Transmission latency and reliability trade-off in path-time coded cognitive radio ad hoc networks

Yi Chi Chen, I. Wei Lai, Kwang Cheng Chen, Wen Tsuen Chen, Chia Han Lee

研究成果: 雜誌貢獻會議論文同行評審

4 引文 斯高帕斯(Scopus)


Cognitive radio ad hoc network (CRAHN) is considered as a key technology to enhance the spectrum efficiency for diverse applications. However, due to the opportunistic links, the intrinsic randomness of the CRAHN makes the traditional precise control of the end-to-end transmission unscalable and generally infeasible. The recently-proposed virtual multiple-input multiple-output (MIMO) framework exploits the multipath routing to create the diversity at the network layer. With only local information and no feedback control channel, the path-time code (PTC) of the virtual MIMO system is able to efficiently provide the error resilient end-to-end transmission. In particular, while the transmission latency should be minimized, more attempts for accessing the opportunistic links can be made if a larger latency is allowed, which improves the error rate performance of the end-to-end transmission. By theoretically analyzing the error rate performance and erasure statistics, we propose a design guideline to determine the waiting period as the limit of the transmission latency. This designed waiting period not only preserves the diversity gained by the PTC but also provides a low transmission latency, resulting in a good balance of the reliability-latency trade-off of the end-to-end PTC transmission in CRAHNs.

頁(從 - 到)1084-1089
期刊Proceedings - IEEE Global Communications Conference, GLOBECOM
出版狀態已發佈 - 2014
事件2014 IEEE Global Communications Conference, GLOBECOM 2014 - Austin, 美国
持續時間: 2014 12月 82014 12月 12

ASJC Scopus subject areas

  • 人工智慧
  • 電腦網路與通信
  • 硬體和架構
  • 訊號處理


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