Power allocation for balancing the effects of channel estimation error and pilot overhead in full-duplex decode-and-forward relaying

Mikko Vehkaperä, Taneli Riihonen, Risto Wichman, Baosheng Xu

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2 Citations (Scopus)

Abstract

This paper considers the transmit power balancing trade-off between the pilot and data signals in a two-hop full-duplex decode-and-forward relay link when the feedforward data channels are Rayleigh-fading and the residual feedback self-interference channel follows Rician-fading. The study concentrates on time-multiplexed orthogonal pilot sequences since simultaneously transmitted orthogonal pilots are disadvantageous for full-duplex relaying with self-interference. Average end-to-end achievable rate bounds are formulated first. Then the power allocation problem that can be solved only numerically in the general case is characterized. Finally, a simple suboptimal algorithm for power allocation is proposed. The numerical results illustrate that the proposed simple algorithm provides near optimal performance over a wide range of scenarios. The benefit of optimizing the power allocation is apparent across the range of values considered and it improves the achievable rate up to one bit per channel use compared to naive allocation schemes.
Original languageEnglish
Title of host publication17th IEEE International Workshop on Signal Processing Advances in Wireless Communications
Subtitle of host publicationSPAWC 2016
PublisherIEEE Institute of Electrical and Electronic Engineers
ISBN (Electronic)978-1-5090-1749-2
ISBN (Print)978-1-5090-1750-8
DOIs
Publication statusPublished - 9 Aug 2016
MoE publication typeA4 Article in a conference publication
Event17th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2016 - Edinburgh, United Kingdom
Duration: 3 Jul 20166 Jul 2016

Conference

Conference17th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2016
CountryUnited Kingdom
CityEdinburgh
Period3/07/166/07/16

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Keywords

  • Achievable rates
  • channel estimation
  • in-band full-duplex wireless
  • performance analysis
  • regenerative relaying
  • self-interference
  • transmit power optimization

Cite this

Vehkaperä, M., Riihonen, T., Wichman, R., & Xu, B. (2016). Power allocation for balancing the effects of channel estimation error and pilot overhead in full-duplex decode-and-forward relaying. In 17th IEEE International Workshop on Signal Processing Advances in Wireless Communications: SPAWC 2016 [7536809] IEEE Institute of Electrical and Electronic Engineers . https://doi.org/10.1109/SPAWC.2016.7536809