Single carrier equalizer and receiver system comprising same

Abstract

The invention relates to the technical field of an equalizer, and particularly relates to a single carrier equalizer and a receiver system comprising the same. Performance of a frequency domain equalizer is gradually promoted in an iteration manner, i.e. after primary iteration is carried out by an iterative updater on the basis of a frequency domain value of an input signal and a frequency domain value of a channel of the input signal, the iterated input signal can be sent to an inverse fast Fourier transformer, a value output by the inverse fast Fourier transformer is decided by utilizing a signal decision device, an output signal of the decision device is respectively transmitted to a fast Fourier transformer and the iterative updater, i.e. the signal output after calculation of the fast Fourier transformer also enters the iterative updater, the iterative updater starts a next iterative equalization operation at the moment, reciprocation is carried out hereby until iteration is stopped and conditions are reached, and in the equalizing process, by utilizing an iterative calculator, performance of the single carrier equalizer under the narrowband interference is improved and influence of the narrowband interference is reduced.

Description

technical field [0001] The invention relates to the technical field of equalizers, in particular to a single-carrier equalizer and a receiver system including the single-carrier equalizer. Background technique [0002] At present, with the progress of society and the development of science and technology, people have higher and higher requirements for the speed and accuracy of data transmission, especially in the field of data transmission / reception using wireless signals, because of its better portability, people expectations are often higher. However, in the current wireless data receiving / sending system, due to more external interference in the data transmission process, the transmission signal is still often distorted, especially in the process of channel transmission with limited bandwidth and multi-path. particularly prominent. [0003] In order to restore the distorted signal effectively, the industry usually sets a time-domain equalizer or a frequency-domain equali...

AI Technical Summary

Problems solved by technology

However, in the current wireless data receiving / sending system, due to more external interference in the data transmission process, the transmission signal is still often distorted, especially in the process of channel transmission with limited bandwidth and multi-path. particularly prominent

[0003] In order to restore the distorted signal effectively, the industry usually sets a time-domain equalizer or a frequency-domain equalizer at the receiver. However, due to the limitations of various technologies, the current equalizers cannot meet the requirements, especially in complex In multipath data transmission, the performance of the equalizer is even more worrying, which leads to a significant decrease in the performance of the entire receiver system

In the presence of frequency-domain narrowband interference, the performance of existing equalizers degrades significantly

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