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SeaMax IQ Generator

 

802.16d BS & SS Receiver Testing

Overview

SeaMAX IQ Generator Pro designed to generate ideal/impaired IEEE 802.16-2004 OFDM PHY compliant RF signals in real time. The software also creates baseband I/Q waveform file based on the user-defined Base Station (BS) and Subscriber Stations (SSs) settings and saves the signal files in .txt format on computerís local hard drive or any other specified location.

The generator provides functionality to create WiMAX TDD frame with user configurable downlink and uplink bursts. It provides an intuitive graphical user interface to configure uplink and downlink waveforms, CP, BW and Frame length as per standard specifications.

To verify receiver robustness, SeaMAX IQ generator Pro provides various additive impairments which can be added to the test signal and the configuration can be saved in .txt format. These signal files can be downloaded to AWG for IF/RF signal generation or SeaMAX Fixed IQ Analyzer Pro/Third party analyzer for analysis.

SeaMAX IQ generator allows WiMAX equipment manufacturers, chipset developers, designers and RF engineers to test both subscriber and base stationís receiver functionality throughout the development phase of their products.

Easily create signals to evaluate the performance of your radio designs, and the components that comprise them, under various parametric and functional test conditions at baseband, RF and microwave frequencies.
 

Features

 

Standards Supported

   
IEEE 802.16-2004 OFDM PHY
   

Over-sampling Ratio

   
1X, 2X, 3X, 4X, 5X, 7X, 8X
   

Frame Setup Mode

   
MAC PDU/ Physical
   

Ranging back-off start/end

   
0-255
   

Frame duration

   
2.5/4/5/8/10/12.5/20 ms
   

Bandwidth

   
1.25MHz to 20 MHz in steps of 250 KHz
   

DL Burst configurations

   

MAC PDU Mode

   
MAC w. CRC; MAC w/o CRC; RAW
   

Rate ID/DIUC

   
Modulation/Rate
   

DCD count

   
[0,255]
   

DL Channel ID

   
[0,255]
   

MAC CRC order

   
LSB first
MSB first
   

Data Type

   
Individually configurable for each MAC PDU
   

Data Pattern

   
User defined
Text
Pre defined
PRBS
   

CID

   
For Each burst and MAC PDU
   

Measurements

   
IQ plots
Power Spectrum plot
Transmit power plot
CCDF
Constellation Diagram
 

UL Burst Configurations

   

MAC PDU Mode

   
MAC w. CRC
MAC w/o CRC
RAW
   

UIUC

   
Modulation/Rate
   

UCD count

   
[0,255]
   

UL channel ID

   
[0,255]
   

MAC CRC order

   
LSB first
MSB first
   

CID

   
For Each burst and MAC PDU
   

Data Type

   
Individually configurable for each MAC PDU
   

Data Pattern

   
User defined
Text
Pre defined
PRBS
   

Saving Options

   
BS IQ .txt file
SS IQ .txt file (for all SSs separately )
BS+SS combined IQ .txt file
   

Graphical Utilities

   
User defined plot color and style of lines
Zoom
Markers, Print Data
   

Impairments Supported

   
Memoryless Nonlinearity
AWGN
SUI Channel models (1 to 6)
Phase noise
Quadrature skew
DC Offset
I/Q gain imbalance
Frequency Offset
   

Display parameters

   
Sampling Frequency
Sub-carrier spacing
OFDM Symbol Interval
 
Power Spectrum Plot

Figure 1
IQ Plot

Figure 2
 

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