A joint processing method and device for channel coding and Gray mapping high-order modulation
A technology of Gray mapping and high-order modulation, applied in the direction of adjustment of channel coding, use of forward error control, digital transmission system, etc., can solve problems such as unfavorable polar code optimization structure, and achieve the effect of improving overall throughput
Active Publication Date: 2021-06-18
ZTE CORP
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Problems solved by technology
[0003] The technical problem solved by the solution provided according to the embodiment of the present invention is that when the polar code is directly transmitted using high-order modulation, the error probability of each symbol will change with the change of the symbol, resulting in the error rate experienced by each symbol. The channel is dynamic, which is not conducive to the optimal construction of polar codes
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[0044] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0045] figure 1 It is a flow chart of a joint processing method for channel coding and Gray mapping high-order modulation provided by an embodiment of the present invention, as shown in figure 1 shown, including:
[0046] Step S101: Signal encoding the received information bits belonging to the low SNR channel to obtain the first codeword and save it;
[0047] Step S102: signal-encode the received information bits belonging to the second-lowest signal-to-noise ratio to obtain a second codeword and save it;
[0048] Step S103: saving the received information bits with high SNR as the third codeword;
[0049] Step S104: Putting the saved first codeword, ...
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The invention discloses a method and device for joint processing of channel coding and Gray mapping high-order modulation, and relates to the technical field of communication information transmission. The first codeword is saved; the received information bits belonging to the second-lowest signal-to-noise ratio are signal encoded to obtain the second codeword and stored; the received information bits belonging to the high signal-to-noise ratio Save as the third code word; put the saved first code word, the second code word and the third code word into the position converter of the sending end to perform position conversion, and obtain two groups of bit streams; The two sets of bit streams are sent to the Gray-mapped high-order modulation M-QAM modulator for coding and modulation, and the modulated symbols are sent to the channel for transmission. The present invention makes full use of high-reliability bit information in high-order modulation, and improves the overall throughput of coding modulation.
Description
technical field [0001] The present invention relates to the technical field of communication information transmission, in particular to a combined processing method and device of channel coding and Gray mapping high-order modulation. Background technique [0002] As the transmission speed of mobile communication becomes faster and faster, the utilization rate of wireless spectrum is required to be higher and higher. As one of the necessary methods to improve the utilization rate of spectrum, high-order modulation has become an essential technology in mobile communication, and channel coding is the guarantee An essential technology for the reliability of information transmission. For channel coding, in order to transmit information more efficiently and reliably, it is often necessary to know the reliability of bits (symbols) rather than the reliability of symbols, and the bit reliability of high-order modulation mapped to a symbol is usually different Yes, this requires a jo...
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IPC IPC(8): H04L1/00
CPCH04L1/0009H04L1/0056H04L1/0076
Inventor 蒙波
Owner ZTE CORP