Interoperability?
Dueling "Standards"
Cellular
- Analog AMPS
- Narrow AMPS
- Digital TDMA
- Enhanced TDMA
- CDMA
PCS Technology
All digital, but 8 different proposals
- CDMA
- Digital TDMA (North American Digital Cellular)
- PCS 1900 (GSM-based TDMA)
LEO Services
Similar problems due to diverse, non-interoperable systems
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Randy H. Katz, randy@cs.Berkeley.edu, last updated: 2 Nov 95