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???
02/19/08 14:20
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 		 #151133 - Radiation patterns
Responding to: ???'s previous message
Esko Ilola said:
They [GSM Basestations] have very seldomly circular radiation pattern.

A circular pattern would be known as an Omni-directional site.
This would be used where the operator wants to cover the maximum area with a single site; eg, in sparsely-populated areas.

Instead a mast usually has 2, 3 or even 4 TX antennas all pointing to different directions

These would be known as Sectored sites.
These would be used in densely-populated areas, where the operator needs to provide the maximum capacity.

Sectored sites might also be used to cover just a highway, and not the unpopulated coutryside around it...



List of 37 messages in thread
TopicAuthorDate
GSM based vehicle tracking: Code and Sub-Routines            01/01/70 00:00      
   GNU GPL terms and conditions?            01/01/70 00:00      
      Just a thought?            01/01/70 00:00      
         vehicle tracking, ....            01/01/70 00:00      
            Re:Vehicle tracking, ....            01/01/70 00:00      
         it's nice that he chose to share his work.            01/01/70 00:00      
      Re: GNU GPL terms and conditions?            01/01/70 00:00      
          Re: GNU GPL terms and conditions?            01/01/70 00:00      
         I see - but disagree            01/01/70 00:00      
            Re: I see - but disagree            01/01/70 00:00      
               the trouble is, though...            01/01/70 00:00      
               I say "Purge the EXE"            01/01/70 00:00      
                  Self-extracting ZIPs            01/01/70 00:00      
   Accuracy of GSM based positioning depends            01/01/70 00:00      
      Re: Accuracy of GSM based positioning            01/01/70 00:00      
         Multipath propagation and more            01/01/70 00:00      
            Radiation patterns            01/01/70 00:00      
            Theoretical            01/01/70 00:00      
               How's about adding GPS...?            01/01/70 00:00      
         Some more reading to do            01/01/70 00:00      
            wonderful new word, someone contact Webster            01/01/70 00:00      
               New to me too            01/01/70 00:00      
         Cell ID might not be enough            01/01/70 00:00      
            correction            01/01/70 00:00      
               Thanks !            01/01/70 00:00      
            Re: Cell ID might not be enough            01/01/70 00:00      
   Alternate download ZIP file            01/01/70 00:00      
      File sizes            01/01/70 00:00      
         Bright side            01/01/70 00:00      
   What's an "SRT"            01/01/70 00:00      
      SRT=Subroutine            01/01/70 00:00      
   Code for GSM based tracking.            01/01/70 00:00      
      No problem with that            01/01/70 00:00      
         Re: No problem with that            01/01/70 00:00      
   just curious            01/01/70 00:00      
      Accuracy of a GSM positioning system            01/01/70 00:00      
   Video of the GSM based tracking system in action            01/01/70 00:00      

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