|
IEEE 802.16 BS + SS
Signal Analyzer |
|
IEEE 802.16-2004 standard
released in June 2004 specifies the air
interface of fixed broadband wireless access systems The
802.16-2004
standard describes four different air interfaces. One of these
interfaces is
optimized for non-line-of-sight, RF frequencies less than 11 GHz
and
distances up to 30 km. Although the standard has officially named
this
PHY layer as WirelessMAN-OFDM, many people refer to it as the
WiMAX
air interface. WiMAX stands for Worldwide Interoperability for
Microwave Access.
|
|
|
IEEE 802.16
IQ Analyzer Features |
Supported modes
Uplink (SS) and Downlink (BS)
Modulation technique
OFDM 256
Duplex mode -TDD, H-FDD
Supported file formats
BS IQ .txt file
SS IQ .txt file
BS+SS IQ .txt file
Display parameters
Decoded raw data
DL Bursts Length (Symbols)
Cyclic Prefix
DL Bursts Rate
EVM in % rms and dB
Pilot EVM in % rms and dB
Number of symbols in received
frame
Frequency offset
Sampling rate
FCH, DL MAP, UL MAP, UCD, DCD,
BS-ID, Frame number and duration, CCC
Error detection
Indicates PHY CRC errors
Bandwidth range
1.25MHz to 20 Mhz in steps of
250 Khz
Modulation Formats
BPSK1/2, QPSK1/2, QPSK3/4,
16QAM ½, 16QAM 3/4, 64QAM 2/3, 64QAM3/4.
Measurements
IQ
Power Spectrum
Transmit power
CCDF
Channel response
Spectral flatness
Constellation Diagram
EVM/Subcarriers
EVM/Symbols
Data bits
Graphical utilities
User-defined plot color
User-defined style of lines
Zoom
Markers
Auto Scale for better viewing
of PSD & CCDF curves
Print data
|
|
IEEE 802.16
IQ Analyzer Overview |
SeaMAX IQ Analyzer is IEEE 802.16-2004
standard specific measurement, testing and analysis tool for WiMAX
Base Station (BS) and Subscriber station (SS) as per OFDM physical
layer specifications. SeaMAX IQ Analyzer lets you set up the test
bench for the complete analysis of BS and SS data in TDD and H-FDD
mode.
SeaMAX IQ Analyzer offers an extensive range of preprogrammed offline
analysis and measurement features. The import function loads the IQ
signal files from standard file format (.txt) and lets you visualize
and analyze the WiMAX transmitter parameters including effect of the
RF impairments like fading channels, frequency offsets, IQ mismatch on
the downloaded RF signal.
SeaMAX IQ Analyzer analyses Physical layer Header information and also
important MAC related system parameters like DLMAP, ULMAP, UCD and DCD.
Measurements set include Power Spectrum, EVM, Constellation CCDF, I/Q
Plot, Channel Response, spectral flatness with extensive graphical
capabilities.
SeaMAX IQ Analyzer helps RF and Baseband engineers to analyze and
troubleshoot WiMAX signals.
|
|
IEEE 802.16
IQ Analyzer Advantages |
Examine the performance of
WiMAX transmitters
Verification of chipset
designs
Diagnose RF problems
Analyze the effects of
impairments
|
|
IEEE 802.16
IQ Analyzer System requirements |
Disk Space : 100 MB; RAM :
1GB
Windows 2000/XP
LabVIEW 7.1 or Runtime Engine 7.1
|
|
IEEE 802.16
IQ Analyzer Screenshots |
|
Constellation
of Base Station and Subscriber Stations |
|
SeaMAX IQ
generator provides a color constellation which clearly
differentiates between pilots, headers and bursts. |
|
Transmit Power
Plot of Base station and Subscriber Stations with the TTG gap |
|