethod for Interference and Noise Reduction
In this paper, we introduce a generalized principal component (GPC) beamforming technique that allows a tradeoff between interference and noise reduction via the introduction of a control parameter, . With analytical studies and computer simulation we compare the robustness of the GPC beamforming and conventional beamforming against calibration and/or pointing errors.
متن کاملNoise Reduction for Optical OFDM Channel Estimation
I N recent years, Orthogonal Frequency Division Multiplexing (OFDM) has been proposed for optical long-haul communications due to the ease of equalization of the dispersiongoverned fiber optical channel [1]. The approaches pursued can be distinguished into two groups: First, there are coherent optical systems which use quadrature modulation at the transmitter and zero-IF (Intermediate Frequency...
متن کاملAn Efficient Inter Carrier Interference Cancellation Schemes for OFDM Systems
Orthogonal Frequency Division Multiplexing (OFDM) has recently been used widely in wireless communication systems. OFDM is very effective in combating inter-symbol interference and can achieve high data rate in frequency selective channel. For OFDM communication systems, the frequency offsets in mobile radio channels distort the orthogonality between subcarriers resulting in Inter Carrier Inter...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Wireless Personal Communications
سال: 2012
ISSN: 0929-6212,1572-834X
DOI: 10.1007/s11277-012-0897-7