Method for carrying out equalization on 100M magnitude broadband reception signal

A technology of broadband reception and equalization method, which is applied to the shaping network, advanced technology, baseband system components and other directions in the transmitter/receiver. effect, the effect of improving the equalization convergence speed and equalization performance, and the effect of shortening the convergence speed

Inactive Publication Date: 2012-07-18
10TH RES INST OF CETC
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  • Method for carrying out equalization on 100M magnitude broadband reception signal
  • Method for carrying out equalization on 100M magnitude broadband reception signal
  • Method for carrying out equalization on 100M magnitude broadband reception signal

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Embodiment Construction

[0031] refer to figure 1. The fractional interval adaptive blind equalization digital logic circuit with decision feedback is used to receive the oversampled baseband signal to be equalized in parallel, and the equalization coefficient lag update structure and the equalization structure combining fractional interval and decision feedback are used to perform digital sampling on the baseband signal. To process and time-domain equalize the broadband signal, the entire circuit includes a forward equalization unit, a reverse equalization unit, a decision unit, an adaptive algorithm unit, a data assignment unit, a summation unit and an error extraction unit.

[0032] The equalization method consists of a serial processing flow and two loop feedback processing flow implementations:

[0033] The serial processing flow consists of a data assignment unit, a forward equalization unit, and a summation unit connected in series.

[0034] The main function of the data assignment unit is t...

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Abstract

The invention provides a method for carrying out equalization on a 100M magnitude broadband reception signal, and is aimed at providing a method for using a simple time domain parallel structure to carry out time domain equalization on the broadband signal with small resource consumption, a fast operation speed, and no need of changing a transmission system. The method is realized through the following technical scheme: (1) employing a fraction interval adaptive blind equalization digital logic circuit with decision feedback, and receiving over-sampling baseband signal to be equalized in parallel; (2) carrying out addition of output of all transverse filtering structures as equalization output, and sending the baseband signal to be equalized into the transverse filtering structures in a forward direction equalization unit according to a corresponding phase relationship; (3) judging an equalization output result with a decision unit, and solving an error signal e(n) of the output result and a decision result; after e(n) is adjusted through an error convergence factor, carrying out gradient estimation and equalization coefficient updating, and sending an updated equalization coefficient to each transverse filtering structure to carry out an equalization operation. According to the method, contradiction between generating the equalization results and carrying out the equalization coefficient updating simultaneously in a code element is solved.

Description

technical field [0001] The invention relates to providing a high-speed, high-efficiency and feasible 100-megabit high-speed data transmission receiver equalization method for a high-speed wireless data transmission system in the field of wireless broadband communication. The method is applied to a high-speed digital transmission receiver, is a baseband equalization method based on digital signal processing, and is also a high-speed parallel adaptive blind equalization method. technical background [0002] Wireless broadband and high-speed data transmission technology is one of the core technologies of high-speed wireless data transmission system. High-speed digital transmission receiver is widely used in broadband satellite communication and wireless communication, and equalization method is an indispensable part of it. [0003] So far, internationally, the United States NASA has included 6 satellites in orbit and the Baisha comprehensive station composed of the first-genera...

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Application Information

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IPC IPC(8): H04B1/06H04L25/03
CPCY02B60/31Y02D30/50
Inventor 刘景元杜瑜王宇舟
Owner 10TH RES INST OF CETC
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