Symbol interlacing method, apparatus and terminal equipment

Abstract

The invention discloses a symbol interleaving method and a symbol interleaving device. A symbol interleaving sequence is generated through the transformation of a sequence S(i). Because the numerical value in the sequence S(i) is corresponding to the serial number of a CE, the symbol interleaving sequence generated through the sequence S(i) can effectively ensure that different cells enable less amount of symbol set in one CE to be mapped to an identical physical resource position, the effect of the interference randomization between the cells can be improved, and the influence of the interference between the cells to the system performance can be reduced. The symbol interleaving sequence can be also obtained by using a Costas sequence, and similarly, the symbol interleaving sequence can ensure that the different cells enable less amount of the symbol set in one CE to be mapped to the identical physical resource position more effectively, so that the effect of the interference randomization between the cells can be improved, the influence of the interference between the cells to the system performance can be reduced, and the generation of the symbol interleaving sequence is also simplified.

Description

technical field [0001] The invention relates to the communication field, in particular to the interweaving technology in the communication system. Background technique [0002] In a mobile communication system, in order to discretize bit errors during signal transmission, signals are usually interleaved. [0003] Taking an Orthogonal Frequency Division Multiplexing (OFDM) system as an example, in each cell, after encoding, bit interleaving, and modulation of the information bit packets to be transmitted in sequence, multiple modulation symbols are obtained, and then Group the obtained multiple modulation symbols to obtain multiple symbol groups; assign the obtained multiple symbol groups to multiple channels, for example, each channel corresponds to one or more channel elements (Channel Element, CE), then you can Multiple symbol groups are evenly allocated to multiple CEs corresponding to different channels, and symbol interleaving is performed on the multiple symbol groups...

AI Technical Summary

Problems solved by technology

[0018] It can be seen that although the existing symbol interleaving technology performs symbol group interleaving and cyclic shifting, the physical resources mapped by the CEs of different cells will still completely collide, and the effect of interference randomization is not good, so that it cannot effectively reduce the impact of inter-cell interference on the system. performance impact

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