GPRS/EDGE Handset Hardware

In this chapter we examine the hardware requirements for a GPRS tri-band phone
capable of supporting higher-level modulation techniques. We address the design
issues introduced by the need to produce the following:
A multislot handset. Capable of supporting GSM (8 slots) and US TDMA
(3/6 slots)
A multiband handset. 800, 900, 1800, 1900 MHz
A multimode handset. Capable of processing constant envelope GMSK modulation
(GSM) and higher-level modulation with AM components (US TDMA)
We need to combine these design requirements with an overall need to minimize component
count and component cost. We also must avoid compromising RF performance.