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Apparatus and method for filtering a receive signal

A device, filter technology, applied in the field of receiving stations, which can solve problems such as compromising the operation of equalizers

Inactive Publication Date: 2008-08-13
RES IN MOTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a narrowband receiver filter will reject a greater amount of adjacent channel interference, the narrowing of this filter impairs equalizer operation at the receiving station to compensate for inter-channel interference

Method used

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  • Apparatus and method for filtering a receive signal
  • Apparatus and method for filtering a receive signal
  • Apparatus and method for filtering a receive signal

Examples

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Embodiment Construction

[0024] Thus, referring initially to FIG. 1 , a radio communication system, shown generally at 10 , provides communications with mobile stations, such as mobile station 12 . In the present exemplary embodiment, the communication system forms a cellular communication system (ie a multiple access mobile radio communication system) having a network infrastructure comprising a plurality of spatially separated space stations. Here, the network infrastructure is indicated at 14 and a single base transceiver station (BTS) 16 is indicated as part of the network infrastructure. More specifically, communication system 10 represents any of a variety of communication systems formed by a group of communication stations (here stations 12 and 16) in which transmitted signals are prone to introducing distortion. Additionally, the following description of exemplary operation will be described with reference to downlink communications (ie, data communications from the base transceiver station to...

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Abstract

Apparatus, and an associated method, for the receive part of a receiving station, such as a mobile station or other transceiver of a cellular communication system. Selection is made of filter characteristics to be exhibited by an adaptive, input noise whitening filter. A noise estimator estimates a noise component of a noise sequence. An autocorrelation estimator estimates the noise-component autocorrelation. A determination is made as to whether the autocorrelation exceeds a threshold. If so, filter characteristics are selected to cause the input noise whitening filter to operate to inject whitening noise into the received sequence.

Description

technical field [0001] The present invention generally relates to a method for a receiving station, such as the receiving part of a cellular system receiver, for suppressing interference comprised in a received signal. More particularly, the present invention relates to an apparatus and associated method for operating an adaptive input noise whitening filter of a receiving station. The filter is activated or operated for interference whitening when the received signal contains a significant interference component, otherwise no whitening is introduced. [0002] Use Threshold to choose whether to operate the input noise whitening filter. By properly setting the threshold, the filter is operable when whitening is beneficial to the information recovery of the received data, and is operable when the introduction of whitening is not required or the introduction of whitening is not conducive to information recovery Used to not introduce whitening. Background technique [0003] D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/36H04B7/26
CPCH04L25/03299H04B1/10
Inventor 吴欢西恩·塞门斯
Owner RES IN MOTION LTD
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