Iterative normalization technique for reference sequence generation for zero-tail discrete fourier transform spread orthogonal frequency division multiplexing

Gilberto Berardinelli (Opfinder), Frank Frederiksen (Opfinder), Klaus I. Pedersen (Opfinder), Preben Elgaard Mogensen (Opfinder), Kari Pajukoski (Opfinder)

Publikation: PatentForskning

Resumé

Systems, methods, apparatuses, and computer program products for generating sequences for zero-tail discrete fourier transform (DFT)-spread-orthogonal frequency division multiplexing (OFDM) (ZT DFT-s-OFDM) reference signals. One method includes adding a zero vector to an input sequence, and performing an iterative manipulation of the input sequence. The performing of the iterative manipulation of the input sequence may include, for example: computing frequency domain response of the sequence, normalizing elements of the computed frequency domain sequence to unitary power while maintaining phase of each of the elements, converting the sequence to time domain, generating a zero-padded sequence by forcing a zero head and tail of the sequence, and repeating the steps until a final sequence with zero-tail and flat frequency response is obtained.
OriginalsprogEngelsk
IPCH04L27/2613
PatentnummerUS9544173B1
LandDanmark
StatusUdgivet - 2017

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Discrete Fourier transforms
Orthogonal frequency division multiplexing
Frequency response
Computer program listings

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abstract = "Systems, methods, apparatuses, and computer program products for generating sequences for zero-tail discrete fourier transform (DFT)-spread-orthogonal frequency division multiplexing (OFDM) (ZT DFT-s-OFDM) reference signals. One method includes adding a zero vector to an input sequence, and performing an iterative manipulation of the input sequence. The performing of the iterative manipulation of the input sequence may include, for example: computing frequency domain response of the sequence, normalizing elements of the computed frequency domain sequence to unitary power while maintaining phase of each of the elements, converting the sequence to time domain, generating a zero-padded sequence by forcing a zero head and tail of the sequence, and repeating the steps until a final sequence with zero-tail and flat frequency response is obtained.",
author = "Gilberto Berardinelli and Frank Frederiksen and Pedersen, {Klaus I.} and Mogensen, {Preben Elgaard} and Kari Pajukoski",
year = "2017",
language = "English",
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T1 - Iterative normalization technique for reference sequence generation for zero-tail discrete fourier transform spread orthogonal frequency division multiplexing

AU - Berardinelli, Gilberto

AU - Frederiksen, Frank

AU - Pedersen, Klaus I.

AU - Mogensen, Preben Elgaard

AU - Pajukoski, Kari

PY - 2017

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AB - Systems, methods, apparatuses, and computer program products for generating sequences for zero-tail discrete fourier transform (DFT)-spread-orthogonal frequency division multiplexing (OFDM) (ZT DFT-s-OFDM) reference signals. One method includes adding a zero vector to an input sequence, and performing an iterative manipulation of the input sequence. The performing of the iterative manipulation of the input sequence may include, for example: computing frequency domain response of the sequence, normalizing elements of the computed frequency domain sequence to unitary power while maintaining phase of each of the elements, converting the sequence to time domain, generating a zero-padded sequence by forcing a zero head and tail of the sequence, and repeating the steps until a final sequence with zero-tail and flat frequency response is obtained.

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