Opportunistic Cooperative Channel Access in Distributed Wireless Networks With Decode-and-Forward Relays

被引：5

作者：

Zhang, Zhou ^{[1
]}

Zhou, Shuai ^{[1
]}

Jiang, Hai ^{[1
]}

Dong, Lei ^{[2
]}

机构：

[1] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 2V4, Canada

[2] Xidian Univ, State Key Lab Integrated Serv Network, Xian 710071, Peoples R China

来源：

IEEE COMMUNICATIONS LETTERS | 2015年 / 19卷 / 10期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Opportunistic transmission; optimal stopping; AD HOC COMMUNICATIONS;

D O I：

10.1109/LCOMM.2015.2458324

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

This letter studies distributed opportunistic channel access in a contention-based wireless network with decode-and-forward relays. If a source wins a contention, the channel state information in the first-hop channel is estimated, and a decision is made for the winner source to either give up the transmission opportunity and let all sources start a new contention, or transmit to the relay. Once the relay gets the traffic, it may have a sequence of probings of the second-hop channel. The optimal decision strategies for the two hops are derived in this letter. Simulation results show that our scheme is beneficial when second-hop channels have larger average signal-to-noise ratio.

引用

页码：1778 / 1781

页数：4

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