Analysis of Self Interference in a Basic FBMC System

Sriyananda, M. G. S.; Rajatheva, Nandana

doi:10.1109/vtcfall.2013.6692102

Cited by 10 publications

(7 citation statements)

References 18 publications

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“…This analysis led to a new simple and efficient equalizer utilizing this correlation. Also in [16], an analysis on intrinsic interference of a causal multirate OFDM/OQAM systems is conducted. These findings reveal the fact that the intrinsic information can be exploited for performance improvements.…”

Section: B Intrinsic Interference Utilizationmentioning

confidence: 99%

“…The distribution of the weight matrix shown in Fig.2 (b) stems from the above formula, and is determined by IOTA pluse shaping g(t). Combining (14) and (15) (16) In Fig.2 (a), the input to the real and the imaginary branch equalizers at the JSG-IOTA receiver can be expressed as…”

Section: Joint Detection and Decodingmentioning

confidence: 99%

“…In this paper, we develop a novel NOMA scheme for FBMC systems. Among different prototype filters in FBMC [14][15] [16], we adopt the isotropic orthogonal transform algorithm (IOTA) function as the prototype filter, where the spreading factor of the applied IOTA equals to one. In addition, to show the general effect of the proposed scheme, we also adopt other prototype filters such as the PHYDYAS filter to our design.…”

Section: Introductionmentioning

confidence: 99%

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Joint Sparse Graph for FBMC/OQAM Systems

Wen

Xiao

Razavi

et al. 2018

IEEE Trans. Veh. Technol.

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As an advanced non-orthogonal multiple access (NOMA) technique, the low density signature (LDS) has never been used in filter bank multicarrier (FBMC) systems. In this paper, we model a low density weight matrix (LDWM) to utilize the intrinsic interference in FBMC systems, and propose a LDS-FBMC scheme which applies LDS to FBMC signals. In addition, a joint sparse graph for FBMC named JSG-FBMC is proposed to combine single graphs of LDS, LDWM and low density paritycheck (LDPC) codes which respectively represent techniques of NOMA, multicarrier modulation and channel coding. By employing the message passing algorithm (MPA), a joint receiver performing detection and decoding simultaneously on the joint sparse graph is designed. Extrinsic information transfer (EXIT) charts and construction guidelines of the joint sparse graph are studied. Simulations show the superiority of JSG-FBMC to stateof-the-art techniques such as OFDM, FBMC, LDS-OFDM, LDS-FBMC and turbo structured LDS-FBMC.

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Section: B Intrinsic Interference Utilizationmentioning

confidence: 99%

Section: Joint Detection and Decodingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Joint Sparse Graph for FBMC/OQAM Systems

Wen

Xiao

Razavi

et al. 2018

IEEE Trans. Veh. Technol.

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“…This analysis led to a new simple and efficient equalizer utilizing this correlation. Also in [20] an analysis on intrinsic interference of a causal multirate OFDM/OQAM systems is conducted. These findings reveal the fact that the intrinsic information can be exploited for performance improvements.…”

Section: Capacity Of Ofdm/oqam Systems With Utilized Intrinsic Imentioning

confidence: 99%

Information Theoretic Analysis of OFDM/OQAM with Utilized Intrinsic Interference

Razavi

Xiao

Tafazolli

2015

IEEE Signal Process. Lett.

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In this paper, the capacity of OFDM/OQAM with isotropic orthogonal transfer algorithm (IOTA) pulse shaping is evaluated through information theoretic analysis. In the conventional OFDM systems the insertion of a cyclic prefix (CP) decreases the system's spectral efficiency. As an alternative to OFDM, filter bank based multicarrier systems adopt a proper pulse shaping with good time and frequency localisation properties to avoid interference and maintain orthogonality in real field among sub-carriers without the use of CP. We evaluate the spectral efficiency of OFDM/OQAM systems with IOTA pulse shaping in comparison with conventional OFDM/QAM systems, and our analytical model is further extended in order to gain insights into the effect of utilizing the intrinsic interference on the performance of our system. Furthermore, the spectral efficiency of OFDM/OQAM systems is analyzed when the effect of intersymbol and inter-carrier interference is considered.Index Terms-OFDM/OQAM, intrinsic interference.

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“…CO-FBMC/OQAM signal as a multi-carrier signal is known to be vulnerable to both PN and CFO. Different from QAM signal, where PN leads to sole constellation rotation, phase noise results in additional crosstalk for OQAM because of the intrinsic imaginary interference (IMI) [11], [12]. Therefore, OQAM imposes a strict requirement on the laser linewidth, and generally a laser linewidth of several kHz is indispensable for achieving its benefit.…”

Section: Introductionmentioning

confidence: 99%

Joint Carrier Frequency Offset and Phase Noise Estimation Based on Pseudo-Pilot in CO-FBMC/OQAM System

et al. 2019

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A simple method based on a designed pseudo-pilot is proposed for both carrier frequency offset (CFO) and phase noise (PN) estimation for the coherent optical offsetquadratic-amplitude modulation (QAM) based filterbank multicarrier (CO-FBMC/OQAM) transmission. Numerical simulations are performed to evaluate the performance of the proposed scheme for a 20 GBd/s FBMC/OQAM system. The simulation results show that a robust and precise CFO and PN estimation can be achieved simultaneously in comparison with traditional methods. For the CFO estimation, our method can achieve a wide CFO estimation range of [−10, +10 GHz]. As for the PN compensation, the tolerable combined laser linewidths under 1 dB optical signal noise ratio (OSNR) penalty constraint for 4/8/16/32-QAM are around 1.6 MHz, 0.8 MHz, 500 kHz, and 250 kHz, respectively. The results indicate that the proposed scheme can be used for a wide range CFO and PN compensation with better transmission performance in high speed CO-FBMC/OQAM system.

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Analysis of Self Interference in a Basic FBMC System

Cited by 10 publications

References 18 publications

Joint Sparse Graph for FBMC/OQAM Systems

Joint Sparse Graph for FBMC/OQAM Systems

Information Theoretic Analysis of OFDM/OQAM with Utilized Intrinsic Interference

Joint Carrier Frequency Offset and Phase Noise Estimation Based on Pseudo-Pilot in CO-FBMC/OQAM System

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