Information modulation and demodulation method and device
A technology of information modulation and soft information, applied in the field of communication, can solve the problems of mutual information loss of bit stream and system performance degradation, etc.
Active Publication Date: 2021-02-23
HUAWEI TECH CO LTD
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[0004] The bit stream of the same encoded code block is demodulated in parallel at the receiving device, and then the demodulated bit stream is sent to the polar code decoder for decoding to obtain the decoding result, wherein the bit stream of the same encoded code block Parallel demodulation of streams will cause mutual information loss between bit streams, resulting in system performance degradation
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[0043] Embodiments of the present application are described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Those skilled in the art know that, with the emergence of new technologies, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
[0044] The embodiment of the present application provides an information modulation and demodulation method and device, which are used for the receiving device to serially demodulate the un-demodulated bit information by using the decoded codeword sequence, so as to reduce the mutual information gap between the bit streams. loss, and improve the performance of the communication system.
[0045] Please refer to figure 1 , figure 1 A schematic diagram of an application scenario provided by the embodiment of this application, such as fig...
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The embodiment of the present application provides an information modulation and demodulation method and device. The method in the embodiment of the present application includes: the sending device modulates the first target bit stream to obtain the first target symbol, the first target symbol includes the first M-bit information, and the first target symbol includes the first M-bit information. One M-bit information includes the first bit information of the first bit stream, and at least one stuffing bit information; the sending device modulates the second target bit stream to obtain the second target symbol, the second target symbol includes the second M-bit information, and the second target symbol includes the second M-bit information, the first The two M-bit information includes at least the second bit information of the second bit stream, and the third bit information of the third bit stream; the sending device sends the first target symbol and the second target symbol, and the soft information of the first bit information to the receiving device and the soft information of the second bit information are contained in the soft information sequence of the first encoded code block, the soft information sequence of the first encoded code block is used for decoding to obtain the first information bit sequence, and the first information bit sequence is used for demodulating the second Soft information of three bits of information.
Description
technical field [0001] The embodiments of the present application relate to the communication field, and in particular, to an information modulation and demodulation method and device. Background technique [0002] Polar codes (Polar Codes) are a constructable channel coding method that can reach the capacity of binary input discrete memoryless channels. full noise channel. [0003] At present, the polar coded modulation framework is mainly bit interleaver polar coded modulation (BIPCM). Simply cascade with the modulator, and then add the bit stream of the same code block to the receiving device in the same transmission symbol. After the receiving device obtains the received symbol from the sending device, it demodulates the bit stream of the same code block in parallel. Then, the demodulated bit stream is sent to a polar code decoder for decoding to obtain a decoding result. [0004] The bit stream of the same encoded code block is demodulated in parallel at the receivin...
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IPC IPC(8): H04L1/00
CPCH04L1/0008H04L1/0057H04L1/00
Inventor 牛凯周德坤董超于天航
Owner HUAWEI TECH CO LTD