公开(公告)号：US20200007361A1

公开(公告)日：2020-01-02

申请号：US16439054

申请日：2019-06-12

Applicant: Nokia Technologies Oy

Inventor： Markku Renfors ,  Kari Pekka Pajukoski ,  Toni Aleksi Levanen ,  Juha Yli-Kaakinen ,  Alaa Eddin Loulou

IPC: H04L25/03 ,  H04L5/00 ,  H04L27/26 ,  H04L1/00

Abstract: According to an aspect, there is provided a waveform processing device. The waveform processing device includes circuitry for receiving an input signal including one or more subsequent orthogonal frequency division multiplexing, OFDM, symbol blocks each of which includes a cyclic prefix and an OFDM data block and corresponds to one or more subbands. Further, the waveform processing device includes circuitry for segmenting each OFDM symbol block of the input signal into a set of a pre-defined number of partially overlapping signal blocks of equal length so that non-overlapping samples of the pre-defined number of partially overlapping signal blocks in each set include, in combination, an OFDM data block. Moreover, the waveform processing device includes circuitry for filtering each signal block in each set and for combining the filtered signal blocks in each set using overlap-and-save processing to produce one or more filtered OFDM data blocks for each subband.

公开(公告)号：US10778476B2

公开(公告)日：2020-09-15

申请号：US16439054

申请日：2019-06-12

Applicant: Nokia Technologies Oy

Inventor： Markku Renfors ,  Kari Pekka Pajukoski ,  Toni Aleksi Levanen ,  Juha Yli-Kaakinen ,  Alaa Eddin Loulou

IPC: H04L27/26 ,  H04L25/03 ,  H04L5/00 ,  H04L1/00

Abstract: According to an aspect, there is provided a waveform processing device. The waveform processing device includes circuitry for receiving an input signal including one or more subsequent orthogonal frequency division multiplexing, OFDM, symbol blocks each of which includes a cyclic prefix and an OFDM data block and corresponds to one or more subbands. Further, the waveform processing device includes circuitry for segmenting each OFDM symbol block of the input signal into a set of a pre-defined number of partially overlapping signal blocks of equal length so that non-overlapping samples of the pre-defined number of partially overlapping signal blocks in each set include, in combination, an OFDM data block. Moreover, the waveform processing device includes circuitry for filtering each signal block in each set and for combining the filtered signal blocks in each set using overlap-and-save processing to produce one or more filtered OFDM data blocks for each subband.

公开(公告)号：US10742356B2

公开(公告)日：2020-08-11

申请号：US16295631

申请日：2019-03-07

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Markku Renfors ,  Juha Yli-Kaakinen ,  Toni Levanen

IPC: H04L1/00 ,  H04L5/00 ,  H04L27/26

Abstract: According to an aspect, there is provided a waveform processing device. Said waveform processing device comprises means for performing the following. Upon receiving one or more input signals, each of which corresponds to a different subband, the waveform processing device segments each of the one or more input signals to a subband-specific set of parallel signal blocks. Then, the waveform processing device filters each subband-specific set by applying at least a first time window function, a transform-plane window function and a second time window function in this order. Finally, the waveform processing device concatenates filtered signals to an output signal.