ECC (error correction code) decoding controlling method used for data communication

Abstract

The invention discloses an ECC (error correction code) decoding controlling method used for data communication. In view of the unpredictability of the signal quality at the data receiving end, at least two check matrices with different correcting capabilities are reconstructed to adapt to the different signal quality encoded data. Accordingly, when the data receiving end receives encode data, in accordance with the signal quality of the encoded data, a check matrix with appropriate correcting ability is selected to decode. So with regard to the relatively high signal quality encoded data, only the using of the check matrix with low correcting ability is capable of ensuring that the error rate is low enough, and the power dissipation and time delay of decoding at the data receiving end are saved. Consequently, not only can enough low BER(bit error rate) at the data receiving end be ensured, but also the power dissipation and time delay of decoding at the data receiving end is taken into consideration as long as the signal quality at the data receiving end has a certain randomness.

Description

technical field [0001] The present invention relates to data communication technology, in particular to an ECC (Error Correcting Code, error checking and correction) decoding control method for data communication. Background technique [0002] In the prior art, various digital communication systems such as broadcasting systems, navigation and positioning systems, etc. usually use LDPC codes (LOW-Density Parity-Check codes, low-density parity-check codes) to Solve the problem of error correction in order to reduce the BER (Bit Error Rate) in data communication. [0003] However, since the encoded data sent by the data sending end will be affected by uncertain factors such as transmission distance and transmission interference during transmission, the data sending end cannot predict the signal quality of the encoded data received by the data receiving end. Therefore, in order to ensure the data The receiving end can maintain a sufficiently low BER under various influencing fa...

AI Technical Summary

Problems solved by technology

[0003] However, since the encoded data sent by the data sending end will be affected by uncertain factors such as transmission distance and transmission interference during transmission, the data sending end cannot predict the signal quality of the encoded data received by the data receiving end. Therefore, in order to ensure the data The receiving end can maintain a sufficiently low BER under various influencing factors. Both the data sending end and the data receiving end must use the LDPC code with the highest error correction capability. However, this will cause a huge decoding power consumption at the data receiving end. and delay

[0004] It can be seen that in the prior art, in order to ensure that the BER of the data receiving end is low enough, the decoding power consumption and delay of the data receiving end cannot be taken into account at the same time.

Images