Abstract
A cognitive radio (CR) tries to intelligently utilise the idle periods of the primary system (PS) for opportunistic transmission and can improve the overall spectral utilisation. When a signal is transmitted, the authors usually consider the spectral occupancy from all propagation directions and assume circular signal coverage. In this study, they derive the relationship between transmission rate and signal-to-interference ratio statistics in a CR network (CRN) while protecting the rate of the PS to a specified level. Applying this relationship to a CR, they show that the regions for a CR receiver to keep an outage probability and bit error rate, defined as permissible areas, are no longer concentric in shape even in a pure path loss channel. Through detecting which permissible area a CR receiver is located, a new cognitive cycle is developed for rate enhancement. Simulation results show that as compared with a distance-dependent rate-adaptation approach, the system sumrate increases significantly. These results suggest a new version of CRN with enhanced system capacity.
| Original language | English |
|---|---|
| Pages (from-to) | 2044-2053 |
| Number of pages | 10 |
| Journal | IET Communications |
| Volume | 7 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - 2013 Dec 16 |
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All Science Journal Classification (ASJC) codes
- Computer Science Applications
- Electrical and Electronic Engineering
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Rate enhancement for cognitive radios using the relationship between transmission rate and signal-to-interference ratio statistics. / Shiung, David; Yang, Ya Yin.
In: IET Communications, Vol. 7, No. 18, 16.12.2013, p. 2044-2053.Research output: Contribution to journal › Article
TY - JOUR
T1 - Rate enhancement for cognitive radios using the relationship between transmission rate and signal-to-interference ratio statistics
AU - Shiung, David
AU - Yang, Ya Yin
PY - 2013/12/16
Y1 - 2013/12/16
N2 - A cognitive radio (CR) tries to intelligently utilise the idle periods of the primary system (PS) for opportunistic transmission and can improve the overall spectral utilisation. When a signal is transmitted, the authors usually consider the spectral occupancy from all propagation directions and assume circular signal coverage. In this study, they derive the relationship between transmission rate and signal-to-interference ratio statistics in a CR network (CRN) while protecting the rate of the PS to a specified level. Applying this relationship to a CR, they show that the regions for a CR receiver to keep an outage probability and bit error rate, defined as permissible areas, are no longer concentric in shape even in a pure path loss channel. Through detecting which permissible area a CR receiver is located, a new cognitive cycle is developed for rate enhancement. Simulation results show that as compared with a distance-dependent rate-adaptation approach, the system sumrate increases significantly. These results suggest a new version of CRN with enhanced system capacity.
AB - A cognitive radio (CR) tries to intelligently utilise the idle periods of the primary system (PS) for opportunistic transmission and can improve the overall spectral utilisation. When a signal is transmitted, the authors usually consider the spectral occupancy from all propagation directions and assume circular signal coverage. In this study, they derive the relationship between transmission rate and signal-to-interference ratio statistics in a CR network (CRN) while protecting the rate of the PS to a specified level. Applying this relationship to a CR, they show that the regions for a CR receiver to keep an outage probability and bit error rate, defined as permissible areas, are no longer concentric in shape even in a pure path loss channel. Through detecting which permissible area a CR receiver is located, a new cognitive cycle is developed for rate enhancement. Simulation results show that as compared with a distance-dependent rate-adaptation approach, the system sumrate increases significantly. These results suggest a new version of CRN with enhanced system capacity.
UR - http://www.scopus.com/inward/record.url?scp=84890025498&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84890025498&partnerID=8YFLogxK
U2 - 10.1049/iet-com.2013.0047
DO - 10.1049/iet-com.2013.0047
M3 - Article
AN - SCOPUS:84890025498
VL - 7
SP - 2044
EP - 2053
JO - IET Communications
JF - IET Communications
SN - 1751-8628
IS - 18
ER -