
New Construction of Optimal InterferenceFree ZCZ Sequence Sets by Zak Transform
In this paper, a new construction of interferencefree zero correlation ...
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Completely uniformly distributed sequences based on de Bruijn sequences
We study a construction published by Donald Knuth in 1965 yielding a com...
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Cubic Metric Reduction for Repetitive CAZAC Sequences in frequency domain in 5G System
To meet the increasing requirements for wireless communications, unlicen...
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On the Phase Sequences and Permutation Functions in the SLM Scheme for OFDMIM Systems
In orthogonal frequency division multiplexing with index modulation (OFD...
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5G, OFDM, Cubic Metric, NRU, Occupied Channel Bandwidth, CAZAC, ZadoffChu Sequence
In NRbased Access to Unlicensed Spectrum (NRU) of 5G system, to satisf...
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A Direct Construction of Optimal ZCCS and IGC Code Set With Maximum Column Sequence PMEPR Two For MCCDMA System
Multicarrier codedivision multipleaccess (MCCDMA) combines an orthogon...
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The Future of Prosody: It's about Time
Prosody is usually defined in terms of the three distinct but interactin...
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Zero Correlation Zone Sequences With Flexible BlockRepetitive Spectral Constraints
A general construction of a set of timedomain sequences with sparse periodic correlation functions, having multiple segments of consecutive zerovalues, i.e. multiple zero correlation zones (ZCZs), is presented. All such sequences have a common and blockrepetitive structure of the positions of zeros in their Discrete Fourier Transform (DFT) sequences, where the exact positions of zeros in a DFT sequence do not impact the positions and sizes of ZCZs. This property offers completely new degree of flexibility in designing signals with good correlation properties under various spectral constraints. The nonzero values of the DFT sequences are determined by the corresponding frequencydomain modulation sequences, constructed as the elementbyelement product of two component sequences: a "long" one, which is common to the set of timedomain sequences, and which controls the peaktoaverage power ratio (PAPR) properties of the timedomain sequences; and a "short" one, periodically extended to match the length of the "long" component sequence, which controls the nonzero crosscorrelation values of all timedomain sequences. It is shown that 0 dB PAPR of timedomain sequences can be obtained if the "long" frequencydomain component sequence is selected to be a modulatable constant amplitude zero autocorrelation (MCAZAC) sequence. A generalized and simplified unified construction of MCAZAC sequences is presented.
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