System and method for advanced spatial modulation in 5G systems

Patent metadata

Field	Value
Publication number	US-10756796-B2
Application number	US-201716088363-A
Country	US
Kind code	B2
Filing date	Mar 29, 2017
Priority date	Mar 30, 2016
Publication date	Aug 25, 2020
Grant date	Aug 25, 2020

Abstract

Systems and methods described herein are provided for radiation pattern and modulation (RPM) based on channel-state information (CSI). The method may comprise receiving a set of bits; dividing the set of bits into at least three groups, wherein at least one group is size limited by a diversity order and selection factor applied by a CSI controller; mapping the groups to distinct control signals; generating a modulated RF signal and selecting at least one configurable antenna and a configuration of said at least one antenna based on the control signals; and transmitting the modulated RF signal through the at least one configured antenna.

First claim

We claim:

1. A method comprising:
a joint modulation controller of a transmitter receiving at least one operating condition parameter of the transmitter, channel state information, and channel rank information;
the joint modulation controller determining at least one diversity order and antenna selection factor based on the received at least one operating condition parameter;
receiving as input at the transmitter a set of information bits;
dividing the set of information bits into a plurality of groups, wherein at least one group is either a signal space keying group or a radiation pattern/polarization group having size limited by the diversity order determined by the joint modulation controller;
mapping a first group to a plurality of signal space based modulation formats;
mapping the at least one group and each other group to a control signal for a configurable feature of a transmitter system;
generating and modulating a plurality of base signals according to the mapping of the first group onto the modulation format, each of the plurality of base signals generated by a selected number of transmit radio frequency chains using spatial multiplexing, the selected number of transmit radio frequency chains being based on the channel rank information;
configuring at least one configurable feature of a configurable antenna of the transmitter system based on the control signal; and
transmitting the modulated signal from the configured at least one configurable antenna.

2. The method of claim 1 , further comprising the joint modulation controller, based on the received at least one operating condition parameter, selecting a bit grouping method that treats all information bits equally by one or more coding groups.

3. The method of claim 1 , further comprising the joint modulation controller, based on the received at least one operating condition parameter, selecting a bit grouping method that treats information bits differently by selected particular coding groups.

4. The method of claim 1 , further comprising the joint modulation controller, based on the received at least one operating condition parameter, selecting a single encoder to encode all of the groups of bits.

5. The method of claim 1 , further comprising the joint modulation controller, based on the received at least one operating condition parameter, selecting a plurality of encoders to encode the groups of bits, wherein at least one group is encoded with a first encoder and at least one group is encoded with a second encoder.

6. The method of claim 1 , further comprising, wherein each of the groups of bits are priority encoded into a plurality of prioritized data streams, the joint modulation controller allocating each of the plurality of prioritized data streams to a modulation dimension of the transmitter based on the received at least one operating condition parameter and the priority of each data stream.

7. The method of claim 1 , wherein one of the plurality of groups is size limited to a number of configurations in a subset of antenna configurations of all possible antenna configurations, the subset based on the joint modulation controller applying the diversity order and selection.

8. The method of claim 1 , wherein one of the plurality of groups is size limited to a number of antennas in a subset of antennas of all possible antennas, the subset based on the joint modulation controller applying the diversity order and selection.

9. The method of claim 1 , wherein one of the plurality of groups is size limited to a number of frequency subcarriers in a subset of frequency subcarriers of all possible frequency subcarriers, the subset based on the joint modulation controller applying the diversity order and selection.

10. The method of claim 1 , wherein the at least one operating condition parameter comprises a spectral efficiency requirement.

11. The method of claim 1 , wherein the at least one operating condition parameter comprises a spectral modulation based distance metric.

12. The method of claim 1 , wherein the at least one operating condition parameter comprises channel coherence time.

13. The method of claim 1 , wherein the determined at least one diversity order and selection factor configures a plurality of modulators and transmit modes based on the at least one operating condition parameter to reduce a number of potential transmission mode candidates based on the at least one operating condition parameter.

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 at least one operating condition parameter of a transmitter system, channel state information, and channel rank information;
determining at least one diversity order and antenna selection factor based on the received channel state information and at least one operating condition parameter;
receiving as input at the transmitter system a set of information bits;
dividing the set of information bits into a plurality of groups, wherein at least one group is either a signal space keying group or a radiation pattern/polarization group having a size limited by the determined diversity order;
mapping a first group to a plurality of signal space based modulation formats;
mapping the at least one group and each other group to a control signal for a configurable feature of the transmitter system;
generating and modulating a plurality of base signals according to the mapping of the first group onto the modulation format, each of the plurality of base signals generated by a selected number of transmit radio frequency chains using spatial multiplexing, the selected number of transmit radio frequency chains being based on the channel rank information;
configuring at least one configurable feature of a configurable antenna of the transmitter system based on the control signal; and
transmitting the modulated signal from the configured at least one configurable antenna.

Assignees

• Idac Holdings Inc

Inventors

• Ferrante Steven
• Xi Fengjun
• Yang Rui
• Ye Chunxuan
• Pan Kyle Jung-Lin

Classifications

• H04B7/10

  Polarisation diversity; Directional diversity · CPC title

• H04B7/0473

  taking constraints in layer or codeword to antenna mapping into account · CPC title

• H04B7/0626

  Channel coefficients, e.g. channel state information [CSI] · CPC title

• H04B7/0608 Primary

  Antenna selection according to transmission parameters · CPC title