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Press Release 2006
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Amersfoort, The Netherlands -
January 27, 2006 Multi-format OFDM analysis and generation software for wireless and broadcast testing
Yokogawa Europe has introduced new PC-based multi-format OFDM (orthogonal frequency division multiplex) analysis and generation software utilities for use with the company’s ranges of wireless test instruments, extending their application to emerging technologies such as WiMAX, 802.11n, Super3G, 4G and ISDB-T and DVB-T digital broadcasting.
The analysis software is designed for use with Yokogawa’s VN7100 wideband modulation analyser, while the generation software is designed for use with the VB8000 and VB8300 baseband signal generators or with the VG3000E/VG6000 synthesised vector signal generators with the arbitrary waveform generator option.
The multi-format OFDM signal analysis utility analyses the OFDM modulated signal as measured by the VN7100, with the measured signal transferred from the instrument to the PC via an Ethernet connection. Parameters analysed include frequency spectrum, error vector magnitude, flatness and complementary cumulative density function. The software allows the user to freely define parameters such as the training sequence file, the pilot setup file and the modulation format of subcarriers. Non-standardised OFDM modulated signals can be analysed by the utility with a user-defined file. The multi-format OFDM signal generation utility generates the OFDM modulated signal for use in the appropriate instrument, and again allows the user to define the training sequence file, pilot setup file and modulation format of subcarriers. Non-standardised OFDM modulated signals can be generated via a user-defined file. The software will handle modulation parameters of between 64 and 8192 FFT points, and will carry out modulation processing to BPSK, QPSK, Pi/4 QPSK, 8PSK, 16QAM, 64QAM, 256QAM, DBPSK, DQPSK, D8PSK operations. The guard interval size ranges from 1 to 25% of the number of FFT points, and input data is an arbitrary bit string file. Standards currently supported by both utilities include 802.16-2004 OFDM (WiMAX), 802.11a (Wi-Fi), ISDB-T (Terrestrial Integrated Services Digital Broadcasting). Future support will include 802.16e OFDMA, 802.11n, Super3G, 4G, and DVB-T (DVB-H). For more information about OFDM click here About Yokogawa Test & Measurement Yokogawa Test & Measurement Division, which trades in Europe under the name of Yokogawa Measurement Technologies, is a major worldwide force in the test & measurement market, with products that include portable test instruments, recorders and data-acquisition systems, semiconductor-related test systems, oscilloscopes, power meters, and wireless and optical communications test equipment. Yokogawa Measurement Technologies is the new identity that has been created for the electronic test & measurement activities of Yokogawa within Europe. Yokogawa has recently restructured its measurement business following the acquisition of Ando Electric Co., Ltd., which has created a major world force in the test & measurement market. The acquisition is the first stage in Yokogawa's plans to become one of the top three test & measurement suppliers in the world by 2008.
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