US 2014/0233623 A1 · SIGNAL GENERATION DEVICE, MOBILE COMMUNICATION TERMINAL TEST DEVICE INCLUDING THE SAME, SIGNAL GENERATION METHOD, AND MOBILE COMMUNICATION TERMINAL TEST METHOD

Abstract

To provide a mobile communication terminal test device that can generate a signal with amplitude-frequency characteristics or phase-frequency characteristics which are changed over time. A mobile communication terminal test device 10 includes a data generation unit 12 that generates a bit stream, a sub-carrier generation unit 31 that receives bit stream data and performs, for example, predetermined encoding, symbol mapping, or sub-carrier mapping to convert the received data into a plurality of sub-carriers based on an OFDM modulation system, a frequency characteristic storage unit 13 that stores table data for predetermined amplitude-frequency characteristics and phase-frequency characteristics, and a frequency characteristic calculation unit 32 that sets the amplitude and phase of each sub-carrier input from the sub-carrier generation unit 31 on the basis of the table data.

Claims14

Dependent claims

A signal generation device that generates a signal in which a plurality of sub-carriers are arranged in a frequency domain, comprising:

sub-carrier generation means for generating the plurality of sub-carriers based on a predetermined modulation system from input data;
time domain conversion means for receiving the generated plurality of sub-carriers and converting the plurality of sub-carriers into a signal in a time domain;
frequency characteristic storage means for storing data of frequency characteristics for at least one of amplitude-frequency characteristics and phase-frequency characteristics of each of the sub-carriers in advance;
and
frequency characteristic calculation means for adding the frequency characteristics to each of the sub-carriers generated by the sub-carrier generation means in a predetermined time unit based on the data of the frequency characteristics and outputting the addition result,
wherein the time domain conversion means receives the plurality of sub-carriers output from the frequency characteristic calculation means and converts the sub-carriers into the signal in the time domain.

3 more elements

A signal generation method that generates a signal in which a plurality of sub-carriers are arranged in a frequency domain, comprising:

a sub-carrier generation step of generating the plurality of sub-carriers based on a predetermined modulation system from input data;
a time domain conversion step of converting the generated plurality of sub-carriers into a signal in a time domain;
and
a frequency characteristic calculation step of adding, based on data of frequency characteristics for at least one of amplitude-frequency characteristics and phase-frequency characteristics of each of the sub-carriers which is stored in advance, the frequency characteristics to each of the sub-carriers generated in the sub-carrier generation step in a predetermined time unit and outputting the addition result,
wherein the time domain conversion step converts the plurality of sub-carriers output in the frequency characteristic calculation step into the signal in the time domain.

2 more elements

Dependencies are inferred from the claim text.

Signal generation device, mobile communication terminal test device including the same, signal generation method, and mobile communication terminal test method

Life of this patent

Signal generation device, mobile communication terminal test device including the same, signal generation method, and mobile communication terminal test method

Life of this patent

Abstract

Claims14