News
Thursday, September 24, 2009
Rohde & Schwarz and Radiocomp Partner To Demonstrate CPRI Competence
At 4G World, Rohde & Schwarz demonstrates the latest equipment development for testing LTE/WiMAX remote radio heads which communicate via the digital interface protocol CPRI.
Munich and Chicago, IL - At 4G World, Rohde & Schwarz demonstrates the latest equipment development for testing LTE/WiMAX remote radio heads which communicate via the digital interface protocol CPRI. Together with remote radio heads from Radiocomp, the CPRI test solution will be publicly showcased in Chicago for the first time.
Successful trials of the Rohde & Schwarz solution have been already carried out at various lead customers in Japan.
The R&S EX-IQ-Box digital interface module is a flexible solution for connecting signal generators, signal analyzers and communications testers from Rohde & Schwarz to devices or components that feature digital baseband inputs and/or outputs. It allows easy adaptation to standardized as well as user-specific digital interface formats. Rohde & Schwarz now extends this test solution to signal generation and reception in line with the Common Public Radio Interface (CPRI) protocol standard.
The new option R&S EXBOX-B85 for the R&S EX-IQ-Box enables the user to perform tests directly at the CPRI interface between the base station radio equipment control (REC) and the base station radio equipment (RE). Simulation of either the REC or the RE allows independent testing of the RE or REC, respectively. Hereby, the test solution helps to speed up time-to-market and to save valuable development resources. It delivers standardized signals that act as reference for maintaining the interoperability of products from different vendors. In the first release, the R&S EXBOX-B85 emulates the REC for testing the RE. Via a future software update it will also support emulation of the RE for testing the REC.
The connection to the device under test (DUT) is done via the enclosed CPRI specific breakout board, which supports small form factor pluggable (SFP) modules for the optical CPRI link. The interface is easily configured via the enclosed R&S DigIConf configuration software. All state-of-the-art standards such as 3GPP FDD (incl. HSDPA, HSUPA, HSPA+), LTE, WiMAX and CDMA2000 are supported. The test solution covers individual uplink or downlink operation as well as full duplex operation. Depending on the configuration, up to 24 signal streams with settable sample rates can be processed; line bit rates of up to 2457.6 Mbps are achieved. Control and management information can be inserted in realtime ("fast C&M").
The elaborate CPRI test solution from Rohde & Schwarz is a straight-forward approach to test CPRI™ radio equipment and additionally offers the flexibility to tailor the test solution to the task at hand. Its concept has been proven together with remote radio heads from Radiocomp.
In combination with Rohde & Schwarz signal generators and spectrum analyzers, the R&S EX-IQ-Box utilizes the enhanced functions of the signal generators (e.g. generation of digital communication signals, fading and AWGN simulation) and the signal analysis features of the spectrum analyzers (e.g. ACP and EVM measurements for digital standards).
The R&S EX-IQ-Box digital interface module and the new R&S EXBOX-B85 CPRI option are available from Rohde & Schwarz.
