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Method and system for an alternating channel delta quantizer for 2x2 mimo pre-coders with finite rate channel state information feedback

A technology of precoding and alternating mode, applied in the field of signal processing, can solve problems such as increased cost, increased volume, and increased complexity

Inactive Publication Date: 2008-08-20
BROADCOM CORP
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  • Abstract
  • Description
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Problems solved by technology

[0006] Due to the increased volume, increased complexity, and increased cost caused by increased power consumption, multi-antenna systems are limited from being widely used in wireless communications

Method used

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  • Method and system for an alternating channel delta quantizer for 2x2 mimo pre-coders with finite rate channel state information feedback
  • Method and system for an alternating channel delta quantizer for 2x2 mimo pre-coders with finite rate channel state information feedback
  • Method and system for an alternating channel delta quantizer for 2x2 mimo pre-coders with finite rate channel state information feedback

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Embodiment Construction

[0048]Embodiments of the present invention introduce a method and system for alternate channel delta quantization for a 2x2 MIMO precoder with finite rate channel state information feedback. A method and system for alternate channel delta quantization of a 2x2 MIMO precoder with finite rate channel state information feedback comprising quantizing changes in channel state information in a 2x2 MIMO precoding system onto a codebook using a cost function , and alternate between two codebooks, where each codebook includes one or more unitary matrices. The channel state information is a matrix V generated by singular value decomposition (SVD) or geometric mean decomposition (GMD). The cost function f(A) is defined by the following relationship:

[0049] f ( A ) = ( 1 N Σ j = ...

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Abstract

The present invention discloses a method and system for alternate channel delta quantization of a 2×2 MIMO precoder with finite rate channel state information feedback, including: using a cost function to convert the channel state information on the 2×2 MIMO precoder system Changes are quantized onto codebooks, and alternate between two codebooks, where each codebook includes one or more unitary matrices. The channel state information is a matrix V generated by singular value decomposition or geometric mean decomposition. The cost function f(A) is defined by the right relation, where A is a matrix of N×N, a ij is the element (i, j) of matrix A. The one or more unitary matrices are generated from the first matrix and the second matrix. The first matrix and the second matrix can be generated using Givens decomposition.

Description

technical field [0001] The present invention relates to signal processing for communication systems, and more particularly, the present invention relates to a method and system for alternate channel delta quantization for 2x2 MIMO precoders with finite rate channel state information feedback. Background technique [0002] Mobile communication has changed the way people communicate, and mobile phones have become necessities in people's daily life from the original luxury goods. Mobile phone use today is governed by social conditions rather than hindered by geography or technology. While voice connectivity fulfills a basic need for communication, where mobile voice connectivity continues to penetrate even further into everyday life, mobile Internet will be the next step in the mobile communications revolution. The mobile Internet has naturally become a common source of everyday information, and simple and universal mobile access to this data service will be the way to go. ...

Claims

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Application Information

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IPC IPC(8): H04B7/04H04L1/06
Inventor 马克·肯特文科·厄斯戈郑军尤里·兰道
Owner BROADCOM CORP
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