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Decoupled single-antenna interference suppression system and method based on fractionally-spaced equalization

A fractional interval, interference suppression technology, applied in baseband system components, line fault/interference reduction, transmission systems, etc., can solve problems such as timing deviation being particularly sensitive

Active Publication Date: 2017-03-08
LEADCORE TECH +2
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Problems solved by technology

However, both algorithms are particularly sensitive to timing deviations that occur in the system

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  • Decoupled single-antenna interference suppression system and method based on fractionally-spaced equalization
  • Decoupled single-antenna interference suppression system and method based on fractionally-spaced equalization
  • Decoupled single-antenna interference suppression system and method based on fractionally-spaced equalization

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[0050] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that the drawings are all in a very simplified form and use imprecise ratios, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0051] The fractionally spaced equalization-based decoupling single-antenna interference suppression system provided by the present invention is mainly used in receivers in wireless communications, specifically, receivers for EDGE signals. Such as figure 1 As shown, the decoupling single-antenna interference suppression system based on fractional interval equalization includes:

[0052] Two same-frequency filters 10 are used to process single-time sampling data and perform double-time filtering; and

[0053] ...

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Abstract

The invention provides a decoupled single-antenna interference suppression system based on fractionally-spaced equalization. The decoupled single-antenna interference suppression system comprises a same-frequency filter and a fractionally-spaced DFSE equalizer; the same-frequency filter is used for processing single-fold sampling data and performing double filtering; and the fractionally-spaced DFSE equalizer is used for receiving double-filtered data, performing equalization processing of a passing signal by using a DFSE equalization algorithm based on fractional spacing, and outputting an estimation value of the signal. The invention further provides a decoupled single-antenna interference suppression method based on fractionally-spaced equalization. On the basis of the decoupled single-antenna interference suppression technology based on fractionally-spaced equalization, same-frequency interference and inter-symbol interference in a dynamic channel can be well suppressed.

Description

technical field [0001] The present invention relates to a receiver structure in a wireless communication system, and more specifically to a decoupling single-antenna interference suppression system and method based on fractional interval equalization. Background technique [0002] In the GSM communication system, the wireless signal transmitted from the base station to the mobile terminal is susceptible to interference from many aspects, and the main interference comes from thermal noise, multipath propagation and co-channel interference. In particular, co-channel interference and intersymbol interference are becoming more and more important factors that limit system capacity, so it is becoming more and more important to introduce interference cancellation technology in the receiver. [0003] Co-channel interference belongs to colored noise. Traditional GSM receivers use the MLSE algorithm to achieve the purpose of eliminating equalization and suppressing white noise. Howeve...

Claims

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Application Information

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IPC IPC(8): H04B1/12H04L25/03H04L25/08
Inventor 祁卿峰周小林毕伟祥王紫鹏
Owner LEADCORE TECH
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