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Selection method of modulating and coding scheme of multi-antenna system

A technology of multi-antenna system and coding scheme, applied in the field of modulation and coding scheme selection of multi-antenna system, can solve the problems of occupying storage space at the receiving end, impossible storage space, affecting the performance of communication system, etc.

Inactive Publication Date: 2010-08-18
LINK TECH INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the SNR is not estimated correctly, whether the estimated value is higher or lower than the actual SNR, it will affect the performance of the communication system
In addition, the table required by the adjustment method will occupy a large storage space at the receiving end and increase its implementation cost
Even, if it is applied to a transmission architecture with more than three antennas, the required storage space will increase exponentially, making its realization almost impossible

Method used

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  • Selection method of modulating and coding scheme of multi-antenna system
  • Selection method of modulating and coding scheme of multi-antenna system
  • Selection method of modulating and coding scheme of multi-antenna system

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Embodiment Construction

[0014] figure 2 A flowchart showing a method for selecting a modulation and coding scheme for a multi-antenna system according to an embodiment of the present invention. In step 201 , set the number of spatial stream signals sent by the multi-antenna system to 1, and proceed to step 202 . In step 201, use the multi-antenna system and different modulation and coding schemes to transmit signals, and enter step 203. In step 203 , compare the modulation and coding schemes applied in step 201 according to the reception quality of the transmitted signal to determine the most suitable modulation and coding scheme, and proceed to step 204 . In this embodiment, the most suitable modulation and coding scheme is the modulation and coding scheme corresponding to the highest data rate. In step 204, add 1 to the number of spatial stream signals sent by the multi-antenna system, and enter step 205. In step 205 , transmit signals using the multi-antenna system and different modulation and...

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Abstract

The invention relates to a modulating and coding scheme of a communication system. According to the selection method of the modulating and coding scheme, a multi-antenna system transmits signals firstly according to the modulating and coding scheme of a single space series flow signal and decides a proper modulating and coding scheme; and then, the multi-antenna system gradually increases the transmitted series flow signals and decides the proper modulating and coding scheme until finds the optimal modulating and coding scheme.

Description

technical field [0001] The invention relates to a modulation and coding scheme method of a communication system, in particular to a method for selecting a modulation and coding scheme of a multi-antenna system. Background technique [0002] In the application of wireless local area network Wi-Fi, for example, in the system applying the 802.11n specification specified by the Institute of Electrical and Electronics Engineers (IEEE), the receiving end is required to suggest the modulation and coding of the sending end according to the transmission environment Modulation and Coding Scheme (MCS), and adjust the modulation and coding scheme in real time according to the change of the transmission environment to achieve the maximum throughput (throughput). [0003] The Automatic Rate Fallback (ARF) algorithm is actually quite common at present. It prioritizes various modulation and coding schemes of the applied communication system, and observes packet errors within a fixed period ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04L1/00
Inventor 廖彦钦杜勇赐陈俊才温俊贤
Owner LINK TECH INC