DMR Coverage & Traffic Capacity Planning

[primig]

DMR Trunking System Coverage & Traffic Capacity Planning
Hytera Guidelines
2011
Only 6 pages, a pity its not more detailed - anyone have something more detailed from a DMR manufacturer, or even an actual radio planning report from an offer or project?

[primig]

Introduction to DMR and the DMR Association
14 September 2012

Learning Objectives:
1. Know what DMR and ETSI stand for.
2. Understand who the DMR Association is and what they do.
3. Clarify the differences between DMR Tiers I, II and III.
4. Learn some of the features and business benefits of DMR.


An extract that will help with coverage calculations:

DMR Theoretical Range
• A 1mS Guard Slot exists between neighboring TDMA slots
• If DSP Clock has accuracy of +/-2ppm, this accounts for 0.5mS
• Remaining 0.5mS available to account for propagation delays
• In 0.5mS, the signal from TxA travels: 3 x 10⁸m/s x 0.5mS = 150km
• In practice, this number is halved to account for Uplink and Downlink
• So, the theoretical range limit of the DMR TDMA system is 75km.