ORFS stands for ''Output RF Spectrum'', where 'RF' stands for

Radio Frequency Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around to around . This is roughly between the uppe ...

. The acronym ORFS is used in the context of mobile communication systems, e.g.,

GSM The Global System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation ( 2G) digital cellular networks used by mobile devices such as ...

. It stands for the relationship between (a) the frequency offset from the carrier and (b) the power, measured in a specific bandwidth and time, produced by the mobile station due to effects in modulation and

power ramp In telecommunications, power ramp is the way in which the signal increases ("power-on ramp") or falls off ("power-down ramp"), which may result in spectral splatter. See also * Soft start * Power gating * Voltage scaling Dynamic voltage scaling ...

ing and switching. ORFS measurements are defined and required in order to prove conformance by various institutions, e.g., the U.S.

Federal Communications Commission The Federal Communications Commission (FCC) is an independent agency of the United States federal government that regulates communications by radio, television, wire, satellite, and cable across the United States. The FCC maintains jurisd ...

(FCC) or

ETSI The European Telecommunications Standards Institute (ETSI) is an independent, not-for-profit, standardization organization in the field of information and communications. ETSI supports the development and testing of global technical standard ...

References

See also