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File name: | 5980-1237E.pdf [preview 5980-1237E] |
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Group: | Electronics > Other |
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File name 5980-1237E.pdf Designing and Testing cdma2000 Mobile Stations Application Note 1358 Delay Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 1 Basic Concepts of cdma2000 . . . . . . . . . . . . . . . . . . . . . . . . . .4 1.1 Spreading rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 1.2 Radio configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 1.3 Forward link air interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 1.4 Reverse link air interface -- HPSK . . . . . . . . . . . . . . . . . . . . . . . . . .6 1.5 Forward link power control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 1.6 Differences between cdma2000 and W-CDMA . . . . . . . . . . . . . . . . .8 2 Design and Measurement Issues . . . . . . . . . . . . . . . . . . . . . .9 2.1 Maximizing battery life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 2.1.1 CCDF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 2.1.2 ACPR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 2.2 Measuring modulation quality . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 2.2.1 QPSK EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 2.2.2 Composite rho . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 2.2.3 Code domain power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 2.2.4 Symbol EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 2.2.5 Symbol power versus time . . . . . . . . . . . . . . . . . . . . . . . . . .24 2.2.6 Demodulated bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 2.3 Measuring receiver performance . . . . . . . . . . . . . . . . . . . . . . . . . .25 2.3.1 Performance tests at variable data rates . . . . . . . . . . . . . . .25 2.3.2 Quasi-orthogonal functions . . . . . . . . . . . . . . . . . . . . . . . . .26 Appendix: Agilent Solutions for cdma2000 MS Design and Test . . . . . . . .27 Acronym Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 Related Literature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 2 Introduction One of the technologies meeting the IMT-2000 requirements for a third generation (3G) global wireless communications system is cdma2000, also known as IS-20001. The Third-Generation Partnership Project 2 (3GPP2) wrote the speci |
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