Adaptive equalization method and apparatus of receiver
An adaptive equalization and receiver technology, applied in the field of signal transmission, can solve problems such as poor signal quality at the receiving end and complex channel loss changes, and achieve the effects of solving poor signal quality, improving signal-to-noise ratio, and improving signal quality
Active Publication Date: 2017-02-15
ANALOGIX CHINA SEMICON +1
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[0007] Embodiments of the present invention provide an adaptive equalization method and device for a receiver, to at least solve the technical problem of poor signal quality at the receiving end caused by complex channel loss changes
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[0037] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0038] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...
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The invention discloses an adaptive equalization method and apparatus of a receiver. The method comprises the following steps: acquiring first code pattern data, second code pattern data and third code pattern data output from a clock data recovery circuit, wherein the first code pattern data and the second code pattern data are respectively extracted from a first path of data and a second path of data, the third code pattern data is extracted from the first path of data or the second path of data, the first path of data and the second path of data are acquired from to-be-received data by means of the sequential compensation of a linear equalizer and a decision feedback equalizer of the receiver, and the bandwidth of the linear equalizer is 1 / 4 of the rate of the to-be-received data; determining first compensation information according to the first code pattern data and the second code pattern data, and determining second compensation information according to the third code pattern data; and adjusting a decision feedback equalization coefficient of the decision feedback equalizer according to the first compensation information, and adjusting a high frequency compensation gain of the linear equalizer according to the second compensation information. By adoption of the adaptive equalization method and apparatus disclosed by the invention, the technical problem of poor signal quality of a receiving end caused by relatively complicated loss changes of a channel is solved.
Description
technical field [0001] The present invention relates to the field of signal transmission, in particular to an adaptive equalization method and device for a receiver. Background technique [0002] In the application of high-speed serial interface, the quality of the signal at the receiving end is seriously affected due to the medium loss and skin effect of the channel. In the prior art, the low-frequency and high-frequency attenuation of the signal by the channel is compensated by pre-emphasis at the transmitting end and equalization at the receiving end. Among them, the pre-emphasis at the sending end is an a priori method, which compensates the subsequent channel attenuation through pre-distortion; and the equalization at the receiving end is an a posteriori method, which performs corresponding compensation through known signal attenuation. [0003] figure 1 is a block diagram of a high-speed serial interface receiver circuit according to the related art, such as figure ...
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IPC IPC(8): H04L25/03
CPCH04L25/03038H04L25/03057
Inventor 巨浩李奇
Owner ANALOGIX CHINA SEMICON