HYBRID SPECTRUM SHARING WITH IMPERFECT SENSING IN FADING CHANNELS
Refereed conference paper presented and published in conference proceedings


Full Text

Times Cited
Web of Science1WOS source URL (as at 20/11/2020) Click here for the latest count

Other information
AbstractThis paper considers the hybrid spectrum sharing paradigm where a cognitive radio system first performs spectrum sensing to identify primary users' (PU) status (idle/busy) and then adapts its transmit power according to sensing outcomes. To maximize ergodic throughput in fading environments, joint sensing and power allocation has to be considered. However, existing studies determine the optimal sensing time based on instantaneous channel state information (CSI) at each time slot, which imposes a stringent requirement in practice. In this paper, we obtained a statistical CSI-based optimal sensing time by exploring the ergodic rates of both overlay and underlay access in Rayleigh fading environments. Simulation results validate the derived analytic expressions, showing that significantly higher maximum throughput can be achieved by hybrid access compared with conventional overlay access.
All Author(s) ListZhang YL, Ching PC, Zhang QY
Name of ConferenceIEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
Start Date of Conference26/05/2013
End Date of Conference31/05/2013
Place of ConferenceVancouver
Country/Region of ConferenceCanada
Detailed descriptionorganized by IEEE Signal Processing Society,
Year2013
Month1
Day1
PublisherIEEE
Pages5318 - 5322
eISBN978-1-4799-0356-6
ISSN1520-6149
LanguagesEnglish-United Kingdom
KeywordsCognitive radio; ergodic throughput; hybrid spectrum sharing; power allocation; spectrum sensing
Web of Science Subject CategoriesAcoustics; Engineering; Engineering, Electrical & Electronic

Last updated on 2020-20-11 at 23:52