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Radio communication terminal with interference cancellation

A terminal, interference signal technology, applied in electrical components, diversity/multi-antenna systems, space transmit diversity and other directions, can solve problems such as impossibility, eliminate radiation noise, etc.

Inactive Publication Date: 2004-08-25
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Also on the contrary, for interference caused by radiated noise, there is still no available technique to generate pseudo radiated noise corresponding to pseudo echo, therefore, it is impossible to eliminate radiated noise by using echo canceller technique

Method used

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  • Radio communication terminal with interference cancellation
  • Radio communication terminal with interference cancellation
  • Radio communication terminal with interference cancellation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] figure 1 An embodiment of the radio communication terminal according to the present invention is illustrated in the form of a block diagram. The radio communication terminal 200 is composed of the following parts: a receiver 210 for converting a received signal into an intermediate frequency signal or a baseband signal and demodulating it; an interference canceller 220 for canceling radiation noise from electronic equipment; and an information processing part 230 . Interference canceller 220 includes an adder 22A and a radiated noise predictor 22B. The information processing section 230 performs main data processing of the radio communication terminal, for example, when the radio communication terminal 200 is a portable telephone, not only voice signal processing and origination and termination processing but also various additional functions for executing the portable telephone digital processing.

[0028] The received signal received by the antenna AN and output f...

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PUM

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Abstract

A radio communication terminal disposed in close proximity to or built in electronic equipment is provided with a receiver connected to a receiving antenna and an interference canceller for removing from a received signal a radiated noise component from the electronic equipment received by the receiving antenna. The interference canceller includes a radiated noise predictor which predicts the radiated noise component in the received signal based on the radiated noise from the electronic equipment and generates a pseudo interference signal accordingly, and an adder which cancels the radiated noise component in the received signal by the pseudo interference signal.

Description

technical field [0001] The present invention relates to a radio communication terminal that eliminates radiation noise to improve transmission performance of a radio communication system. Background technique [0002] As the clock frequency of a personal computer increases, there arises a problem that, when used in combination therewith, the clock signal of the personal computer affects its adjacent radio communication terminal. this point in Figure 12 shown in . exist Figure 12 In this case, a base station 10 and a radio communication terminal 20 exchange information via a radio channel 13 . In this case, the radio communication terminal 20 also receives radiation noise N from a personal computer or similar electronic device 30 placed in its vicinity. R . The radio communication terminal 20 is not only a portable terminal, but also a terminal built in electronic equipment (personal computer), such as a PC card type radio communication terminal incorporated in a persona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/10H04B1/12H04B7/08
CPCH04B1/123H04B1/126
Inventor 福田敦史垂泽芳明寺田矩芳
Owner NTT DOCOMO INC