Rohde and Schwarz FSL-K93 - WiMAX IEEE 802.16 OFDM/OFDMA Application Firmware

The following is an overview of part numbers in this group:

• FSL-K92 - WiMAX IEEE 802.16 OFDM Application Firmware
• FSL-K93 - WiMAX IEEE 802.16 OFDM/OFDMA Application Firmware
• FSL-K92U - Upgrade from FSL-K92 to FSL-K93

The R&S FSL-K93 option includes all functions of the FSL-K92 option. Results and graphical display are identical in both options. In addition, R&S FSL-K93 supports the IEEE802.16e-2005 standard for Mobile WiMAX signals, and therefore expands the FSL‑K92 option to measurements on OFDMA signals. The FSL-K92 can be upgraded to FSL‑K93 in all of the analyzers.

The R&S FSL-K93 option includes automatic demodulation based on the DL map. The analyzer reads the DL map and demodulates the OFDMA signal in line with the map. This feature enables the user to measure WiMAX OFDMA signals without defining the DL map and the modulation formats. In addition, it provides information about the detected map (allocation of the bursts), which is the first step in evaluating the MAC layer. Moreover, the user can test whether the signals comply with the standard, which is a prerequisite for interoperability tests.

The user can also define the DL map manually. For this purpose, the R&S FSL-K93 option provides a user-friendly DL map editor, where the number of subscribers, the assignment of subchannels, and the modulation modes are defined. Moreover, the user can specify the number of active subchannels as well as the type and number of permutation zones. Furthermore, the DL map or setting files can be directly loaded from an R&S SMU200A vector signal generator connected via LAN.

The subranges of the WiMAX™ signal in the time domain (highlighted in green) are demodulated. The burst summary provides information about the bursts of the analyzed zone, e.g. modulation mode and EVM. The raw data bit stream can be displayed for all bursts, including the FCH field.

In the Frame Configuration menu, the UL and DL map as well as the individual zones of the OFDMA signal can be defined by means of a table. This WiMAX™ signal consists of two zones, i.e. a PUSC zone, which is analyzed (see check mark in first table), and a FUSC zone. The second table shows the burst configuration. All settings can be graphically displayed in Burst map or Zone map.