Distributed Opportunistic Wireless Channel Access in Decode-and-Forward Relay Networks

• Author / Creator

  Zhou, Shuai

• The main goal of this thesis is to develop an opportunistic scheduling strategy in distributed networks with decode-and-forward (DF) relays without direct link. Two cases are considered: 1) the winner source has full CSI (CSI of source-relay link and relay-destination link), 2) the winner source has partial CSI (CSI of source-relay link only).
  For the first case, a pure threshold scheduling strategy is proposed. Specifically, only when the minimum of the detected signal-to-noise ratio (SNR) of the source-relay link and relay-destination link exceeds a certain threshold, it is optimal for the source to transmit data.
  For the second case, the scheduling strategy is also threshold-based. In specific, when the detected SNR of the source-relay link exceeds a certain threshold, it is optimal for the winner source to transmit data. After the relay receives the data, the optimal strategy is probing the second hop until the second-hop channel condition is good.

• Subjects / Keywords

  • Decode-and-forward relaying
  • Optimal stopping
  • Opportunistic transmission
  • Throughput maximization

• Graduation date

  Fall 2015

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R30C4SW86

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.