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Preamble Format For 1 MHz Beamforming

Preamble Format For 1 MHz Beamforming. Authors:. Date: 2012-05-14. Abstract. This document proposes a preamble for the 1 MHz mode which supports Single-User Beamforming (SU-BF). . Background.

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Preamble Format For 1 MHz Beamforming

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  1. Preamble Format For 1 MHz Beamforming Authors: • Date:2012-05-14 Ron Murias, InterDigital Communications

  2. Abstract • This document proposes a preamble for the 1 MHz mode which supports Single-User Beamforming (SU-BF). Ron Murias, InterDigital Communications

  3. Background • Document 12/371r0 proposed adoption of the following transmit beamforming sections from IEEE P802.11ac™/D2.0: • 8.4.1.46 VHT MIMO Control field • 8.4.1.47 VHT Compressed Beamforming Report field - contents of feedback frame • 8.4.1.48 MU Exclusive Beamforming Report field - contents of MU frame  • 9.31.5 VHT sounding protocol • 22.3.11 and its subsections: SU-MIMO and MU-MIMO Beamforming • However, the 1 MHz mode has a different preamble and it is not clear how transmit beamforming will be supported. Ron Murias, InterDigital Communications

  4. Beamforming for 1 MHz • The 1 MHz mode will likely be used for low-cost sensor applications, where the STAs may have only one or two antennae. • Beamforming to low-cost sensor STAs is good method for increasing the rate/rangeas most of the complexity is at the AP. • The 1 MHz mode should include a minimal overhead preamble format which supports SU-BF. Ron Murias, InterDigital Communications

  5. Proposed Single User Preamble Format • Similar to long preamble format of the 2 MHz mode. • Supports beamforming for 1 MHZ Single-User case without added overhead of a SIG-B symbol. • Supports Beamforming without creating hidden nodes. Ron Murias, InterDigital Communications

  6. Conclusion/Recommendations • The current specification framework does not have a preamble mode for 1 MHz that supports SU-BF. • Adopting a preamble format that supports SU-BF would be very beneficial for 1 MHz systems. Ron Murias, InterDigital Communications

  7. Straw Poll • Do you think that a 1 MHz preamble mode that supports SU-BF should be specified? • Yes • No • Abstain Ron Murias, InterDigital Communications

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