Constellation map mapping method and device

Abstract

The invention discloses a constellation map mapping method and a device. The method comprises the following steps: using a part of bits of a bit sequence to be mapped as a first bit sequence, mapping every m bits in the first bit sequence as a constellation point of a constellation map in a sequence from front to back, mapping the bit positioned in the first preset position onto the first preset bit of the corresponding constellation point for every m bits, mapping the bit positioned in the second preset position onto the second preset bit of the corresponding to constellation point (the reliability of the first preset bit is higher than that of the second preset bit), using the other part of bits of the bit sequence to be mapped as a second bit sequence, mapping every m bits in the second bit sequence as a constellation point of the constellation map in a sequence from front to back, mapping the bit positioned in the first preset position onto the second preset bit of the corresponding constellation point for every m bits, and mapping the bit positioned in the second preset position onto the first preset bit of the corresponding constellation point. The reliability of the code letter bits is furthest balanced.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for mapping a constellation map. Background technique [0002] figure 1 shows the structure of a digital communication system such as figure 1 As shown, a digital communication system consists of a transmitter, a channel, and a receiver. The transmitter usually includes a source, a source coder, a channel coder, and a modulator, and the receiver usually includes a demodulator, channel decoder, etc. In the communication process between the transmitter and the receiver, the transmitter sends data to the receiver through the channel, and there is usually a noise source in the channel. [0003] In a digital communication system, the channel coding link (including channel coding, modulation and demodulation, etc.) is a key part of the physical layer of the entire digital communication. The processing status of the channel coding link determines the effectiveness...

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Problems solved by technology

[0055] Considering the problem in the related art that the reliability of the bits is uneven and affects the link performance due to the different priorities of the bits, the present invention is made. Therefore, the main purpose of the present invention is to provide a constellation map mapping method and device

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