A STDMA throughput enhancement scheme with heuristic scheduling in cognitive radio wireless networks

Author

Deng, Ke ; Luo, Tao ; Cai, Ran ; Liu, Wei ; Li, Jianfeng

Author_Institution

Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2010

fDate

24-26 Sept. 2010

Firstpage

1

Lastpage

5

Abstract

This paper proposes a spatial time-division multiple access (STDMA) based scheme (STBS) to enhance the system throughput in cognitive radio wireless networks. Especially, the proposed scheme is suitable for the situation when the available number of channels is far less than the number of secondary users (SUs). The system design includes: 1) a novel criterion based on SINR constraint (SC) to determine the feasibility of spatial reuse of spectrum; 2) a heuristic spectrum allocation and scheduling (HSAS) algorithm. Simulation results show that in comparison with the STBS based on Interference range (IR) criterion proposed in [5], the proposed scheme can improve the system throughput as much as 100% when the number of channels is 1/5 of the number of users as well as guarantee a low outage ratio of system blow 2% in various scenarios.

Keywords

cognitive radio; radio networks; scheduling; space division multiple access; time division multiple access; wireless channels; SINR constraint; STDMA throughput enhancement scheme; cognitive radio wireless networks; heuristic scheduling; heuristic spectrum allocation and scheduling algorithm; interference range criterion; secondary users; spatial time-division multiple access based scheme; Cognitive radio; Interference; Power control; Resource management; Signal to noise ratio; Throughput; Wireless networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Network Infrastructure and Digital Content, 2010 2nd IEEE International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-6851-5

Type

conf

DOI

10.1109/ICNIDC.2010.5657889

Filename

5657889