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Method and device for determining a dominant disturbance type

A technology of interference type and judging device, applied in shaping network in transmitter/receiver, using signal quality detector for error detection/prevention, baseband system, etc., can solve the problem of unreliable detection of co-channel interference source and received signal There are not enough distinguishing standards in the spectrum to achieve the effect of improving capabilities

Inactive Publication Date: 2006-08-30
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Description
  • Claims
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Problems solved by technology

This method is very suitable for identifying adjacent channel interferers, but co-channel interferers cannot be reliably detected with this method, because the desired signal and the co-channel interferer usually have the same or very similar continuation spectrum and thus the spectrum of the received signal not enough distinguishing criteria
Therefore in all the mentioned methods it is very possible to mistakenly present co-channel interferers that are not identified or falsely present white noise as co-channel interferers

Method used

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  • Method and device for determining a dominant disturbance type
  • Method and device for determining a dominant disturbance type
  • Method and device for determining a dominant disturbance type

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Embodiment Construction

[0045] In the following, the same reference numerals are used uniformly for identical and identical elements in different embodiments. figure 1 The basic principle of the method according to the invention in the first simple embodiment shown consists in determining in block 10 an estimate of the magnitude of the "signal-to-interference-plus-noise ratio (SINR)" and in block 12 the received signal power P RX The estimated value of , and sent to the decision unit 14, which makes a decision about the existence of co-channel and / or adjacent channel interference from these two characteristics.

[0046] exist figure 2 In another embodiment generally shown, an estimate of the "signal-to-residual-interference-plus-noise" (SRINR) magnitude is used in block 16 as a third magnitude At the same time join the judgment search (see figure 2 ), wherein interference suppression is selected in block 18 prior to the estimation.

[0047] First, the meaning of the so-called estimated value in ...

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Abstract

The invention relates to a method for the digital transmission of data. Transmission occurs by modulating a carrier frequency and is disturbed by at least two different types of interferences. Said method comprises, on the receiver side, the following steps: a1) An estimation value for the power of the received signal is determined; a2) an estimation value for the signal-to-noise and interference ratio of the received signal is determined; b) at least the estimation values determined in steps a1) and a2) are transmitted to a decision device which determines at least one dominant disturbance type by means of at least one predetermined decision criterion. The invention also relates to a device for receiving digital data transmitted by modulating a carrier frequency. Said device comprises a device (12) for determining an estimation value for the power of the received signal, a device (10) for determining an estimation value for the signal-to-noise and interference ratio of the received signal and a decision device (14) which is coupled to the device (12) for determining an estimation value for the power,, to a device (10) for determining an estimation value for the signal-to-noise and interference ratio and which is configured such that at least one dominant disturbance type based on the determined estimation value can be determined by using at least one predetermined decision criterion. Finally, the invention relates to a semi-conductive component wherein the inventive method is stored.

Description

technical field [0001] The invention relates to a method and a device for digital transmission of data, wherein the transmission is carried out by modulating a carrier frequency, such as in the mobile communication system GSM (Global System for Mobile Communication), and is disturbed by at least two different types of interference. In particular, the present invention relates to a method and a system for identifying interfering signals for TDMA-(Time-Division Multiple Access) and / or FDMA-(Frequency-Division Multiple Access) transmissions which are at least and approximately explained by pulse amplitude modulation. The intelligibility of the approximation by the pulse amplitude modulation exists when the modulation error produced here is less than 10%. The invention also relates to a semiconductor device in which the method according to the invention is stored. Background technique [0002] In the case of carrier frequency-based digital transmission, eg via a decentralized c...

Claims

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Application Information

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IPC IPC(8): H04L1/20H04L25/03
CPCH04L25/03006H04L1/20H04L25/03
Inventor R·迈耶
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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