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Maximized achievable rate of SINR‐measurement‐based spectrum sharing with binary feedback
Author(s) -
Wang Hanho,
Ko Kyunbyoung,
Woo Choongchae
Publication year - 2012
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.1269
Subject(s) - computer science , transmitter , signal to interference plus noise ratio , interference (communication) , signal to noise ratio (imaging) , channel (broadcasting) , constraint (computer aided design) , binary number , telecommunications , computer network , mathematics , physics , power (physics) , geometry , arithmetic , quantum mechanics
SUMMARY Motivated by the difficulty in measuring channel state information between heterogeneous primary and secondary systems, we propose a signal‐to‐interference‐noise ratio (SINR)‐based spectrum sharing policy. In the proposed spectrum sharing policy, a secondary user who does not cause SINR outage at the primary receiver is admitted to share the primary user's spectrum. In this article, we analyze the achievable rate of a secondary user and for whom the achievable rate is maximized in the SINR‐constrained spectrum sharing. The maximized achievable rate is determined by the ratio of the distance between the secondary transmitter and the primary receiver to the distance between the secondary transmitter and receiver, and it is proportional to the distance ratio. In conclusion, secondary links with large distance ratio can support high data rate applications so long as SINR constraint of the primary user is guaranteed. Copyright © 2011 John Wiley & Sons, Ltd.