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Method and device for transmitting IQ (intelligence quotient) data

A data transmission method and data technology, applied in the direction of digital transmission system, transmission system, communication between multiple stations, etc., can solve the problems of CPRI interface traffic surge, hardware cost increase, etc., to improve efficiency and reduce bit width. Effect

Active Publication Date: 2012-01-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventor found that the prior art has the following disadvantages: in the case of increased bandwidth or carrier, direct transmission of the original undistorted IQ data will lead to a surge in CPRI interface traffic, and it is necessary to physically increase the number of CPRI transmission interfaces or increase the line rate of CPRI Three, in order to be able to adapt to the needs of greater IQ data traffic
This results in a substantial increase in hardware costs

Method used

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  • Method and device for transmitting IQ (intelligence quotient) data
  • Method and device for transmitting IQ (intelligence quotient) data
  • Method and device for transmitting IQ (intelligence quotient) data

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] In order to make the above objects, features and advantages of the embodiments of the present invention more comprehensible, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] An embodiment of the present invention provides an IQ data transmission method, figure 1 It is a schematic flow chart of an IQ data transmission method accor...

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Abstract

The embodiment of the invention discloses a method for transmitting IQ (intelligence quotient) data, which comprises the following steps: dividing NSAM sampling points in a single-antenna single-carrier-wave symbol block in the IQ data to be transmitted into p data blocks, wherein each data block comprises q sampling points; respectively determining public exponent parts exp, exponential functions f(exp) and respective mantissa parts of the q sampling points in each data block; respectively mapping the public exponent parts and the respective mantissa parts of the q sampling points in each data block to the corresponding data block; and transmitting the p data blocks through a common public radio interface (CPRI) frame. By adopting the method provided by the embodiment, the NSAM sampling points are divided into the p data blocks; each data block comprises the q sampling points; after the q sampling points are determined as the public exponent parts, the exponential functions and the mantissa parts, the q sampling points are mapped in the data blocks; the bit width needed for the transmission of the data can be decreased; and the transmission efficiency of the data is improved.

Description

technical field [0001] The invention relates to the field of data transmission in the technical field of wireless communication, in particular to an IQ data transmission method and device. Background technique [0002] CPRI (Common Public Radio Interface) is an interface standard between REC (Radio Equipment Controller, wireless equipment controller) and RE (Radio Equipment, wireless equipment) in wireless base station equipment developed by several communication equipment manufacturers . [0003] In the existing CPRI IQ data transmission mode, each sampling point includes a real part I and an imaginary part Q, and is directly interleaved and transmitted according to the quantization bit width I and Q. [0004] The inventor found that the prior art has the following disadvantages: in the case of increased bandwidth or carrier, direct transmission of the original undistorted IQ data will lead to a surge in CPRI interface traffic, and it is necessary to physically increase th...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04B7/26
CPCH04L27/361
Inventor 包盛花宁科蒋亚军
Owner HUAWEI TECH CO LTD