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An n-dimensional amplitude-phase joint modulation method and modulator

A technology of joint modulation and phase modulation, applied in the field of channel coding and modulation, can solve the problems of low data transmission reliability and small minimum Euclidean distance, achieve good bit error rate performance, strong resistance to Rayleigh fading, reliability high effect

Active Publication Date: 2021-10-08
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides an n-dimensional amplitude-phase joint modulation method and modulator to solve the problem of low reliability of data transmission in the prior art due to the small minimum Euclidean distance of the constellation diagram. low technical issues

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  • An n-dimensional amplitude-phase joint modulation method and modulator
  • An n-dimensional amplitude-phase joint modulation method and modulator
  • An n-dimensional amplitude-phase joint modulation method and modulator

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Embodiment 1

[0067] An n-dimensional amplitude-phase joint modulation method, such as figure 1 shown, including the following steps:

[0068] S1, from (n, n(n-1), n-1) permutation code set P of group codes n choose 2 k permutation codewords constitute n-dimensional phase modulation vector set Γ n ; Among them, Γ n still have P n The coset structure characteristics of n is a positive integer greater than 1;

[0069] Specifically, in this embodiment, for P n ={(t l1 ) n-1 L n}={(t rn ) n-1 L n} in the circular shift operator t l1 and t rn The composite function of the n-1 power of is lowered by one power, and the n-dimensional phase modulation vector set Γ is obtained n ={(t l1 ) n-2 L n}={(t rn ) n-2 L n}. Further, in order to make Γ n still have P n The coset structural features of , the structural parameters k and n need to have a good match, specifically, Γ n is divided into cosets, each coset contains permutation codewords, where k=k 1 +k 2 , then 2 k ...

Embodiment 2

[0081] An n-dimensional amplitude-phase joint modulator, such as figure 2 As shown, it includes: an information sequence separation module, a first mapping module, a second mapping module, a first shift register, a second shift register and an amplitude-phase joint modulation module;

[0082] Wherein, the output end of the information sequence separation module is connected with the input end of the first mapping module and the second mapping module respectively, the output end of the first mapping module is connected with the input end of the first shift register, and the output end of the second mapping module Connected to the input end of the second shift register, the output ends of the first shift register and the second shift register are connected to the input end of the amplitude-phase joint modulation module;

[0083] The information sequence separation module is used to divide the m-bit binary information sequence to be sent into two binary sequences, which are resp...

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Abstract

The invention discloses an n-dimensional amplitude-phase joint modulation method and a modulator. The invention respectively replaces the code set P of the group code from (n, n(n-1), n-1) n choose 2 k and two permutation codewords to form an n-dimensional phase modulation vector set Γ n and n-dimensional amplitude modulation vector set Λ n , based on the binary information sequence to be sent, respectively from Γ n and Λ n Take out the replacement codewords u and v, use the replacement codeword u to control the phase of the carrier signal, and use the replacement codeword v to control the amplitude of the carrier signal, thereby generating an amplitude-phase joint modulation signal on the n-dimensional real Euclidean space; the generated amplitude The constellation diagram Ω corresponding to the phase joint modulation signal n , has a good Euclidean distance characteristic, and in the case of low complexity, it still has a strong ability to resist Rayleigh fading and has high reliability.

Description

technical field [0001] The invention belongs to the field of channel coding and modulation in communication transmission systems, and more specifically relates to an n-dimensional amplitude-phase joint modulation method and modulator based on (n, n(n-1), n-1) permutation group codes . Background technique [0002] Ultra High Reliable Low Delay Communication (URLLC) in the 5G standard puts forward stricter requirements on the reliability of the communication system. However, current channel coding and modulation techniques are difficult to meet this requirement. (n, n(n-1), n-1) permutation group codes are a kind of permutation codes with strong error correction ability, which have good Euclidean distance parameters and low-complexity code set algebraic generation methods. Among them, the construction method of the coset division (n, n(n-1), n-1) permutation group code and its code set generator have applied for an invention patent to the State Intellectual Property Office ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/2634
Inventor 陈思嘉彭立戴彬张林秦臻梁琨周波
Owner HUAZHONG UNIV OF SCI & TECH
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