Method for eliminating phase noise using continuous transmission parameter signalling

A technology for transmitting parameter signaling and phase noise, which is applied in the field of phase noise elimination and phase noise elimination. It can solve the problems of symbol error rate loss, spurious receiving constellation points, and low operability, so as to save bandwidth and reduce costs. Effect
CN101136731AInactive Publication Date: 2008-03-05FUDAN UNIV +1
0 Cites 20 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FUDAN UNIV
Publication Date
2008-03-05
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Using a set of consecutive transmission parameter signaling (TPS), the method eliminates phase noise in national standard system about digital TV ground transmission. The method includes steps: estimating phase noise for received TPS sub carrier; solving a set of equation and inverse discrete Fourier transform (IDFT) to obtain estimation of phase noise in time domain; using the estimation of phase noise in time domain to carry out phase compensation for corresponding data not done discrete Fourier transform (DFT); through DFT, the compensated signals are converted to frequency domain, and using equilibrium process to obtain needed result. Theoretical analysis and simulation result shows that the method based on TPS to estimate phase noise can raise performance of symbol error rate (SER) markedly under additivity white Gaussian noise (AWGN) and under multipath channels.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of digital television terrestrial transmission, and in particular relates to a method for eliminating phase noise, which can be directly applied to the phase noise elimination of the national digital television terrestrial transmission (DTMB) system. Background technique

[0002] Orthogonal Frequency Division Multiplexing (OFDM) is a high-speed transmission technology in a wireless environment. It is widely used in high-definition digital TV broadcasting, wireless local area network and other fields. OFDM can effectively suppress intersymbol interference (ISI), but it is sensitive to phase noise. China's national digital TV standard uses the solution of multi-carrier and single-carrier fusion, and there is also the problem that multi-carrier transmission is easily interfered by phase noise.

[0003] The radio frequency signal received by the OFDM system is first down-converted to an intermediate frequency ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More