Multiple dimension modulation in 5G systems

Patent metadata

Field	Value
Publication number	US-10924229-B2
Application number	US-201716088075-A
Country	US
Kind code	B2
Filing date	Mar 29, 2017
Priority date	Mar 30, 2016
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

Systems and methods related to increased spectrum efficiency for 5G communications, comprising combining time, frequency, spatial, and signal domains for multi-dimension modulation. In one embodiment, the ability of reconfigurable antenna to change their radiation pattern and/or polarization modes may be used to modulate additional information onto the conventional SM-MIMO transmitted signal. In further embodiments, various combinations of space shift keying, block coding, multi-carrier modulation, and the like may be used to introduce additional dimensions for data modulation and achieve diversity gain.

First claim

We claim:

1. A method, comprising:
receiving as input a set of encoded bits;
dividing the set of encoded bits into a plurality of groups;
mapping the plurality of groups, comprising:
mapping a first group to a signal space based modulation format;
mapping a second group to a radiation pattern/polarization modulation (RPM) of a configurable antenna; and
mapping each other group to a control signal for a distinct configurable feature of a transmitter system;
generating a first plurality of constellation symbols selected from a first constellation symbol set according to the mapping of the first group onto the signal space based modulation format
generating a second plurality of constellation symbols from the first plurality of constellation symbols using a multi-carrier modulation (MCM) mapping function, wherein the second plurality of constellation symbols are selected from a second constellation symbol set having a higher order than the first constellation symbol set

configuring the RPM of at least one of a plurality of configurable antennas of the transmitter system into one of a plurality of modes according to the mapping of the second group;
configuring at least one additional configurable feature of at least one of the plurality of configurable antennas of the transmitter system according to the control signal of the mapping of at least one of the other groups; and
transmitting a modulated signal from the configured at least one configurable antenna.

2. The method of claim 1 , further comprising selecting at least one of the plurality of configurable antennas of the transmitter system based on the mapping of a third group, wherein the third group is mapped to a control signal for antenna selection.

3. The method of claim 1 , wherein one of the plurality of groups of encoded bits is mapped to a control signal indicating a set of a plurality of frequency subcarriers to be utilized.

4. The method of claim 1 , wherein one of the plurality of groups of encoded bits is mapped to a control signal indicating a set of a plurality of time units to be utilized.

5. The method of claim 1 , wherein a dimensional diversity assignment of one of the plurality of groups of encoded bits is selected to increase spectral efficiency.

6. The method of claim 1 , wherein a selection of sub-carriers for MCM is grouped to facilitate polarization diversity transmissions.

7. The method of claim 1 , wherein for high QAM (Quadrature Amplitude Modulation) constellations, a selection of sub-carriers for MCM is extended to multiple symmetric pairs.

8. The method of claim 1 , wherein a dimensional diversity assignment of the second plurality of constellation symbols is selected for improved diversity gain.

9. The method of claim 8 , wherein the dimensional diversity assignment is in a predefined pattern.

10. The method of claim 8 , wherein the dimensional diversity assignment is dynamic using channel related information.

11. The method of claim 1 , wherein the MCM mapping function maps the first plurality of constellation symbols to the second plurality of constellation symbols by a p×q matrix, such that a diversity factor is p, while q is selected as

log
2

⁢

M
2

log
2

⁢

M
1

,

wherein M 1 and M 2 are respectively modulation orders of the first and the second plurality of constellation symbols.

12. The method of claim 11 , wherein a dimension of the matrix is 2×1, and the a first matrix component is the first plurality of constellation symbols scaled by a first scaling factor, and a second matrix component is a complex conjugation of the first plurality of constellation symbols scaled by a second scaling factor.

13. The method of claim 12 , wherein a selection of the first and the second scaling factors, such that the square root of the division of the first scaling factor by the second scaling factor is the absolute value of the first plurality of constellation symbols, is for non-coherent communication.

14. A system comprising a processor and a non-transitory storage medium storing instructions operative, when executed on the processor, to perform functions including:
receiving as input a set of encoded bits;
dividing the set of encoded bits into a plurality of groups;
mapping the plurality of groups, comprising:
mapping a first group to a signal space based modulation format;
mapping a second group to a radiation pattern/polarization modulation (RPM) of a configurable antenna; and
mapping each other group to a control signal for a distinct configurable feature of a transmitter system;

generating a first plurality of constellation symbols selected from a first constellation symbol set according to the mapping of the first group onto the signal space based modulation format;
generating a second plurality of constellation symbols from the first plurality of constellation symbols using a multi-carrier modulation (MCM) mapping function, wherein the second plurality of constellation symbols are selected from a second constellation symbol set having a higher order than the first constellation symbol set;
configuring the RPM of at least one of a plurality of configurable antennas of the transmitter system into one of a plurality of modes according to the mapping of the second group;
configuring at least one additional configurable feature of at least one of the plurality of configurable antennas of the transmitter system according to the control signal of the mapping of at least one of the other groups; and
transmitting a modulated signal from the configured at least one configurable antenna.

15. The system of claim 14 , wherein a dimensional diversity assignment of the second plurality of constellation symbols is selected for improved diversity gain.

16. The system of claim 15 , wherein the dimensional diversity assignment is in a predefined pattern.

17. The system of claim 15 , wherein the dimensional diversity assignment is dynamic using channel related information.

18. The system of claim 14 , wherein the MCM mapping function maps the first plurality of constellation symbols to the second plurality of constellation symbols by a p×q matrix, such that a diversity factor is p, while q is selected as

log
2

⁢

M
2

log
2

⁢

M
1

,

wherein M 1 and M 2 are respectively modulation orders of the first and the second plurality of constellation symbols.

19. The system of claim 18 , wherein a dimensio

Assignees

• Idac Holdings Inc

Inventors

• Xi Fengjun
• Ferrante Steven
• Pan Kyle Jung-Lin
• Sahin Alphan
• Ye Chunxuan
• Olesen Robert L

Classifications

• H04L5/0023

  Time-frequency-space · CPC title

• H04L5/0026 Primary

  Division using four or more dimensions, e.g. beam steering or quasi-co-location [QCL] · CPC title

• H04B7/0686 Primary

  Hybrid systems, i.e. switching and simultaneous transmission · CPC title

• H04B7/10

  Polarisation diversity; Directional diversity · CPC title

• H04B7/0602

  using antenna switching (H04B7/0686 takes precedence; antenna beam directivity switching H01Q3/24) · CPC title