In this article, the nonlinear effect of an RF power amplifier in a time division multiple access (TDMA) (IS-54 Standard) system is analyzed and an expression is presented of the estimation of the out-of-band emission levels for a TDMA power spectrum in terms of the [IP.sub.3] and the [IP.sub.5], as wel l as the power level of the signal.
The level of nonlinearity is specified in the IS-54 standard  by the out-of-band power emission levels.
Interim Standard 54 (IS-54
) by the Electronics Industries Association/Telecommunication Industries Association (EIA/TIA) laid the groundwork for North American time division multiple access (TDMA) digital cellular communications.
We were "transitioning between IS-54
and IS-136 so we were out of the TDMA market while transitioning.
The simulator is capable of both RF-to-RF and baseband-to-baseband interfaces with predefined channel models for GSM, DCS, IS-54
, IS-95, TETRA and International Telecommunication Union models.
The digital phone will work on AT&T Wireless Services' (AWS) TDMA (time division multiple access) system in Dallas, which in June was upgraded to the more advanced IS-136 standard from the older IS-54 standard AT&T is one of the first companies to roll out an upgraded system, with build-out in all 29 of its TDMA markets expected by the end of this year, a spokeswoman for the company said.
AT&T said pricing for the new handsets and service will be comparable to that of TDMA IS-54 systems.
The 89451A software is advantageous particularly for the analysis of NADC [Pi]/4 DQPSK signals in that it presets the instrument to assure compliance with IS-54
while making the relatively complex measurements.
The section also contains papers on second-generation systems; the Pan-European Cellular System; the IS-54
digital standard; code-division multiple access technology and the IS-95 North American standard; the Japanese cellular standard; CT-2, the British cordless telephone standard; Digital European Cordless Telephones; the race program; half-rate standards; modulation methods; wireless local area networks; and wireless data.