Near Maximum Likelihood Synchronization for Filter Bank Multicarrier Systems

Saeedi-Sourck, Hamid; Sadri, Saeed; Wu, Yan; Farhang‐Boroujeny, Behrouz

doi:10.1109/wcl.2013.012513.120713

Cited by 26 publications

(16 citation statements)

References 9 publications

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“…A few researchers, who have looked at the packet design for FBMC, have also suggested a similar packet format to those of the OFDM [82][83][84][85][86]. In particular, a periodic training consisting of a few repetitions of a pilot FBMC symbol is suggested to be used along with a least squares or a maximum likelihood estimator to estimate CFO and symbol timing.…”

Section: Synchronization and Tracking Methodsmentioning

confidence: 99%

“…In the rest of this section, we make comments/suggestions for future research in three directions related to synchronization and tracking methods in FBMC systems. Figure 24 presents the packet format that has been proposed in [82][83][84][85][86]. The short preamble Short preamble Long preamble Data/payload t 1 t 2 t 10 · · · · · · Figure 24: An FBMC data packet with short and long preambles.…”

Section: Synchronization and Tracking Methodsmentioning

confidence: 99%

“…Naturally, to satisfy this assumption a mechanism similar to short preamble may be necessary. There is also some difference in the long preamble proposed in [83][84][85] and the one proposed in [82,86]. In the context of SMT waveform, the long preamble proposed in [83][84][85] is constructed based on a set of complex-valued pilot symbols that occupy all subcarriers.…”

Section: Preamble Designmentioning

confidence: 99%

“…In the context of SMT waveform, the long preamble proposed in [83][84][85] is constructed based on a set of complex-valued pilot symbols that occupy all subcarriers. The long preamble proposed in [82,86], on the other hand, is real-valued and only occupies the alternate subcarriers; the other subcarriers are left empty. This modification/simplification of the long preamble as demonstrated through numerical results in [86] improves the accuracy of the CFO estimates significantly.…”

Section: Preamble Designmentioning

confidence: 99%

“…The long preamble proposed in [82,86], on the other hand, is real-valued and only occupies the alternate subcarriers; the other subcarriers are left empty. This modification/simplification of the long preamble as demonstrated through numerical results in [86] improves the accuracy of the CFO estimates significantly.…”

Section: Preamble Designmentioning

confidence: 99%

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Filter Bank Multicarrier Modulation: A Waveform Candidate for 5G and Beyond

Farhang‐Boroujeny

2014

Advances in Electrical Engineering

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133

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Recent discussions on viable technologies for 5G emphasize on the need for waveforms with better spectral containment per subcarrier than the celebrated orthogonal frequency division multiplexing (OFDM). Filter bank multicarrier (FBMC) is an alternative technology that can serve this need. Subcarrier waveforms are built based on a prototype filter that is designed with this emphasis in mind. This paper presents a broad review of the research work done in the wireless laboratory of the University of Utah in the past 15 years. It also relates this research to the works done by other researchers. The theoretical basis based on which FBMC waveforms are constructed is discussed. Also, various methods of designing effective prototype filters are presented. For completeness, polyphase structures that are used for computationally efficient implementation of FBMC systems are introduced and their complexity is contrasted with that of OFDM. The problems of channel equalization as well as synchronization and tracking methods in FBMC systems are given a special consideration and a few outstanding research problems are identified. Moreover, this paper brings up a number of appealing features of FBMC waveforms that make them an ideal choice in the emerging areas of multiuser and massive MIMO networks.

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Section: Synchronization and Tracking Methodsmentioning

confidence: 99%