Phase noise compensation method and system for wireless communication system based on clustering algorithm
A phase noise compensation and wireless communication system technology, applied in the field of phase noise compensation, can solve problems such as low accuracy of phase reference estimation, imperfect phase-locked loop circuit, and reduced system demodulation performance
Active Publication Date: 2020-05-12
SHENZHEN UNIV
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[0002]In modern wireless communication, the theoretical analysis of wireless communication systems assumes perfect phase reference estimation, but in actual wireless communication, due to imperfect phase-locking loop circuit or imperfect channel estimation, the phase reference estimation is often noisy (that is, phase noise), and the phase noise will greatly reduce the demodulation performance of the system
[0003]Existing methods for suppressing phase noise focus on improving the accuracy of phase reference estimation, however, the accuracy of phase reference estimation is often not high
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[0032]Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the drawings. In the following description, the same reference numerals are given to the same components, and repeated descriptions are omitted. In addition, the drawings are only schematic diagrams, and the ratio of dimensions between components, the shape of components, and the like may be different from the actual ones.
[0033] The present disclosure provides a phase noise compensation method and system of a wireless communication system based on a clustering algorithm (also referred to as "phase noise compensation method and phase noise compensation system"). In the present disclosure, the phase noise compensation method and system of the wireless communication system based on the clustering algorithm can be widely applied in the existing wireless communication system, can be more easily integrated with the existing wireless communication system, and can be rel...
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The invention relates to a phase noise compensation method of a wireless communication system based on a clustering algorithm. The method comprises the following steps that: a transmitting end transmits a carrier signal to a wireless channel based on channel coding, baseband modulation and radio frequency modulation, and generates a receiving signal which is received by a receiving end; the receiving end obtains a baseband signal based on radio frequency demodulation and a phase-locked loop circuit, and obtains a gain baseband signal based on automatic gain control; a plurality of clusters corresponding to standard constellation points and sample points of the gain baseband signal as well as a plurality of corresponding clustering center points are obtained on the basis of a clustering model; a target constellation point corresponding to each cluster is determined on the basis of a distance calculation model, and the coordinates of the sample points corresponding to each cluster are replaced with the coordinates of the target constellation points corresponding to the cluster based on a cluster mapping model to realize phase noise compensation, and further to obtain a target receiving signal, and the target signal by the receiving end based on baseband demodulation, channel decoding and the target receiving signal is obtained.
Description
technical field [0001] The present disclosure relates to the technical field of wireless communication, in particular to a phase noise compensation method and system of a wireless communication system based on a clustering algorithm. Background technique [0002] In modern wireless communication, the theoretical analysis of wireless communication systems assumes perfect phase reference estimation, but in actual wireless communication, due to imperfect phase-locked loop circuit or imperfect channel estimation, phase reference estimation often has Noise (that is, phase noise), phase noise will greatly reduce the demodulation performance of the system. [0003] Existing methods for suppressing phase noise all focus on improving the accuracy of phase reference estimation, however, the accuracy of phase reference estimation is often not high. Contents of the invention [0004] The present disclosure is proposed in view of the above situation, and its purpose is to provide a ph...
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IPC IPC(8): H04L27/26G06K9/62
CPCH04L27/2691G06F18/2321G06F18/23213
Inventor 谢宁胡天星
Owner SHENZHEN UNIV