PWT (Personal Wireless Telecommunications) Explained

PWT (Personal Wireless Telecommunications) is the US equivalent of DECT (Digital Enhanced Cordless Telecommunications). It’s essentially a standard for cordless telephony. Here’s a breakdown of its key features and specifications:

• Bandwidth: 20 MHz
• Frequency Range: 1.91 to 1.92 GHz
• Access Scheme: TDD/TDMA/FDMA (Time Division Duplex/Time Division Multiple Access/Frequency Division Multiple Access)
• Carrier Bandwidth: 1.25 MHz
• Total Number of Carriers: 8
• Channels per Carrier: 12
• Total Number of Channels: 96
• Handoff: Supported
• Transmission Data Rate: 1.152 Mbps
• Speech Data Rate: 32 Kbps
• Speech Coding: ADPCM (Adaptive Differential Pulse Code Modulation)
• Modulation Technique: π/4 DQPSK (Differential Quadrature Phase Shift Keying)
• Peak Output Power: 90 mWatt
• Mean Output Power: 10 mWatt
• Maximum Supported Cell Radius: 30-100 meters

Cordless Telephone Basics

For general information on cordless telephone systems and frequency allocations, refer to resources covering Cordless Telephone System basics.