A symbol interleaving and deinterleaving method and device for adaptive three-dimensional information

A symbol interleaving and self-adaptive technology, applied in digital transmission systems, electrical components, error prevention, etc., to achieve the effect of improving system performance, strong adaptability, and strong achievability

Active Publication Date: 2017-06-30
南京易太可通信技术有限公司
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  • 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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  • A symbol interleaving and deinterleaving method and device for adaptive three-dimensional information
  • A symbol interleaving and deinterleaving method and device for adaptive three-dimensional information
  • A symbol interleaving and deinterleaving method and device for adaptive 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 mo...

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Abstract

The invention discloses a method and device for symbol interleaving and deinterleaving adaptive to the three-dimensional information of bandwidth, number of spatial data streams and modulation modes. The method is as follows: the sending end calculates the most Optimal interleaving depth performs symbol interleaving on the transmitted data. At the same time, the receiving end obtains the corresponding three parameter information by analyzing the signaling field in the physical layer frame, uses the same calculation method to obtain the interleaving depth, and performs symbol deinterleaving on the received data. In order to improve the processing speed of the system, the optimal interleaving depth can also be obtained by querying the pre-stored three-dimensional interleaving depth comparison table instead of the real-time calculation method. The present invention also provides an adaptive interleaving and deinterleaving device adopting the above method, which can make full use of the bandwidth, the number of spatial data streams and modulation mode information to adaptively perform interleaving and deinterleaving without increasing the complexity of the system, which can obviously improve the system performance .

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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Patent Type & Authority Patents(China)
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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