Simulates Carrier's Traffic Management Capabilities


ORLANDO, Fla., March 27 // -- CTIA Wireless 2007 -- Rohde & Schwarz today announced that its CMU200 universal radio communication tester now supports Enhanced Variable Rate Codec (EVRC-B) functionality, which will soon be incorporated in CDMA2000 wireless networks. EVRC-B gives wireless service providers the ability to dynamically adjust voice capacity on their network according to traffic conditions. The capability is provided free of charge to R&S CMU200 owners as a downloadable firmware upgrade.

CDMA2000 wireless networks generally use the EVRC speech coder/decoder (codec) today. When introduced more than a decade ago, it dramatically improved speech quality, especially at lower data rates, over the previous codec. EVRC compresses each 20 ms of 8-kHz sampled speech and outputs full-rate, half-rate, quarter-rate and eighth-rate frames. EVRC-B, developed by QUALCOMM, Inc. as Fourth Generation Vocoder(TM) (4GV(TM)), is the successor to EVRC that will soon be deployed in CDMA2000 networks. EVRC-B utilizes more efficient compression algorithms and allows selection of different operating points within the codec. This gives wireless service providers the ability to vary the operation of the codec to make trade-offs between network capacity and voice quality on a dynamic basis.

When enabled with the new firmware, the CMU200 can evaluate the performance of mobile phones and smart phones when operating with the EVRC-B codec. The user can adjust the compression rate much as a carrier would while performing various measurements to determine signal quality.

The R&S CMU200 universal radio communication tester is a comprehensive instrument that performs a wide array of tests that let manufacturers measure the performance of their products in accordance with wireless standards. It also gives users the ability to make general-purpose measurements and create their own test routines. The CMU200 is supported by a full complement of options that make it configurable to meet specific measurement needs. Typical applications include subsystem design, application development, production testing, quality inspection, and base station simulation.

Release of the new firmware for the CMU200 continues the company's commitment to provide the latest measurement tools to owners of its instruments at little or no additional cost. The firmware upgrade for the CMU200 is available now from Rohde & Schwarz.

Rohde & Schwarz

Rohde & Schwarz is an independent group of companies specializing in electronics. It is a leading supplier of solutions in the fields of test and measurement, broadcasting, radio monitoring and radiolocation as well as mission-critical communications. Established more than 70 years ago, Rohde & Schwarz has a global presence and a dedicated service network in more than 70 countries. It has approximately 6,400 employees and achieved net revenue of $1.3 billion in the past fiscal year. Company headquarters are in Munich, Germany.

Source: Rohde & Schwarz

CONTACT: Chris Petrole, +1-410-910-7836, chris.petrole@rsa.rohde-schwarz.com, or in Europe, Monika Roth, +49-89-4129- 12232, monika.roth@rsd.rohde-schwarz.com, both of Rohde & Schwarz

Web site: www.rohde-schwarz.com/USA
http://www.ctiawireless.com/

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