Multiple Powers Allocation Strategy under Sensing/Transmission Frame Structure in Cognitive Radio Networks

DOI

10.2991/icwcsn-16.2017.48How to use a DOI?

Keywords

cognitive radio; power allocation; spectrum sensing; spectrum sharing; throughput maximization

Abstract

In the traditional opportunity spectrum access cognitive radio system(OSA), the state of the primary user is assumed to be constant during the entire frame duration, the secondary user accesses licensed band with proper power only when primary user is detected idle. In fact, the state of the primary user may changes at any time, on the premise of ensure that the quality of service of primary user and secondary user to make full use of the channel, we proposed a new power allocation strategy based on the four states and three power sunder sensing/transmission frame structure. In this strategy, secondary user is assigned to three different types of access power for the four kinds of states in the process of sensing, considering the effect of activity of the primary user to the system throughput, adopting frame structure that maximize the sensing period and the data transmission period at the same time, to avoid the sensing-throughput tradeoff, aiming to achieve the maximize throughput. The simulation results show that compared to the new power allocation strategy in this paper and conventional power allocation strategy, proposed strategy in this paper has obvious improvement for throughput. In addition, the proposed system throughput is associated with the target detection probability and the primary user's signal- to-noise ratio received at the secondary user.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Dao-Yuan Ren
AU  - Shou-Yi Yang
AU  - Fang Wang
AU  - Liu-Jie Ji
PY  - 2016/12
DA  - 2016/12
TI  - Multiple Powers Allocation Strategy under Sensing/Transmission Frame Structure in Cognitive Radio Networks
BT  - Proceedings of the 3rd International Conference on Wireless Communication and Sensor Networks (WCSN 2016)
PB  - Atlantis Press
SP  - 220
EP  - 226
SN  - 2352-538X
UR  - https://doi.org/10.2991/icwcsn-16.2017.48
DO  - 10.2991/icwcsn-16.2017.48
ID  - Ren2016/12
ER  -