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Method and device for selecting modulation code configuration

A technology of modulation coding and modulation mode, which is applied in the field of selection method and device of modulation coding configuration, which can solve the problems of low accuracy and affecting the selection of code rate, etc., and achieve the effect of large throughput and high spectral efficiency

Active Publication Date: 2013-01-02
POTEVIO INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0036] (3) The accuracy of MCS selection is low
Once the modulation method is selected incorrectly, it will further affect the selection of the code rate

Method used

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  • Method and device for selecting modulation code configuration
  • Method and device for selecting modulation code configuration
  • Method and device for selecting modulation code configuration

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Embodiment Construction

[0061] In order to make the purpose, technical means and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0062] The basic idea of ​​the present invention is: under the target BLER, firstly determine the most suitable coordinating code rate for various modulation modes, and then perform MCS selection among various modulation modes and coordinating code rates.

[0063] image 3 It is a specific flow chart of the selection method of the modulation and coding configuration in the present invention. like figure 1 As shown, the method includes:

[0064] Step 301, for each block error rate, in various modulation modes, save the RBIR corresponding to each code rate to be selected under the AWGN channel.

[0065] In each modulation mode, there is a code rate set, which includes all candidate code rates that can be combined with the modulation mode.

[0066] In this step, a ...

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Abstract

The invention discloses a method for selecting modulation code configuration. The method comprises that: the current RBIRm corresponding to each modulation mode m is determined according to the SINR of all subcarriers, and RBIR corresponding to each code rate to be selected under the modulation mode is determined according to target error rate; the matching code rate of the modulation mode is selected from the determined RBIR corresponding to the code rate to be selected under the modulation mode, and finally, a product obtained through multiplying bit number carried by modulation symbols under each modulation mode by the matching code rate of the modulation mode is calculated, a maximum value is selected from all products, and the modulation mode and the code rate corresponding to the maximum value are used as the selected results of the modulation code configuration. The invention additionally provides a device for selecting the modulation code configuration. The invention has the advantages that the spectral efficiency is maximized and the throughput is maximized on the premise that the BLER performance is guaranteed.

Description

technical field [0001] The present invention relates to various wireless communication systems, in particular to a method and device for selecting modulation and coding configurations. Background technique [0002] In a wireless communication system, link adaptation technology selects an appropriate combination of modulation scheme and coding rate according to the Channel Quality Indicator (CQI) fed back by the control channel, so that the throughput of the system can be maximized. The technique is called Modulation Coding Scheme (MCS) selection. MCS selection needs to use an Effective SNR Mapping (ESM) method to predict the Block Error Rate (Block Error Rate, BLER) performance under the current channel state, so as to select an appropriate modulation method and coding rate. [0003] Channels in wireless communication systems are affected by mobile speed and multipath, and often have time selectivity and frequency selectivity. In the OFDM (Orthogonal Frequency Division Mul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L27/26
Inventor 张曦林郑辰
Owner POTEVIO INFORMATION TECH CO LTD