Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and Computer Program Product for Precoding

a computer program and precoding technology, applied in the field of communication technology, can solve the problems of loss of transmit performance of transmit antenna, power amplification of transmit antenna cannot be fully used for full power transfer, etc., and achieve the effect of improving the characteristics of the signal

Inactive Publication Date: 2011-05-12
HUAWEI TECH CO LTD
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a method and computer program product for precoding data to be transmitted over wireless networks. The method includes obtaining the total uplink power of a user Equipment (UE) and selecting a codeword from a first codebook with imbalanced power between layers and a second codebook with balanced power between layers if the total uplink power is smaller than or equal to ¾ of the rated total transmit power of the antennas. This method helps to improve the performance of the transmit antenna and maintain full power amplification of the antenna, even if the transmit power is restricted. The computer program product includes a computer program for implementing this method on a computer.

Problems solved by technology

In a case of a high signal-to-noise ratio, if data to be transmitted is being precoded by adopting an existing codebook structure, a loss occurs to a transmit performance of the transmit antenna, and if a transmit power of the transmit antenna is restricted, the power amplification of the transmit antenna can not be completely used for full power transfer.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and Computer Program Product for Precoding
  • Method and Computer Program Product for Precoding
  • Method and Computer Program Product for Precoding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024]The technical solution of the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is obvious that the embodiments to be described are only a part rather than all of the embodiments of the present invention. All other embodiments obtained by persons skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025]FIG. 1 is a flow chart of an embodiment of a precoding method according to the present invention. As shown in FIG. 1, the precoding method in this embodiment includes the following steps.

[0026]In Step 101, a total uplink power of a UE is obtained.

[0027]For example, a BS, for example, an eNodeB, can obtain the total uplink power of the UE, in which the total uplink power can be a total power after the uplink power control. The eNodeB can determine a transmit power that the antenna ne...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method and a computer program product for precoding are provided. The precoding method includes selecting, by a processor, a codeword for precoding data from a codebook, wherein the codebook includes12[010100001100],12[010100001-100],12[100010100001],12[100010-100001],12[100100010001],12[100-100010001],12[010001100100],12[010001100-100],12[100001010100],12[100001010-100],12[010100100001],and12[010100-100001].

Description

[0001]This application is a continuation of U.S. patent application Ser. No. 12 / 983,103, filed on Dec. 31, 2010, which is a continuation of co-pending International Application No. PCT / CN2010 / 075788, filed on Aug. 9, 2010, which designated the United States and was not published in English, and which claims priority to Chinese Application No. 200910091108.5, filed on Aug. 7, 2009, and Chinese Application No. 200910165292.3, filed on Aug. 14, 2009. All of these applications are incorporated herein by reference.TECHNICAL FIELD[0002]The present invention relates to the field of communication technology, and in particular, to a method and a computer program product for precoding.BACKGROUND[0003]The Long Term Evolution-Advanced (LTE-A) is a subsequent evolution of the LTE technology. In the LTE-A, the Single Carrier Frequency Division Multiple Access (SC-FDMA) in the LTE continues to be adopted as a coding mode for the uplink data. The LTE-A can at most support four antennas to transmit ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): H04L27/28H03M7/00
CPCH04B7/043H04B7/0465H04B17/318H04L25/03929H04W72/042H04B17/0057Y02D30/70H04W72/0453H04W72/23
Inventor ZHOU, YONGXINGWU, QIANG
Owner HUAWEI TECH CO LTD