Filter bank multicarrier modulation-based signal transmitting method, signal receiving method and device

Patent metadata

Field	Value
Publication number	US-10128995-B2
Application number	US-201615236383-A
Country	US
Kind code	B2
Filing date	Aug 12, 2016
Priority date	Aug 21, 2015
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

A Filter Bank Multicarrier (FBMC) modulation-based signal transmitting method includes mapping, by a transmitter, an original Data Block (DB) with at least one symbol to a first Resource Block (RB), preprocessing the original DB, and mapping the preprocessed original DB to a second RB, modulating, by the transmitter, data of the first RB and the second RB by using a FBMC modulation, and, transmitting, by the transmitter, the data modulated. A transmitter, comprising a mapping module, a modulating module and a transmitting module, wherein the mapping module is to map an original DB with at least one symbol to a first resource block (RB), preprocess the original DB, and map the preprocessed original DB to a second RB, the modulating module is to modulate data of the first RB and the second RB, by using FBMC modulation, and, the transmitting module is to transmit the data modulated.

First claim

What is claimed is:

1. A filter bank multicarrier (FBMC) modulation-based signal transmitting method, the method comprising:
mapping, by a transmitter, an original data block (DB) with at least one symbol to a first resource block (RB), preprocessing the original DB, and mapping the preprocessed original DB to a second RB;
modulating, by the transmitter, data of the first RB and the second RB by using an FBMC modulation; and
transmitting, by the transmitter, the data modulated.

2. The method according to claim 1 , further comprising at least one of:
allocating, by the transmitter, same time resources for the first RB and the second RB, and allocating non-overlapped frequency resources with an equal number for the first RB and the second RB; or
allocating, by the transmitter, same frequency resources for the first RB and the second RB, and allocating non-overlapped time resources with the equal number for the first RB and the second RB.

3. The method according to claim 1 , further comprising:
dynamically selecting, by the transmitter, a resource allocation mode for allocating time frequency resources to the first RB and the second RB, based on channel state information fed back by a receiver; and
indicating the resource allocation mode to the receiver in a downlink control channel or a downlink shared channel, wherein indicating the resource allocation mode to the receiver comprises transmitting an index of the resource allocation mode in the downlink control channel or the downlink shared channel, so as to facilitate the receiver to obtain the resource allocation mode after searching in a look-up table with the index of the resource allocation mode.

4. The method according to claim 1 , further comprising:
dynamically adjusting, by the transmitter, a size of the original DB and a mapping order of preprocessed DBs based on channel state information fed back by a receiver; and
informing the receiver a size of a DB to be processed currently and the mapping order by using a downlink control channel or a downlink shared channel,
wherein informing the receiver the size of the DB to be processed currently and the mapping order by using the downlink control channel or the downlink shared channel comprises transmitting a DB size indicator and a mapping order indicator, so as to facilitate the receiver to obtain the DB size and the mapping order of preprocessed DBs, after searching in a look-up table with the DB size indicator and the mapping order indicator.

5. The method according to claim 1 , further comprising:
receiving from the receiver, by the transmitter, an index of a resource allocation mode, a DB size index and a mapping order index, which are determined by the receiver based on a channel estimation result, determining the resource allocation mode, a DB size and a mapping order by searching a look-up table, wherein searching in the look-up table comprises at least one of:
the resource allocation mode, the DB size and the mapping order respectively corresponding to the look-up table, and respectively possessing a corresponding index; or
the resource allocation mode, the DB size and the mapping order corresponding to one look-up table.

6. The method according to claim 2 , further comprising:
when a channel time selective index value meets a set first condition, selecting, by the transmitter, to allocate time frequency resources in a frequency domain;
when a channel frequency selective index value meets a set second condition, selecting, by the transmitter, to allocate the time frequency resources in a time domain; and
when the channel time selective index value meets the set first condition and the channel frequency selective index value meets the set second condition, selecting, by the transmitter, to allocate the time frequency resources in the frequency domain.

7. The method according to claim 1 , wherein preprocessing the original DB and mapping the preprocessed original DB to the second RB comprises at least one of:
mapping the preprocessed DB to the second RB in sequence; or
mapping the preprocessed DB to the second RB in a reverse sequence,
wherein preprocessing the original DB comprises at least one of:
performing a conjugate to each symbol in the original DB,
performing the conjugate to each symbol in the original DB, and taking an opposite number of a symbol of an even subcarrier or an odd subcarrier,
taking an opposite number of a symbol of an even subcarrier, or an odd subcarrier in the original DB, and performing the conjugate to each symbol,
taking an opposite number of a symbol of an even subcarrier, or an odd subcarrier in the original DB, and
taking an opposite number of a symbol of an even or odd offset quadrature amplitude modulation (OQAM) symbol in the original DB.

8. The method according to claim 4 , wherein dynamically adjusting the size of the original DB comprises:
classifying channel change speeds into different groups, wherein each group corresponds to the size of the original DB; and
obtaining the DB size by using a corresponding index, based on a channel change speed,
wherein dynamically adjusting the mapping order of the preprocessed DBs comprises:
when the channel change speed is greater than a set first threshold, preprocessing the DBs based on the mapping order, and
when the channel change speed is less than a set second threshold, preprocessing the DBs based on an inverted mapping order, and

wherein the channel change speed comprises a frequency domain change speed and a time change speed, the frequency domain change speed is measured by a channel frequency selective index, the time change speed is measured by a channel time selective index, the channel frequency selective index and the channel time selective index are determined by the receiver based on a channel estimation result.

9. The method according to claim 4 , wherein dynamically adjusting the size of the original DB comprises adjusting the size of the original DB based on a size of a data symbol block to be transmitted, such that the size of the data symbol block to be transmitted is an integer multiple of the size of the original DB.

10. The method according to claim 3 , wherein determining the resource allocation mode, a size of the original DB, and a mapping order comprises:
determining the resource allocation mode based on channel time selective fading and channel frequency selective fading;
when selecting to allocate time frequency resources in a frequency domain, determining the size of the original DB and the mapping order based on the channel frequency selective fading; and
when selecting to allocate the time frequency resources in a time domain, determining the size of the original DB and the mapping order based on the channel time selective fading.

11. A transmitter, comprising:
at least one processor configured to:
map an original data block (DB) with at least one symbol to a first resource block (RB), preprocess the original DB, and map the preprocessed original DB to a second RB;
modulate data of the first RB and the second RB, by using a filter bank multicarrier (FBMC) modulation; and
transmit the data modulated.

12. A filter bank multicarrier (FBMC) modulation-based signal receiving method, the method comprising:
receiving, by a receiver, a data block (DB); demodulating, by the receiver, the DB received, by using an FBMC modulation mode;
equalizing, by the receiver, the demodulated DB; and
performing, by the receiver, a combination process to a symbol of a first resource block (RB) in the equalized DB and a symbol of a second RB in the equalized DB based on a set DB size.

13. The method acco

Assignees

• Samsung Electronics Co Ltd
• Samsung Electronics Co Ltd

Inventors

• Qian Chen
• Sun Pengfei
• Yu Bin
• Sun Chengjun

Classifications

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title

• H04L27/2634

  Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation · CPC title

• H04L5/0048 Primary

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L27/2654 Primary

  Filtering per subcarrier, e.g. filterbank multicarrier [FBMC] · CPC title

• H04L27/26416

  Filtering per subcarrier, e.g. filterbank multicarrier [FBMC] · CPC title