Results 141 to 150 of about 1,418 (179)
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FBMC/OQAM Transceiver for Ultralarge Bandwidths
2020 IEEE 5th International Symposium on Telecommunication Technologies (ISTT), 2020We consider the problem of the downlink transceiver design when it needs to operate in an ultralarge analog bandwidth; more specifically, we propose to use the FBMC/OQAM system in a scenario where many other multicarrier transceivers are not able to operate.
Mattera D., Tanda M.
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FBMC/OQAM Modulators with Half Complexity
2011 IEEE Global Telecommunications Conference - GLOBECOM 2011, 2011The Filter Bank MultiCarrier (FMBC) concept can be seen as an extension of the Orthogonal Frequency Division Multiplex (OFDM) principle. Indeed, in the case where each sub-carrier uses an Offset Quadrature Amplitude Modulation (OQAM), we get with the FBMC/OQAM system a multicarrier modulation scheme with relaxed orthogonality constraints so that ...
Youssef Dandach, Pierre Siohan
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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 A. 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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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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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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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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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, Xiqi Gao, Tao Jiang
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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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