Results 141 to 150 of about 2,392 (179)
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Interference cancellation in coded OFDM/OQAM
2012 International Symposium on Wireless Communication Systems (ISWCS), 2012This paper addresses the concatenation of a convolutional code and COFDM/OQAM modulation transmitted over a time-dispersive radio channel. The proposed receiver is composed of a suitable OFDM/OQAM filter-bank demodulator, followed by an intersymbol and inter(-subchannel) interferences canceller and a SISO (Soft Input - Soft Output) decoder put in Turbo-
Mohamad Aoude +2 more
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PAPR reduction using OQAM for spectrum sensing
International Journal of Pervasive Computing and Communications, 2020Purpose The tremendous growth of wireless applications and the demand for high data rate, the spectrum utilization improvement has been the most crucial challenges for wireless communication. Adapting cognitive radio with orthogonal frequency division multiplexing or offset quadrature amplitude modulation (OFDM ...
Renuka N., Satya Sairam M.
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Blind Cfo Estimation for OFDM/OQAM Systems
2006 IEEE International Conference on Acoustics Speed and Signal Processing Proceedings, 2006In this paper we investigate the problem of blind carrier frequency offset (CFO) estimation in orthogonal frequency division multiplexing systems based on offset QAM. Specifically, by modeling the received signal as a complex Gaussian random vector and under the hypothesis of a non dispersive channel, we derive the unconditional maximum likelihood CFO ...
FUSCO, TILDE, TANDA, MARIO
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Channel Estimation in CP-OQAM-OFDM Systems
IEEE Transactions on Signal Processing, 2014Due to the insertion of cyclic prefix (CP), orthogonal-frequency-division multiplexing (OFDM) systems with offset quadrature amplitude modulation (OQAM) (OQAM-OFDM) and CP, denoted as CP-OQAM-OFDM, systems have more robustness to combat a multi-path fading channel and simpler and better receivers than the conventional OQAM-OFDM systems.
Dejin Kong, Xiang-Gen Xia, Tao Jiang
exaly +2 more sources
Weighted circularly convolved filtering in OFDM/OQAM
2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2013A novel technique for removing the edge time transitions, a.k.a. tails, as well as the half symbol offset overhead of OFDM/OQAM signal is proposed. The proposed technique, which is called weighted circular convolution, totally removes the signal overheads, while preserving the real-orthogonality of the prototype filter, and as such, does not incur any ...
Mohammad Javad Abdoli +2 more
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Data-aided synchronization for OFDM/OQAM systems
Signal Processing, 2012The paper deals with the problem of preamble-based synchronization for OFDM/OQAM systems. Specifically, by exploiting the conjugate-symmetry property of a recently proposed preamble structure, a simple and robust procedure for timing and CFO synchronization is proposed.
Davide Mattera, Mario Tanda
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Synthesis of bandwidth efficient OQAM and VSB transmultiplexers
International Conference on Acoustics, Speech, and Signal Processing, 2002A set of conditions which allow bandwidth efficient transmultiplexers to be synthesized is developed. The synthesis procedure is based on a generalized impulse response for the combining (modulating) and separation (demodulating) filters. In particular, the combining and separation filters are bandpass versions of one or two lowpass prototypes and are ...
Ravi Prakash Ramachandran, Peter Kabal
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On the Uplink Spectral Efficiency of the FBMC-OQAM Transceiver
2019 16th International Symposium on Wireless Communication Systems (ISWCS), 2019The analysis of the spectral efficiency that can be achieved by using the FBMC-OQAM transceiver in the uplink of the modern wireless networks is carried out. Such efficiency is studied in a scenario where the limitations are introduced by interferences due to the multiple access scenario, rather than by the presence of hostile wireless channels.
Mattera, Davide, Tanda, Mario
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OFDM/OQAM for Spread-Spectrum Transmission
2007We propose an alternative to the well-known MC-CDMA technique for downlink transmission by replacing the conventional cyclic-prefix OFDM modulation by an advanced filterbank-based multicarrier system (OFDM/OQAM). Indeed, in one hand, MC-CDMA has already proved its ability to fight against frequency selective channels thanks to the use of the OFDM ...
Chrislin Lélé +3 more
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Compensation of Phase Noise in OFDM/OQAM Systems
2017 IEEE 86th Vehicular Technology Conference (VTC-Fall), 2017We propose a time-domain phase noise (PN) compensation scheme for orthogonal frequency division multiplexing with offset quadrature amplitude modulation (OFDM/OQAM) systems. The proposed scheme fully explores the unique overlapped signal structure of OFDM/OQAM to perform symbol-wise phase noise approximation using discrete cosine transform basis ...
Kengo Ikeuchi +2 more
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