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Simulation and Implementation of blind equalization in high-speed digital transmission technology

Author: TangSaiFen
Tutor: WanQun
School: University of Electronic Science and Technology
Course: Access to information and detection technology
Keywords: Data transmission speed ISI FSE blind equalization filter
CLC: TN911.5
Type: Master's thesis
Year: 2011
Downloads: 74
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Abstract

Modern high speed, remote sensing satellite communications and remote investigate the drone of data transfer rates to Mbps even Gbps, yards, jamming, or group delay cannot be ignored. Against the satellite high-speed digital application, the paper presented to the realization of Laguerre algorithm, and the interference between groups in the yard and give me a mark in the interval between the structure and work out an efficient blind equalization filter. Laguerre algorithm based on a limited number of rank, we can achieve the effect of the filtering IIR burst; Score interval equalization filter (FSE) are able to reduce the sample can be effective and sensitive phase to improve the synchronous aspect of error of the performance,FSE designed based on a fairly good performance and to the implementation of projects FPGA.First, this article by simulation and a balanced, enhancement by different channels of the equilibrium of the performance of the theory of curves, Laguerre filter use laguerre sequence of FIR on the head of a delay, in simulation process will reduce the need to filter whose order, for the hardware to save resources and for the high-speed digital equalization filter design provides useful reference.Secondly, analyzes the different structures of a filter on a balanced laguerre the performance impact. Laguerre with a score at a balanced approach, based on the combination we can effectively reduce the received signal loss caused by the channel and error, filtering and gain more than a gain of the filtering about 1-2dB or so.Finally, the text of blind equalization based on the structure of the hardware design and implementation, in theory the hardware to achieve results. the design of the claim. By establishing different models and simulations channel in a different miss rate for a balanced and based on performance analysis and verification. Simulation analysis indicates that the SNR is 10db, no all-round filter data error code to 10-3, and a balanced ratio of the code can be reduced to 10-5, the correct balance between the yard with a big raise. Because of hardware design has fixed points, not the accuracy of the theory of emulation.The working paper to summarize for the next step research direction to the planning and outlook. at present our high-speed digital research or has entered into with foreign normal but there are still greater level of high-speed digital gap, strengthen study of the field of space exploration is an important task, for our space technology development is very important role.

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