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Symbol interleaving and de-interleaving method and device adaptive to modulation coding scheme

A modulation and coding scheme and symbol interleaving technology, applied in the field of wireless communication systems, can solve the problem that the optimal performance of the modulation and coding scheme cannot be achieved to the maximum extent, and achieve high packet error rate performance gain, improved performance, and strong adaptability. Effect

Active Publication Date: 2014-11-26
南京易太可通信技术有限公司
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Problems solved by technology

[0005] Purpose of the invention: the present invention aims to use the basic information of the physical layer signaling (SIG) field of the wireless communication system and under the premise of not adding additional communication service information, the transmitting end and the receiving end respectively design and adapt to different bandwidths and modulation coding schemes The symbol interleaving and deinterleaving method solves the following problems in the traditional symbol interleaving and deinterleaving methods: the existing symbol interleaving implementation device adopts the same interleaving depth for all modulation and coding schemes under each bandwidth, however, this interleaving method does not maximize optimal performance for all modulation-coding schemes

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  • Symbol interleaving and de-interleaving method and device adaptive to modulation coding scheme

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[0022] In the following, a millimeter wave wireless local area network (IEEE 802.11aj) single user situation, 16QAM modulation under 1080MHz bandwidth, and a code rate of 1 / 2 are taken as an example, in conjunction with the accompanying drawings, the specific details of the symbol interleaving and deinterleaving method and device adaptive to the modulation and coding scheme of the present invention The implementation mode is described in further detail. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading the present invention, modifications to various equivalent forms of the present invention by those skilled in the art all fall within the appended rights of this application.

[0023] In the embodiment of the present invention, IEEE 802.11aj supports two bandwidths of 540MHz and 1080MHz. The modulation and coding scheme is shown in Table 1. The highest mo...

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Abstract

The invention discloses a symbol interleaving and de-interleaving method and device adaptive to a modulation coding scheme and belongs to the technical field of wireless communication. The method is as follows: a transmitter adopts different optimal interleaving depths to carry out symbol interleaving processing on sending data for combination values of different channel bandwidths and different modulation coding schemes; and a receiver carries out de-interleaving processing through obtaining of the bandwidth of a physical-layer signaling field and information of the modulation coding scheme and selection of an optimal interleaving depth and restores data before the interleaving. The invention also provides an interleaving and de-interleaving device adopting the method so as to realize symbol interleaving and de-interleaving functions adaptive to the modulation coding scheme. Compared with the prior art, the symbol interleaving and de-interleaving method and device are capable of improving significantly error-packet-rate performance of a wireless communication system under a condition that no extra signaling communication service volume is introduced.

Description

technical field [0001] The invention relates to a symbol interleaving and deinterleaving method and device adaptive to a modulation and encoding scheme, and belongs to the technical field of wireless communication systems. Background technique [0002] In order to resist burst errors caused by channel fading and improve the robustness of the transmitted signal, the communication system needs a series of sending and receiving processes to improve the performance of the communication system, such as the interleaving processing of the sending data stream by the transmitter and the receiving data stream by the receiver Perform deinterleaving processing, that is, discretize burst error blocks, and then give full play to the ability of forward error correction decoding to correct discrete errors, and achieve the purpose of improving the performance of the communication system. [0003] Both the wireless local area network standards IEEE 802.11n and IEEE 802.11ac adopt multiple inp...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L27/26
Inventor 何世文王海明黄永明李长庚闫文张军
Owner 南京易太可通信技术有限公司
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