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Method and device for sending and receiving in-phase and quadrature data

A kind of technology of in-phase quadrature and transmission method

Active Publication Date: 2019-01-18
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The embodiment of the present invention provides a method and device for sending and receiving in-phase and quadrature data, which is used to solve the IQ data to be obtained in the prior art. When performing CPRI frame mapping, the mapping is difficult and the accuracy is low and poor compatibility

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  • Method and device for sending and receiving in-phase and quadrature data
  • Method and device for sending and receiving in-phase and quadrature data
  • Method and device for sending and receiving in-phase and quadrature data

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Embodiment 1

[0040] Embodiment 1 of the present invention proposes a method for sending IQ data, such as Figure 5 As shown, the specific process is as follows:

[0041] Step 501, obtaining a plurality of first IQ data to be transmitted.

[0042] Wherein, the multiple first IQ data may be obtained based on the same sampling rate, or may be obtained based on different sampling rates. Embodiment of the present invention one here will be as follows (as Figure 6 ) Four first IQ data obtained based on different sampling rates as an example to elaborate on the technical solution proposed in Embodiment 1 of the present invention:

[0043] The first IQ data obtained: the first first IQ data with a sampling rate of 100MSPS and a data bit width of 11bit (corresponding to Figure 6 In 601), it should be noted that, based on the first first IQ data obtained at a sampling rate of 100MSPS, each clock has I-way data, so it is not necessary to specify the positional relationship of the IQ data with an...

Embodiment 2

[0088] Based on the implementation principle of the first embodiment of the above method, at the sending end, the second embodiment of the present invention proposes an in-phase and quadrature data sending device, the specific structure of which is as follows Figure 7 Shown:

[0089] The determining unit 701 is configured to, for each obtained first IQ data, determine an indication signal corresponding to the first IQ data in the obtained first IQ data; according to the determined indication signal, in the first IQ data The second IQ data that needs to be mapped to the public radio interface CPRI frame is determined in the data.

[0090] Wherein, the above-mentioned determining unit 701 is specifically configured to determine the original bit width value of the second IQ data and the multi-clock cycle value corresponding to the second IQ data; and according to the determined original bit width value and multi-clock cycle value, determine the The specified bit width correspon...

Embodiment 3

[0108] Further, on the basis of the first method embodiment above, at the sending end, the third embodiment of the present invention also proposes a method for sending in-phase quadrature IQ data, such as Figure 9 As shown, the specific process is as follows:

[0109] Step 901, obtain a plurality of IQ data to be transmitted.

[0110] Wherein, multiple IQ data can be obtained based on the same sampling rate, and can also be obtained based on different sampling rates. Embodiment 3 of the present invention will be described as follows (such as Figure 10 ) Four IQ data obtained based on different sampling rates are taken as an example to elaborate on the technical solution proposed here in Embodiment 3 of the present invention:

[0111] The first IQ data obtained: IQ data with a sampling rate of 12.5MSPS and a data bit width of 11bit (corresponding to Figure 10 10-01 in).

[0112] The second IQ data obtained: IQ data with a sampling rate of 50MSPS and a data bit width of 12...

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Abstract

The invention discloses a method and a device for transmitting and receiving in-phase quadrature (IQ) data. In view of each acquired first IQ data, the following steps are executed: in the acquired first IQ data, an indication signal corresponding to the first IQ data is determined; according to the determined indication signal, a second IQ data in need of common public radio interface (CPRI) frame mapping is determined in the first IQ data; parallel-to-serial conversion is carried out on the determined second IQ data to obtain a third IQ data with a specified bit width corresponding to the second IQ data; splicing processing is carried out on the third IQ data; the spliced data is mapped to an IQ data bearing field contained by a basic frame in the CPRI frame to obtain the CPRI frame for transmitting and transmitting the CPRI frame. By adopting the above technical scheme of the invention, problems of large mapping difficulty, low accuracy and poor compatibility when the acquired IQ data is subjected to CPRI frame mapping in the prior art can be solved.

Description

[0001] The application of the present invention is a divisional application of the invention application with the filing date of March 23, 2012, the application number of 201210080487.X, and the title of the invention "Method and Device for Sending and Receiving In-phase and Quadrature Data". technical field [0002] The invention relates to the technical field of digital signal processing, in particular to a method and device for sending and receiving in-phase and quadrature data. Background technique [0003] The common public radio interface (CPRI, Common Public Radio Interface) frame protocol can make flexible and effective differences between products by defining the interface specification between the radio equipment controller (REC, Radio Equipment Controller) and the radio equipment (RE, Radio Equipment) At the same time, each component of a device can better benefit from technological progress in their respective technical fields, thereby shortening the product devel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/34H04W28/06
CPCH04L27/34H04W28/06
Inventor 张文唐展波廖世文卢柱芳冯文龙
Owner COMBA TELECOM SYST CHINA LTD