# US 2019/0173713 A1 · Transmitter and corresponding method

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- Number: US 2019/0173713 A1
- Document ID: US20190173713A1
- Status: Published application
- Kind: A1
- Application number: 16/321,088
- Filed: 2017-07-27
- Published: 2019-06-06
- Earliest claimed: 2016-07-28
- Assignees: Alcatel Lucent
- Applicants: Alcatel Lucent
- Inventors: Haijing Liu; He Wang
- Web page: https://patentgrep.com/patent/US20190173713A1

## CPC

- H04L 27/26414: {Filtering per subband or per resource block, e.g. universal filtered multicarrier [UFMC] or generalized frequency division multiplexing [GFDM]}
- H04L 25/03343: {Arrangements at the transmitter end}
- H04L 27/2646: {using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length}
- H04J 2011/0009: {with FDM/FDMA}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S)

## Abstract

The present disclosure provides a transmitter and a corresponding method. The method includes: pre-processing a signal to be transmitter, the signals being across a plurality of sub-bands; filtering the signal to generate a universal-filtered orthogonal frequency division multiplexing (UF-OFDM) signal, where two or more sub-bands of the plurality of sub-bands are filtered by a common filter; and transmitting the generated UF-OFDM signal.

## Claims

### Claim 1

A communication method, comprising:
pre-processing a signal to be transmitted, the signal being across a plurality of sub-bands;
filtering the signal to generate a Universal-Filtered Orthogonal Frequency Division multiplexing (UF-OFDM) signal, two or more of the plurality of sub-bands being filtered by a common filter; and
transmitting the generated UF-OFDM signal.

### Claim 2 (depends on 1)

The method of claim 1, wherein the filtering comprises:
determining a bandwidth of continuous sub-bands in the plurality of sub-bands;
determining, based on the determined bandwidth, a filter coefficient for filtering the continuous sub-bands by referring to a predetermined look-up table, the look-up table storing correlations between bandwidths of sub-bands and respective filter coefficients.

### Claim 3 (depends on 2)

The method of claim 2, wherein the plurality of sub-bands has a same bandwidth, and
wherein determining the bandwidth of the continuous sub-bands comprises determining the number of the continuous sub-bands.

### Claim 4 (depends on 1)

The method of claim 1, wherein the pre-processing comprises:
pre-equalizing a frequency domain signal; and
transforming the frequency domain signal into a time domain by a frequency-time transformation to obtain the signal to be transmitted.

### Claim 5 (depends on 4)

The method of claim 4, wherein the pre-equalizing comprises:
determining a filter coefficient for the filtering; and
determining, based on a bandwidth of the plurality of sub-bands and the filter coefficient, a parameter for the pre-equalizing.

### Claim 6 (depends on 1)

The method of claim 1, wherein the filtering comprises:
filtering a first group of continuous sub-bands in the plurality of sub-bands using a first filter; and
filtering a second group of continuous sub-bands in the plurality of sub-bands using a second filter, the first and second groups of continuous sub-bands being discontinuous from one another, and the first filter being different from the second filter.

### Claim 7 (depends on 1)

The method of claim 1, wherein the filtering comprises:
filtering the signal using a finite impulse response filter.

### Claim 8

A transmitter, comprising:
a controller; and
a memory coupled to the controller, the controller configured, with the memory, to:
pre-process a signal to be transmitted, the signal being across a plurality of sub-bands; and
filter the signal to generate a Universal-Filtered Orthogonal Frequency Division Multiplexing (UF-OFDM) signal for transmission by the transmitter, two or more of the plurality of sub-bands being filtered by a common filter.

### Claim 9 (depends on 8)

The transmitter of claim 8, wherein the controller is further configured to:
determine a bandwidth of continuous sub-bands in the plurality of sub-bands; and
determine, based on the determined bandwidth, a filter coefficient for filtering the continuous sub-bands by referring to a predetermined look-up table, the look-up table storing correlations between bandwidths of sub-bands and respective filter coefficients.

### Claim 10 (depends on 9)

The transmitter of claim 9, wherein the plurality of sub-bands has a same bandwidth, and the controller is further configured to:
determine the bandwidth of the continuous sub-bands by determining the number of the continuous sub-bands.

### Claim 11 (depends on 8)

The transmitter of claim 8, wherein the controller is further configured to:
pre-equalize a frequency domain signal; and
transform the frequency domain signal into a time domain by a frequency-time transformation to obtain the signal to be transmitted.

### Claim 12 (depends on 11)

The transmitter of claim 11, wherein the controller is further configured to:
determine a filter coefficient for the filtering; and
determine, based on a bandwidth of the plurality of sub-bands and the filter coefficient, a parameter for the pre-equalizing.

### Claim 13 (depends on 8)

The transmitter of claim 8, wherein the controller is configured to:
filter a first group of continuous sub-bands in the plurality of sub-bands using a first filter; and
filter a second group of continuous sub-bands in the plurality of sub-bands using a second filter, the first and second groups of continuous sub-bands being discontinuous from one another, and the first filter being different from the second filter.

### Claim 14 (depends on 8)

The transmitter of claim 8, wherein the controller is configured to:
filter the signal using a finite impulse response filter.

### Claim 15

A transmitter, comprising:
a computing module including:
a pre-processing module configured to pre-process a signal to be transmitted, the signal being across a plurality of sub-bands; and
a filtering module configured to filter the signal to generate a Universal-Filtered Orthogonal Frequency Division Multiplexing (UF-OFDM) signal for transmission, two or more of the plurality of sub-bands being filtered by a common filter.

### Claim at position 16

-21. (canceled)