ArbIQ

ArbIQ
Modulated Signal Creation Software

The ArbIQ software package allows wireless design and manufacturing engineers to use the most flexible signal generation tool, the Arbitrary Waveform Generator (AWG), to solve almost all their wireless test stimulus needs at baseband or IF/RF levels, no matter if the required signals are analog or digital. AWGs do not suffer most of the limitations of traditional generators as any signal, simple or composed, clean or noisy, ideal or impaired, can be downloaded to and played back by them. In order to get the most of this tool, test engineers must have the right signal creation and edition tools, not exposing them to the cumbersome details of the complex signals and the instrumentation. "Wireless, RADAR, Coherent Optical signals are just a few mouse clicks away of being generated by any Arbitrary Generator."

Comprehensive Modulation Support
Simple and advanced modulation support. From the simplicity of QPSK up to the complexity of 3G UMTS inclusing HSDPA.

Signal Visualization and Validation
ArbIQ provides a complete analysis and visualization toolbox to help users to validate their signals and speed-up signal design.

Real-World Impairments
Adding linear and non- linear impairements as well as multi-path effects and noise is extremely easy with ArbIQ.

Open Architecture
ArbIQ offers the capability of importing multiple signal characteristics and even includes a fully featured modulation creation tool.

Application Support...
Mobile and Wireless Networks, RADAR, Coherent Optical are just some of the applications ArbIQ can address.

...with Ease of Use and High Signal Quality
High dynamic range, seamless wrap-around artifact free signals can be obtained with very short compilation time.

AWGs, in the other hand, are only limited by their resolution, sampling speed, record length and intrinsic linearity. With devices reaching or exceeding 16-bit resolution, 12 GS/s and 80+dB SFDR, multi-carrier, channel coded, high quality signals can be generated easily. ArbIQ provides the wireless engineer with the right tool to easily define, analyze, and transfer such signals to the target AWG. ArbIQ offers all the capabilities needed to use any AWG right in your signal environment: Baseband, IF, and RF. Mixed signal environments are not a problem as ArbIQ supports PAT formats used by digital outputs in both AWG and Pattern Generators making easy the integration of DSP based software-radio architectures. Continuous signal generation requires seamless signal repetition. Modern AWGs provide seamless looping and sequencing but spurious-free signal generation requires continuity at all levels: sample, carrier, symbol, baseband filtering, and, in some cases, channel coding. ArbIQ takes care of all these requirements by automatically adjusting the carrier and modulation parameters and performing continuous signal convolution to eliminate simultaneously any wrap-around effects in all the component signals. The result is a clean signal without any degradation at all in any frequency, time, or modulation domain parameter, no matter the number of carriers or the modulation schemes (analog, QAM, FSK/MSK) involved. Extensive application support includes: General-purpose modulation: QPSK, QAM, FSK...
Advanced Standards: UMTS, DVB, WiFi...
Radar: Chirp, Barker Codes, ...
Coherent Optical Communication: PM-DQPSK... ArbIQ offers all the capabilities needed to use any AWG right in your signal environment: Baseband, IF, and RF. Mixed signal environments are not a problem as ArbIQ supports PAT formats used by digital outputs in both AWG and Pattern Generators making easy the integration of DSP based software-radio architectures

Comprehensive Modulation

Signal Visualization

Real-World Impairments

Open Architecture

MODULAR incorporates a wide range of modulation schemes support including: BPSK, QPSK, O-QPSK, pi/4-DQPSK
8PSK, O-8PSK (EDGE)
QAM-16/32/64/128/256/512/1024
8-VSB, 16-VSB
2-FSK, 4-FSK, 8-FSK, 16-FSK, 32-FSK, (G)MSK
Sinusoidal Analog: AM, FM, PM Channel coding and channelization are important features for 2G, 2.5G and 3G mobile telephony, wireless LAN and digital TV testing. MODULAR offers channel-coded signals for the following environments: DVB-C: QAM-64, QAM-256. Scrambling, interleaving, Reed-Solomon and differential coding supported.
CDMA IS95 (CDMAOne) Downlink: Spreading, channelization, complex scrambling supported.
WCDMA IMT2000 (UMTS) Downlink: Spreading factor, complex scrambling, channelization (OVSF codes), CCPCH-SCH multiplexing, HSDPA support.
IEEE-802.11b: DSS spreading, Barker sequences, CCK modulation. As each carrier is arbitrarily defined, emulation of multiple signal environments, interfering signals, and transients are easily accommodated.

BPSK, QPSK, OQPSK, pi/4-DQPSK, 8PSK, QAM16/32/ 64/128/256/512/1024, N-FSK, GMSK can be directly selected.

