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Symbol interlacing and de-interlacing method and device adaptive to three-dimensional information

A symbol interleaving and self-adaptive technology, applied in digital transmission systems, electrical components, error prevention, etc., to achieve the effects of strong realizability, strong adaptability, and accelerated processing speed

Active Publication Date: 2014-12-03
南京易太可通信技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It not only solves the problem that the traditional symbol interleaving cannot be adaptively interleaved according to the bandwidth, the number of spatial data streams and the modulation method, but also solves the problem that the interleaving depth needs to be obtained through a large number of statistics and simulations, which can greatly improve the system performance

Method used

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  • Symbol interlacing and de-interlacing method and device adaptive to three-dimensional information
  • Symbol interlacing and de-interlacing method and device adaptive to three-dimensional information
  • Symbol interlacing and de-interlacing method and device adaptive to three-dimensional information

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Embodiment 1

[0044] Such as figure 1 As shown, taking 1080MHz bandwidth, 64QAM modulation, and one spatial stream as an example, a symbol interleaving and deinterleaving method adaptive to the three-dimensional information of the bandwidth, the number of spatial data streams, and the modulation method includes the following steps:

[0045] (1) The sending end calculates the interleaving depth based on the bandwidth used for sending data, the number of spatial data streams, and the modulation method. The calculation formula is:

[0046] (Formula 1)

[0047]

[0048] Among them, argmin{} means a that makes the value in the brackets the smallest t the value of N SD The number of constellation modulation symbols contained in each OFDM symbol corresponding to the bandwidth used by the user to send data, N BPSCS Number of bits per constellation modulation symbol for each spatial stream corresponding to the modulation mode used by the user to send data, N SS is the number of spatial da...

Embodiment 2

[0063] The difference between embodiment 2 and embodiment 1 is: the method for obtaining the interleaving depth in step (1) and step (5) of the symbol interleaving and deinterleaving method of the adaptive bandwidth, the number of spatial data streams, and the three-dimensional information of the modulation mode in embodiment 1 The methods are different, the method of obtaining the interleaving depth is different for the interleaving depth calculation module at the sending end and the interleaving depth calculation module at the receiving end of the device for symbol interleaving and deinterleaving of the three-dimensional information of the adaptive bandwidth, the number of spatial data streams, and the modulation mode, and the other parts are the same as those in the embodiment 1 is the same.

[0064] In the method for symbol interleaving and deinterleaving of the three-dimensional information of the adaptive bandwidth, the number of spatial data streams, and the modulation mod...

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Abstract

The invention discloses a symbol interlacing and de-interlacing method and device adaptive to three-dimensional, namely the bandwidth, the number of spatial data flow and the modulation manner, information. The method comprises that a transmitting end interlaces symbols of transmission data in the optimal interlacing depth which is calculated according to the different bandwidths, the number of spatial data streams and the modulation manners; and a receiving end parses signaling fields in frames of a physical layer to obtain information of the three corresponding parameters, obtains the interlacing depth in the same calculation method, and de-interlaces symbols of the reception data. To improve the processing speed of the system, the optimal interlacing depth can be obtained by querying a pre-stored three-dimensional interlacing depth parallel table instead of real-time calculation. Under the condition that the system complexity is not improved, the information of the bandwidth, the number of spatial data flow and the modulation manner is fully utilized to implement interlacing and de-interlacing, and the system performance can be obviously improved.

Description

technical field [0001] The invention relates to a symbol interleaving and deinterleaving method and device for adaptive three-dimensional information, belonging to the technical field of wireless communication systems. Background technique [0002] In communication systems, due to noise, channel fading, etc., errors will occur during signal transmission. Using channel coding to process the signal accordingly can make the system have certain error correction ability and anti-interference ability. However, under multipath fading and fast-changing channel conditions, bit errors often occur in clusters. For this situation, channel coding that can only detect single errors and not too long error strings always shows more than enough power. In order to overcome this difficulty, people often combine channel coding and interleaving technology, that is, rearrange the coded signals according to certain rules, so that the long series of errors are discretized, and at the same time use...

Claims

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Application Information

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IPC IPC(8): H04L1/00
Inventor 何世文王海明黄永明闫文李长庚张军
Owner 南京易太可通信技术有限公司
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