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| WiMAX BS and CPE RX Testing |
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SeaSolve’s SeaMAX Generator Suite consists of signal generation solutions for fixed- and mobile-WiMAX systems compliant to the IEEE 802.16d-2004 and 802.16e-2005 standards, respectively.
Through signal generation, users are capable of testing the receiver characteristics of a DUT at the PHY layer, with the added ability of defining crucial MAC level parameters for the downlink and uplink subframes. The SeaMAX Generator Suite features the creation of multiple MPDUs in each DL/UL burst, with user-defined payload lengths. The mobile-WiMAX generators additionally support signal characteristics specific to OFDMA such as variable FFT sizes, boosting and sub-channelisation.
In order to characterize receiver performance over a broad range of signal qualities, the SeaMAX Generator Suite also allows the emulation of various RF impairments and channel models including, but not limited to, AWGN, frequency offset and SUI/mobility models.
The solutions are offered in both offline and online (real-time) flavors. The offline modules work with the creation of signal IQ data that can be offloaded to a 3rd-party waveform generator. The online modules are meant to be integrated into various RF vector signal generators in order to facilitate real-time signal generation in common WiMAX frequency bands (i.e. 2.5 GHz, 3.5 GHz and 5.8 GHz). |
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The SeaMAX generator Suite is available in three different Modules
(for detailed description on individual modules click on the links below) |
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| Highlights |
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PHY |
OFDM and OFDMA |
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Zone type supported |
PUSC |
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FFT sizes |
2048, 1024, 512, 128 |
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Cyclic prefix |
1/4, 1/8, 1/16, 1/32 |
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Bandwidths |
1.25, 3.5, 5, 7, 8.75, 10, 14, 17.5, 20, 28MHz |
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Modulation formats |
BPSK (Pilots only), QPSK, 16QAM, 64QAM |
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Data payload types |
User defined, Text, Predefined, PRBS |
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| Frame configuration for Base Station |
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PN index |
0 to 113 |
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Frame duration |
2, 2.5, 4, 5, 8, 10, 12.5, 20 ms |
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DL ratio |
50% to 75% |
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Sub channel bitmap |
6 bit mask (111111) |
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DLMAP repetition factor |
1,2,4,6 |
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MAP Type |
Compressed/Normal |
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No. of OFDMA symbols in UL zone |
Configurable in steps of 3 OFDMA symbols |
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DL burst configuration fields |
No. of DL Bursts
Modulation-Code rate, OFDMA symbol offset, Sub channel offset, Boosting, No. of OFDMA symbols, No. of Sub channels, Repetition Coding Factor, Data payload type, Payload Length (bytes) for each DL Bursts |
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UL burst configuration fields |
No. of UL Bursts
CID, Code rate, Duration in OFDMA slots
Repetition Coding Factor for each UL bursts |
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| Frame configuration for Mobile Subscriber Station |
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Segment |
0, 1, 2 |
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UL_permbase |
0 to 69 |
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Uplink burst configuration fields |
No. of UL Bursts (one)
OFDMA symbol offset, Sub channel offset, Symbols in UL zone, Number of UL slots, Modulation Type-Code Rate, Repetition factor, Data Payload type, Payload Length (bytes) for each UL Bursts. |
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| Parameter display |
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| Sampling frequency (Hz), Delta F (Hz), Segment, Allocation start time (Sec) for downlink subframe and OFDMA symbol time, Sub carrier spacing, sampling frequency, number of used carrier for uplink sub frame. |
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| Plots |
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| IQ, Transmit power, CCDF, Constellation diagram, Power Spectrum with mask and 2D Frame view. |
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| Impairments |
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| AWGN and Frequency offset |
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| Saving data |
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| Save IQ data in.txt format for base station generated frame & Mobile Subscriber generated ranging/data frame. |
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| Graphical utilities |
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| Print, Zoom, Set Markers and change the appearance of plot, color, line style and thickness. |
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