Transmission of symbols in a MIMO environment using Alamouti based codes

Patent metadata

Field	Value
Publication number	US-9281882-B2
Application number	US-201313944240-A
Country	US
Kind code	B2
Filing date	Jul 17, 2013
Priority date	Sep 4, 2008
Publication date	Mar 8, 2016
Grant date	Mar 8, 2016

Abstract

A method for transmitting data in a multiple-input-multiple-output space-time coded communication using a mapping table mapping a plurality of symbols defining the communication to respective antennae from amongst a plurality of transmission antennae and to at least one other transmission resource. The mapping table may comprise Alamouti-coded primary segments and may also comprise secondary segments, comprising primary segments. The primary segments in the secondary segments may be defined in accordance to an to Alamouti based code pattern applied at the segment level to define a segment-level Alamouti based code.

First claim

What is claimed is:

1. A method for wireless communication, comprising:
receiving data at a wireless receiver, wherein:
the data include a plurality of symbol sets, each symbol set having been mapped to respective transmission antenna from among a plurality of transmission antenna using a mapping table; and
the data were transmitted over the mapped plurality of transmission antenna using a plurality of transmission resources,
wherein the data include symbols forming at least a part of a segment-level Alamouti based code in the mapping table;
wherein the mapping table comprises a plurality of primary segments each comprising a plurality of components corresponding to individual symbols together defining a symbol-level Alamouti based code; and
wherein for at least one of the primary segments, the plurality of components within the at least one primary segment are mapped to the plurality of transmission resources, wherein at least two of the plurality of transmission resources are separated by at least one transmission resource to which none of the plurality of components within the at least one primary segment are mapped.

2. The method of claim 1 , wherein the data include symbols forming part of a symbol-level Alamouti based code.

3. The method of claim 2 , wherein the data include symbols that form a part of both the symbol-level Alamouti based code and the segment-level Alamouti based code.

4. The method of claim 1 , wherein the mapping table comprises:
at least one secondary segment comprising a plurality of primary segments together defining the segment-level Alamouti based code.

5. The method of claim 4 , wherein the each of at least one secondary segment comprise four primary components.

6. The method of claim 4 , wherein the segment-level Alamouti based code defined by the at least one secondary segment is a partial Alamouti based code.

7. The method of claim 4 , wherein the at least one secondary segment each comprise a plurality of primary segments together defining a segment-level Alamouti based code at the primary segment level, the mapping table further comprising at least one tertiary segment comprising a plurality of secondary segments together forming a segment-level Alamouti based code at the secondary segment level.

8. The method of claim 1 , wherein one or more of the primary segments have been omitted from the mapped table.

9. The method of claim 8 , wherein each of the plurality of transmission resources of the mapping table represents separate subcarriers.

10. A wireless receiver, comprising:
receive circuitry configured to receive data;
wherein the data includes a plurality of symbol sets, each symbol set having been mapped to respective transmission antenna from among a plurality of transmission antenna using a mapping table;
wherein the data was transmitted over the mapped plurality of transmission antenna using a plurality of transmission resources;
wherein the data include symbols forming at least a part of a segment-level Alamouti based code in the mapping table;
wherein the mapping table comprises a plurality of primary segments each comprising a plurality of components corresponding to individual symbols together defining a symbol-level Alamouti based code; and
wherein for at least one of the primary segments, the individual symbols plurality of components within the at least one primary segment are mapped to the plurality of transmission resources, wherein at least two of the plurality of transmission resources are separated by at least one transmission resource to which none of the plurality of components within the at least one primary segment are mapped.

11. The wireless receiver of claim 10 , wherein the data include symbols forming part of a symbol-level Alamouti based code.

12. The wireless receiver of claim 11 , wherein the data include symbols that form a part of both the symbol-level Alamouti based code and the segment-level Alamouti based code.

13. The wireless receiver of claim 10 , wherein the mapping table comprises:
at least one secondary segment comprising a plurality of primary segments together defining the segment-level Alamouti based code.

14. The wireless receiver of claim 10 , wherein one or more of the primary segments have been omitted from the mapped table.

15. The wireless receiver of claim 14 , wherein the each of the plurality of transmission resources of the mapping table represents separate subcarriers.

16. A wireless transmitter, comprising:
transmit circuitry configured to transmit data over a mapped plurality of transmission antenna using a plurality of transmission resources;
wherein the data includes a plurality of symbol sets, each symbol set having been mapped to respective transmission antenna from among the plurality of transmission antenna using a mapping table;
wherein the data include symbols forming at least a part of a segment-level Alamouti based code in the mapping table;
wherein the mapping table comprises a plurality of primary segments each comprising a plurality of components corresponding to individual symbols together defining a symbol-level Alamouti based code; and
wherein for at least one of the primary segments, the plurality of components within the at least one primary segment are mapped to the plurality of transmission resources, wherein at least two of the plurality of transmission resources are separated by at least one transmission resource to which none of the plurality of components within the at least one primary segment are mapped.

17. The wireless transmitter of claim 16 , wherein the data include symbols forming part of a symbol-level Alamouti based code.

18. The wireless transmitter of claim 16 , wherein the mapping table comprises:
at least one secondary segment comprising a plurality of primary segments together defining the segment-level Alamouti based code.

19. The wireless transmitter of claim 16 , wherein one or more of the primary segments have been omitted from the mapped table.

20. The wireless transmitter of claim 19 , wherein each of plurality of transmission resources of the mapping table represents separate subcarriers.

Assignees

• Apple Inc

Inventors

• Novak Robert
• Nikopourdeilami Hosein
• Fong Mo-Han
• Vrzic Sophie

Classifications

• H04L1/0643

  block codes · CPC title

• H04B7/06 Primary

  at the transmitting station · CPC title

• H04L1/0668 Primary

  Orthogonal systems, e.g. using Alamouti codes · CPC title

• H04L1/1812

  Hybrid protocols; Hybrid automatic repeat request [HARQ] · CPC title

• H04L1/0026

  Transmission of channel quality indication · CPC title