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Method and apparatus for fast implementing pre-coding

A precoding method and precoding technology, applied in diversity/multi-antenna systems, space transmit diversity, etc., can solve the problems of system resource occupation and tediousness, and achieve the effects of saving system resources, ensuring accuracy, and ensuring data processing accuracy

Active Publication Date: 2009-07-08
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the required precoding codebook is usually calculated in real time each time precoding is performed, which is too cumbersome, brings a certain delay, and takes up a lot of system resources

Method used

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  • Method and apparatus for fast implementing pre-coding
  • Method and apparatus for fast implementing pre-coding
  • Method and apparatus for fast implementing pre-coding

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Embodiment Construction

[0037] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0038] figure 1 It is a structural diagram of a device for rapidly realizing precoding in this embodiment, and the device includes: a precoding codebook construction module, a precoding codebook storage unit, and a precoding mode setting module;

[0039] The precoding codebook table construction module is used to calculate the precoding codebook according to the number of eNodeB side antennas and the number of mapping layers, and construct the precoding codebook table accordingly and store it in the precoding codebook storage unit;

[0040] The pre-coding mode setting module is used to pre-set different terminal speed levels and the pre-coding mode corresponding to each terminal speed level;

[0041] The precoding module is used to receive the motion speed fed back when the terminal accesses the base station, determine the precoding mode to be ...

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PUM

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Abstract

The invention discloses a method and a device for rapidly implementing pre-coding. The device comprises a pre-coding module, a pre-coding code book table storage unit, a pre-coding code book table construction module and a pre-coding mode setting module. The method comprises the following steps: (A) the pre-coding code book table construction module establishes and stores a pre-coding code book table; (B) the pre-coding mode setting module sets different terminal velocity grades and relevant pre-coding modes; (C) when a terminal accesses to a base station, the pre-coding module determines a standby pre-coding mode according to the terminal velocity grade of the terminal, and searching pre-coding code books from the pre-coding code book table according to the number of the current base station-side antennae and the number of the current base station-side mapping layers; and (D) the pre-coding module performs the pre-coding operation by use of the standby pre-coding mode and the searched pre-coding code books. The method ensures the data processing accuracy while reducing the complexity of pre-coding operation, reduces the processing time delay, saves the system resources, and ensures the pre-coding accuracy.

Description

technical field [0001] The invention relates to a multi-antenna processing technology in the field of mobile communication, in particular to a method and device for quickly realizing precoding. Background technique [0002] Generally speaking, precoding is divided into single-antenna transmission, spatial multiplexing, and transmit diversity precoding. What kind of operation mode is used by the system? ) physical layer sampling analysis indicators (such as rank indication information (Rank Indication, referred to as RI), precoding matrix indication information (Precoding Matrix Indicator, referred to as PMI) and channel quality indication information (ChannelQuality Indication, referred to as CQI)) to determine , and then configure and implement at the physical layers on both sides through the downlink control channel. [0003] Suppose the precoding input is: x(i)=[x (0) (i)...x (v-1) (i)] T (i=0,1,...,M symb -1), the output of the precoding module is: y(i)=[...y (p) (...

Claims

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Application Information

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IPC IPC(8): H04B7/06
Inventor 梅时春王衍文
Owner ZTE CORP
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