R&S®TS8970 Mobile WiMAX™ RCT

RX/TX test system in line with WiMAX™ MRCT test specification

Technologies

Orthogonal frequency division multiple access (ODFMA) methods

With OFDMA transmission technology, multiple signals are transmitted simultaneously on a large number of carriers that are spaced at precise frequency intervals. OFDMA benefits include higher spectral efficiency, resilience to RF interference and reduced requirements with regard to power control accuracy. For a MIMO application, the critical benefit of OFDMA is its inherent robustness against fast multipath fading.

OFDMA methods are an essential part of almost all new transmission methods that are in the planning or implementation phase. The generators and analyzers in the R&S®TS8970 allow users to enable standards not based on IEEE 802.16e-TDD by means of key codes. The structure of the R&S®PASS user interface allows users to program their own test scenarios for further OFDM-based wideband applications.

Multi-antenna transmission and/or reception (MIMO technology)

Earlier generations of mobile communications systems concentrated on manipulating the usage of both frequency and time to maximize data throughput. The variations caused by multiple signal paths were regarded as a disadvantage (“fading”) to be minimized. With the benefits of today’s higher computing power, multiple-input, multiple-output (MIMO) antenna technology deliberately uses multiple signal paths to transmit data more reliably and/or to increase data throughput. The R&S®TS8970 permits the simulation of 2x2 MIMO scenarios as defined in the MRCT specification and is prepared for higher order MIMO.

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