CDMAOne (IS95) and UMTS (3GPP) downlink signals can be fully defined by the user. Compressed mode and HSDPA are supported.

Bluetooth, 8/16VSB, Zigbee, EDGE, DVB-C, IEEE 802.11b. Sample IQ files to generate WiMedia or DVB-T signals are available.

Users can define up to 512 carriers with its own modulation parameters, both at the IF/RF or baseband (IQ) levels.

Multiple choices of base-band filters and roll-off factors are available to the users. Analog modulations can be generated as well.

The mathematical, predictable nature of signals generated by AWGs makes them ideal for degradation analysis. ArbIQ incorporates a bunch of analysis tools and features that can be used as a reference to be compared with results coming out of measurement instruments such as oscilloscopes, spectrum analyzers, or vector signal analyzers (VSAs). Graphs and analysis windows are also useful for documentation or educational purposes. Additionally, ArbIQ, through an option, is capable of exporting signals in a variety of formats that can be read by spreadsheet applications such as Excel, or scientific/ mathematical packages such as Matlab for further analysis, manipulation, and/or documentation.

Phase/Constellation Diagrams
Pic 1
The Constellation Diagram is the primary validation and analysis tool for digitally modulated signals. Signal trajectory between symbols is also shown. Eye Diagram
Pic 2
Signal evolution in the time domain may be observed from the statistical or real-time standpoint. Eye diagrams are shown for the I and Q components. CCDF
Pic 2
The CCDF curve is a very useful tool to validate the distribution of power over time. Usage of cursors eases the comparison with measuring instruments. Histogram Analysis
Pic 3
Grey scale display and histogram analysis in the IQ plane helps to pinpoint coding or data related issues when not all symbols are equally probable. Spectrum
Pic 3
Spectrum analysis is the most useful tool to analyze the distribution of multi-carrier signals or the effects of non-linearities in the frequency domain.

Margin testing requires more than ideal signals. Impairments, noise and interfering signals must be added in order to obtain the required results. ArbIQ, with its built-in impairment addition tool, which includes carrier feed-through and quadrature error and imbalance, and its multi-carrier capability makes it possible to solve this need with just one box. Non-linear impairments such as amplifier distortion (AM/AM, AM/PM distortion) are also supported. Non-linear support also helps implementing and experimenting pre-distortion correction for high-power amplifiers. Multipath emulation is as easy as filling the corresponding form with the description of the different paths by entering the delay/amplitude/ phase for each delay. Testing equalizers and rake receivers has never been so easy.

Linear Distortion
Pic 1
Quadrature error, quadrature imbalance, and carrier feed-through can be applied to each carrier independently and simultaneously. Non-Linear Distortion
Pic 2
AM/AM and AM/PM distortions are defined by applying a polynomial. This featre can be used for both signal distortion or pre-distortion. Multi-Path
Pic 2
Multipath is easily set by defining all the coefficients for each path (delay, attenuation, and phase) so the path impulse response is fully established. BW Limited Gaussian Noise
Pic 3
Banwidth-limited noise can be added to any signal or signal combination. Noise parameters include the central frequency, its BW, level, and crest factor. Power Ramping
Pic 3
Amplitude changes can be emulated using the power ramping tool. Flexibility allows generating burst and defining the transient shape and duration.

ArbIQ is an open environment. Users can choose among the built-in signal parameters or define their own. Signals characteristics as baseband filtering and payload data can be imported from externally defined files. Users can even create their own modulation schemes by editing their constellation diagrams and symbol mapping. Non-supported modulation schemes can also be accommodated through the external I-Q symbol/envelope feature.

Modulation Schemes
Pic 1
The modulation scheme edition tool allows users to define constellations with any geometry, with or without offset (Q delay) or rotation for each symbol. Baseband Filtering
Pic 2
Defining user-defined filters is s easy as specifying the isolated pulse response. This strategy allows also to define any linear distortion. Data
Pic 2
Any PRBS sequence and pattern can be selected. Patterns can accomodate random data so training sequences or frame synch sections can be defined. I & Q Signals
Pic 3
Any I and Q signal can be defined in the time domain and imported by ArbIQ. Signal is then resampled and processed just as any internally created one.

Name: Enter Name

Required

Email: Enter Email

Required

Company: Enter Company

Required

Work Address: Enter Address

Required

City: Enter City

Required

State: Enter State

Required

Zip code: Enter Zip

Required

Country: Enter Country

Required

Submitting Form...

The server encountered an error.

Form received.

Message: Enter Your Message

Required

© Arbitrary Resources, S.L. All rights reserved