CN102823153B

5G,4G

Title

A PRECODER STRUCTURE FOR MIMO PRECODING

Application Number:

CN2011817909

Publication Date:

28-09-2016

Current Assignee:

Family ID:

Application Date:

06-04-2011

Declaring Company:

Publication Country:

US

Priority Date:

07-04-2010

Title

A PRECODER STRUCTURE FOR MIMO PRECODING

Application Number:

CN2011817909

Family ID:

Publication Country:

US

Publication Date:

28-09-2016

Application Date:

06-04-2011

Priority Date:

07-04-2010

Current Assignee:

Declaring Company:

Abstract  Abstract

The teachings herein provide a method for (700 900) and a device (10 12) its implementation and use of factorized precoder structure it is good in performance and efficiency. In particular the teachings presented claims a bottom of precoder structure which allows a transmission situation of a certain codebook reuse across different comprising from the transmitting antenna (14) of a single uniform linear array (ULA) and from such antenna (14) subset of cross-polarized transmission. According to the structure the overall precoder (36) from a conversion precoder (32) and tuning precoder (34) is configured. antenna subgroup precoder (38) conversion precoder (32) comprises size NT/2 wherein NT represents the total number of antenna ports (98) to consider. offset of beam phase tuning precoder (34) correspondingly controlling antenna subgroup precoder (38) allowing the conversion precoder (32) and cross polarized array of NT/2 antenna unit and antenna unit with the NT co-polarization array are used together.

The teachings herein present a method (700 900) and apparatus (10 12) that implement and use a factorized precoder structure that is advantageous in terms of performance and efficiency. In particular the teachings presented herein disclose an underlying precoder structure that allows for certain codebook reuse across different transmission scenarios including for transmission from a single Uniform Linear Array (ULA) of transmit antennas (14) and transmission from cross-polarized subgroups of such antennas (14). According to this structure an overall precoder (36) is constructed from a conversion precoder (32) and a tuning precoder (34). The conversion precoder (32) includes antenna-subgroup precoders (38) of size ?/t/2 where NT represents the number of overall antenna ports (98) considered. Correspondingly the tuning precoder (34) controls the offset of beam phases between the antenna-subgroup precoders (38) allowing the conversion precoder (32) to be used with cross-polarized arrays of ?/t/2 antenna elements and with co-polarized arrays of ?/t antenna elements.

The teachings herein present a method (700 900) and apparatus (10 12) that implement and use a factorized precoder structure that is advantageous in terms of performance and efficiency. In particular the teachings presented herein disclose an underlying precoder structure that allows for certain codebook reuse across different transmission scenarios including for transmission from a single Uniform Linear Array (ULA) of transmit antennas (14) and transmission from cross-polarized subgroups of such antennas (14). According to this structure an overall precoder (36) is constructed from a conversion precoder (32) and a tuning precoder (34). The conversion precoder (32) includes antenna-subgroup precoders (38) of size ?/ ?/2 where NT represents the number of overall antenna ports (98) considered. Correspondingly the tuning precoder (34) controls the offset of beam phases between the antenna-subgroup precoders (38) allowing the conversion precoder (32) to be used with cross-polarized arrays of ?/?/2 antenna elements and with co-polarized arrays of ?/? antenna elements.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.