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Data auxiliary carrier wave synchronization and phase noise compensation method

A phase noise compensation, auxiliary carrier technology, applied in carrier adjustment, modulation carrier system, digital transmission system, etc., can solve the problems of high complexity of carrier synchronization operation and difficult implementation, and achieve carrier synchronization, good mutuality, The effect of high estimation accuracy

Active Publication Date: 2017-01-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0009] In order to overcome the high complexity of carrier synchronization operation and the difficulty in realizing it, the present invention proposes a data-assisted carrier synchronization and phase noise compensation method

Method used

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  • Data auxiliary carrier wave synchronization and phase noise compensation method
  • Data auxiliary carrier wave synchronization and phase noise compensation method

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Embodiment

[0045] A method for data-assisted carrier synchronization and phase noise compensation, characterized in that it comprises the steps of:

[0046] S1. Construct the data block of the frame according to the standard, and define the data block symbol sequence as x i =[u(0),u(1),u(2),...,u(N cp -1), s i (0),s i (1),....,s i (N s -1)] T =[x i (0),x i (1),...,x i (N b -1)] T , defining the N×N channel matrix where h=[h(0),h(1),...,h(L-1)] T For the channel impulse response of the millimeter wave wireless communication system, define H 0 and H 1 The merge matrix of Define the time-domain phase noise matrix Define the balance matrix

[0047] S2. Initialization processing, specifically as follows:

[0048] S21. The modulation at the sending end includes x described in S1 i the frame of the data block;

[0049] S22. Define H described in S1 0 , H 1 , A i and C i ;

[0050] S23. Define a local pseudo-random sequence;

[0051] S3. Receive the data frame, spec...

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Abstract

The invention belongs to the technical field of wireless communication, especially relates to a method for performing carrier wave synchronization and simultaneously compensating and inhibiting phase noise by use of cross correlation of a Golay sequence in a millimeter wave wireless communication system, and brings forward a data auxiliary carrier wave synchronization and phase noise compensation method. According to the invention, by use of good correlation and matching gain of a pseudo sequence, the problem of influences exerted by carrier wave frequency deviations and phase noise on a signal error rate is converted into a problem of correcting data phase deviations, such that by use of a correlation theory based on data auxiliary carrier wave synchronization and phase noise compensation inhibition, through correcting the carrier wave deviations and the phase deviations caused by the phase noise, the error rate of data is reduced to the order of magnitude of 10 <-6> to 10<-7>.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a method for performing carrier synchronization and compensating and suppressing phase noise at the same time by utilizing the mutual correlation of Gray sequences in a millimeter wave wireless communication system. Background technique [0002] Such as figure 1 As shown, in a wireless communication system, a typical data frame structure includes pilot sequences and data blocks. Among them, the pilot sequence is used for synchronization (carrier, timing and frame synchronization). [0003] The specific principles are as follows: [0004] Suppose the pilot sequence r[n]=s[n]·e received by the receiving end j(2πnΔf+θ) +w[n], where s[n] is the known training sequence of length K sent by the sender, Δf is the carrier frequency offset, θ is the initial phase offset of the training sequence caused by the carrier frequency offset, w[n ] is additive white G...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/00H04L25/03
CPCH04L25/03159H04L27/0014H04L2027/0026
Inventor 徐小珂岳光荣
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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