Filter Design for Generalized Frequency-Division Multiplexing

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In this paper, optimal filter design for generalized frequency-division multiplexing (GFDM) is considered under two design criteria: rate maximization and out-of-band (OOB) emission minimization. First, the problem of GFDM filter optimization for rate maximization is formulated by expressing the transmission rate of GFDM as a function of GFDM filter coefficients. It is shown that Dirichlet filters are rate-optimal in additive white Gaussian noise channels with no carrier frequency offset (CFO) under linear zero-forcing (ZF) or minimum mean-square error (MMSE) receivers, but in general channels perturbed by CFO a properly designed nontrivial GFDM filter can yield better performance than Dirichlet filters by adjusting the subcarrier waveform to cope with the channel-induced CFO. Next, the problem of GFDM filter design for OOB emission minimization is formulated by expressing the power spectral density of the GFDM transmit signal as a function of GFDM filter coefficients, and it is shown that the OOB emission can be reduced significantly by designing the GFDM filter properly and there is a tradeoff between the transmission rate and OOB radiation for GFDM with linear receivers. Finally, joint design of GFDM filter and window for the two design criteria is considered.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2017-04
Language
English
Article Type
Article
Keywords

DISPERSIVE CHANNELS; DATA-TRANSMISSION; PERFORMANCE; SYSTEMS

Citation

IEEE TRANSACTIONS ON SIGNAL PROCESSING, v.65, no.7, pp.1644 - 1659

ISSN
1053-587X
DOI
10.1109/TSP.2016.2641382
URI
http://hdl.handle.net/10203/222679
Appears in Collection
EE-Journal Papers(저널논문)
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