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IEEE 802.15 TG2 Coexistence Tel-Aviv January 13, 2000

IEEE 802.15 TG2 Coexistence Tel-Aviv January 13, 2000. Oren Eliezer Texas Instruments Israel OrenE@ti.com. Definition. The realization and consideration of another wireless system in the shared environment of operation Interoperability, in contrast. A Measure of Coexistence.

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IEEE 802.15 TG2 Coexistence Tel-Aviv January 13, 2000

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  1. IEEE 802.15 TG2 CoexistenceTel-Aviv January 13, 2000 Oren Eliezer Texas Instruments Israel OrenE@ti.com Oren Eliezer, Texas Instruments

  2. Definition • The realization and consideration of another wireless system in the shared environment of operation • Interoperability, in contrast Oren Eliezer, Texas Instruments

  3. A Measure of Coexistence • Reception Sensitivity Degradation in dB (additional dBs necessary to maintain the same reception quality in terms of BER or other link quality measure) • System Performance Degradation in throughput (in bits/second) • User perception of the damage is most important! Oren Eliezer, Texas Instruments

  4. Susceptibility to Interference • Different wireless applications have different sensitivities to interference (in terms of user perception of the link quality) • Various coexistence policies to suit the different needs Oren Eliezer, Texas Instruments

  5. Sources of Interference • Communication systems(in-band, out-of-band, etc.) • Non-communication systems(such as microwave ovens) Oren Eliezer, Texas Instruments

  6. Levels and Effects of RF Interference • Receiver front-end compression (saturation) • Blocking of the entire band or portions of it • 3rd order intermodulation • Single channel jamming • Collisions without interference or with manageable interference Oren Eliezer, Texas Instruments

  7. Coexistence Scenarios • At least 4 units are involved • Symmetrical Interference • Non-symmetrical Interference • Various system layouts are possible resulting in different interference scenarios Oren Eliezer, Texas Instruments

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