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

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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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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