A Channel Bandwidth Illustration

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A Channel Bandwidth Illustration
C802.20-03/112

• Prepared by
• Walter Rausch, Sprint Broadband

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Whats Important About Bandwidth?

• Per user performance to exceed 3G capabilities
  (with spectral efficiency, drives minimum
  bandwidth requirements)
• Must fit into existing bandplans
• Allow the evaluation group to select a test
  criteria
• No system can be designed without specifying a
  channel bandwidth

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Beyond 3G Performance

• We are specifying performance targets beyond that
  offered by 3G systems.
• Currently, the only competition in this space are
  fixed systems based on cable or DSL
  infrastructures.
• The goal is mobility with DSL-like performance.

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Worldwide Bandplans

• Worldwide, nearly all regulatory bodies make
  spectrum available such that the minimum common
  divisor is 5 MHz

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Test Evaluation Requirements

• Selection of a channel bandwidth is required for
  the evaluation group to specify test criteria
• Final system designs will require the
  specification of the occupied channel bandwidth

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Channel Bandwidth Illustration
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Recommendation

• A 5 MHz channel bandwidth provides adequate
  spectrum to meet the 802.20 PAR
• Worldwide, a 5 MHz channel bandwidth fits the
  current regulatory schema
• A 5 MHz minimum specification will scale smoothly
  to fit large spectrum allocations
• In an Nx5 MHz configuration, N1, 2, 3, ½, ¼, or
  another multiple, to allow for sub- or
  super-channel operation