Mapping SISO and MIMO Channel Performance

1
Mapping SISO and MIMO Channel Performance
2
Comparing Different Channel Models

• Three categories of channel models
• Category A SISO channel models based on ITU
  channel models
• Category B MIMO channel models based on the ITU
  channel models with fixed spatial parameters.
• Category C MIMO Channel models based on the SCM
  channel model.
• Questions
• How do we use the fixed spatial parameters in
  category B with the ITU models to generate the
  MIMO Link? (each individual SISO link should
  still exhibit the same power delay profile
  specified by the ITU models).
• How do we compare a link level sim based on
  category B to another link level sim based on
  category C? In another way, two MIMO channels,
  first is generated based on cat. B and the other
  on cat. C. Do they have the same statistics in
  time/space? Do they exhibit the same average SNR
  and/or diversity gain?

3
Effective Signal to Noise Ratio Concept

• Let us consider a channel with a complex gain h,
  the receiver SNR is
• Channel Capacity
• Consider now, N links, each with a channel gain
  hi, the total capacity is

4
Effective Signal to Noise Ratio Concept

• What would be the corresponding SISO link that
  will have the same total capacity