Portable interference-generating device for use in CDMA mobile testing
First Claim
1. A portable device for inducing a desired frame error characteristic at a mobile unit, wherein the mobile unit is receiving a carrier signal having at least one data channel having a plurality of data frames, the portable device comprising:
- a noise source for providing a noise signal;
a pulse generator for providing a gating signal, wherein the gating signal is used for gating the noise signal according to the desired frame error characteristic;
an output port electrically coupled to the noise source for receiving the gated noise signal; and
a coupling element for connecting to the output port, wherein the coupling element is operable to provide the gated noise signal to the mobile unit such that the gated noise signal is added to the carrier signal being received at the mobile unit to induce the desired frame error characteristic.
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Accused Products
Abstract
A portable interference-generating device for inducing desired frame error characteristics, such as desired frame error patterns and rates, at a mobile unit receiving a carrier signal having at least one data channel having a plurality of data frames. The induced frame errors may be used to test a digital radio receiver'"'"'s behavior in the presence of frame errors that may occur as a result of various impairments in a CDMA wireless communication channel. The portable interference-generating device includes a noise source that provides a noise signal and a pulse generator that is used to gate the noise signal according to a desired frame error characteristic at the mobile unit. The gated noise signal is provided to the mobile unit via a coupling element, which preferably couples the gated noise signal directly to an antenna radiation element on the mobile unit.
27 Citations
20 Claims
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1. A portable device for inducing a desired frame error characteristic at a mobile unit, wherein the mobile unit is receiving a carrier signal having at least one data channel having a plurality of data frames, the portable device comprising:
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a noise source for providing a noise signal; a pulse generator for providing a gating signal, wherein the gating signal is used for gating the noise signal according to the desired frame error characteristic; an output port electrically coupled to the noise source for receiving the gated noise signal; and a coupling element for connecting to the output port, wherein the coupling element is operable to provide the gated noise signal to the mobile unit such that the gated noise signal is added to the carrier signal being received at the mobile unit to induce the desired frame error characteristic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A portable device for inducing a desired frame error characteristic at a mobile unit, wherein the mobile unit is receiving a carrier signal having at least one data channel having a plurality of data frames, the portable device comprising:
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a noise source for providing a noise signal; a programmable pulse generator for providing a gating signal having a duration characteristic and an interval characteristic, wherein the gating signal is used for gating the noise signal to produce a noise burst signal; an output port electrically coupled to the noise source for receiving the noise burst signal; and a coupling element for connecting to the output port, wherein the coupling element couples the noise burst signal directly to an antenna radiation element of the mobile unit such that the noise burst signal is added to the carrier signal being received at the mobile unit to induce the desired frame error characteristic. - View Dependent Claims (14)
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15. A digitally-controlled portable device for inducing a desired frame error characteristic at a mobile unit, wherein the mobile unit is receiving a carrier signal having at least one data channel having a plurality of data frames, the digitally-controlled portable device comprising:
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a digital controller; a front-end module serially coupled to the digital controller for providing the digital controller with information regarding signal characteristics of the carrier signal; a noise source for producing a noise signal, wherein the noise signal is gated according to the desired frame error characteristic using a gating signal provided by the digital controller; an output port electrically coupled to the noise source for receiving the gated noise signal; and a coupling element for connecting to the output port, wherein the coupling element is operable to provide the gated noise signal to the mobile unit such that the gated noise signal is added to the carrier signal being received at the mobile unit to induce the desired frame error characteristic. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification