Constellation map mapping method and device

A mapping method and constellation diagram technology, applied in the field of constellation diagram mapping methods and devices, can solve problems such as affecting link performance and uneven bit reliability, and achieve the effects of balancing reliability, solving link performance degradation, and enhancing performance

Active Publication Date: 2013-09-11
ZTE CORP
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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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  • Constellation map mapping method and device
  • Constellation map mapping method and device

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Embodiment Construction

[0074] Functional Overview

[0075] As mentioned above, in order to solve the problem in the related art that the reliability of the bits is uneven due to the uneven priority of different bits, which further affects the performance of the link, the present invention provides a constellation map mapping scheme, by mapping to The bits of different reliability on the constellation points in the constellation diagram are reordered, which can even out the spectrum energy of each bit, maximize the reliability of the codeword bits, and enhance the performance of the link.

[0076] In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0077] method embodiment

[0078] According to one aspect of the present invention, a constellation map mapping method is provided.

[0079] Figure 5 is a flowchart of a constellation map mapping method according to an embodiment of the present invention, which is...

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Abstract

A method and an apparatus for mapping the constellation are provided. The method includes that: a part of bits of a bit sequence which is waited for mapping are used as the first bit sequence, and every m bits of the first bit sequence is mapped to a constellation point of the constellation according to the order from front to back, and the bit located in the first preset position of every m bits is mapped to the first preset bit of the corresponding constellation point, the bit located in the second preset position of every m bits is mapped to the second preset bit of the corresponding constellation point, the reliability of the first preset bit is higher than that of the second preset bit; the other part of bits of the bit sequence which is waited for mapping are used as the second bit sequence, and every m bits of the second bit sequence is mapped to a constellation point of the constellation according to the order from front to back, and the bit located in the first preset position of every m bits is mapped to the second preset bit of the corresponding constellation point, the bit located in the second preset position of every m bits is mapped to the first preset bit of the corresponding constellation point. The reliability of codeword bits can be maximally 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L12/70
CPCH04L27/36
Inventor 许进徐俊徐前子袁志锋胡留军
Owner ZTE CORP
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