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Vector Modulation Analysis 89600 VSA Software Option AYA

Technical Overviews

Technical Overview

- Over 40 digital modulation formats, including PSK, QPSK, QAM, FSK, VSB, custom APSK, SOQPSK

- Over 30 standard communication formats, including GSM/EDGE/EDGE Evolution, Wi-SUN, ZigBee, Bluetooth®

- Troubleshoot signals using modulation error analysis tools: EVM, IQ errors, and more

- Identify linear errors with adaptive equalization

- Automate tests with SCPI or .NET programmability

Flexible Vector Modulation Analysis

Option AYA is designed to analyze a wide range of digital modulations and standards including types as simple as BPSK or as complex as 4096 QAM, with presets for many cellular, wireless networking, and digital video standards as well.

Flexible measurement parameter setup, powerful error analysis, including EVM, and insightful displays help explain every aspect of a signal.

The many modulation types in Option AYA are just some of over 75 signal standards and modulation types supported by the 89600 VSA software. The 89600 VSA software is a comprehensive set of tools for demodulation and vector signal analysis.

These tools enable you to explore virtually every facet of a signal and optimize your most advanced designs. As you assess the tradeoffs, the 89600 VSA helps you see through the complexity.

If you want more flexibility on digitally modulated signal analysis, consider Option BHK (custom IQ modulation analysis) on 89600 VSA software. This additional option enables longer symbol length analysis capability with fully customized IQ map for signal quality measurements.

Technology overview

Vector modulation, also referred to as digital or complex, refers to modulation where both amplitude and phase are used simultaneously to carry information on a signal. Common examples are BPSK, QPSK, QAM and their many derivative forms.

Because they use two dimensions to carry information, these systems can transmit more data over the same bandwidth, making them more spectrally efficient. However, this comes at the cost of increasing complexity in system design, test, and build.

Versatile tools are needed to deal with the many inventive ways vector modulation is used. Both phase and amplitude must be acquired and analyzed. The modulation format and symbol rate used are specific to the application, and numerous transmit and receive filter designs exist to minimize spectral splatter.

Analysis and Troubleshooting

Complex modulation formats require modern tools for troubleshooting. Option AYA provides a rich set of flexible vector modulation displays, useful for everything from examining simulations to measuring prototype hardware’s results output. In all cases, error measurements help track down the source of problems in a signal.

Advanced digital demodulators

Successfully demodulate a signal knowing just the carrier frequency, filter type, and symbol rate; no need for external filtering, coherent carrier signals or symbol-clock timing signals.

Use the custom APSK capability to analyze signal types like on-off keying, 64 APSK as well as non-standard formats. Define a custom constellation based on up to 8 arbitrarily spaced rings and up to 256 points.

Unique error analysis tools

Reveal both RF and DSP problems using error vector magnitude (EVM), error vector spectrum and adaptive equalization.

Error vector magnitude

Pinpoint marginal conditions before they become system performance problems using the powerful EVM analysis tool.

- Compare the phase and magnitude of the input signal with an ideal reference signal stream

- View the average error as a single overall number, or on a symbol-by-symbol basis

- Use the EVM time or spectrum measurement to identify systematic

- Impairments not visible otherwise

Adaptive equalization

Identify and remove linear errors such as group delay distortion, frequency response errors, and reflections or multi-path distortion from I-Q modulated signals. Uncover DSP errors such as mis-coded bits or incorrect filter coefficients.

Save and recall signals for more effective troubleshooting

Capture a signal for later analysis or for comparison with later design iterations. Even if a production line across the world suddenly fails important tests, or you’re working with remote design teams, you can analyze the vector signal using Option AYA tools by recording the signal and re-analyzing at your convenience. A player window provides detailed access to the recording. You can also use the stop/play buttons on the main toolbar.

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