Abstract
Wireless communications are prone to both unintentional and intentional RF interference. Such interference has significant impact on the reliability of packet transmissions. In this paper, we consider interference mitigation in frequency hopping (FH) systems. We employ cognitive radios (CRs) for proactive interference sensing in such systems. Through this proactive approach, we propose a scheme for dynamic adjustment of the FH sequence. Our protocol, called SSDFH, relies on exploiting the spectrum sensing capabilities of CRs for proactive detection of channel quality. We analyze the characteristics of the proposed SSDFH using a continuous-time Markov chain framework. Level crossing rate (LCR) analysis is used to determine the transition rates for the Markov chain, which are then used to measure the 'channel stability,' a metric that reflects the freshness of sensed channel interference. The selection of different protocol parameters is studied by means of analysis. In particular, we provide a numerical procedure for determining the 'optimal' total sensing time that minimizes the probability of 'black holes.' We run simulations to study the performance of our proposed protocol.
| Original language | English (US) |
|---|---|
| Title of host publication | IEEE International Conference on Communications |
| Pages | 4421-4425 |
| Number of pages | 5 |
| DOIs | |
| State | Published - 2012 |
| Event | 2012 IEEE International Conference on Communications, ICC 2012 - Ottawa, ON, Canada Duration: Jun 10 2012 → Jun 15 2012 |
Other
| Other | 2012 IEEE International Conference on Communications, ICC 2012 |
|---|---|
| Country | Canada |
| City | Ottawa, ON |
| Period | 6/10/12 → 6/15/12 |
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Keywords
- cognitive radio
- continuous-time Markov chains
- dynamic frequency hopping
- Spectrum sensing
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Computer Networks and Communications
Cite this
Interference mitigation using spectrum sensing and dynamic frequency hopping. / Rahman, Mohammad J Abdel; Krunz, Marwan M; Erwin, Richard.
IEEE International Conference on Communications. 2012. p. 4421-4425 6363744.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Interference mitigation using spectrum sensing and dynamic frequency hopping
AU - Rahman, Mohammad J Abdel
AU - Krunz, Marwan M
AU - Erwin, Richard
PY - 2012
Y1 - 2012
N2 - Wireless communications are prone to both unintentional and intentional RF interference. Such interference has significant impact on the reliability of packet transmissions. In this paper, we consider interference mitigation in frequency hopping (FH) systems. We employ cognitive radios (CRs) for proactive interference sensing in such systems. Through this proactive approach, we propose a scheme for dynamic adjustment of the FH sequence. Our protocol, called SSDFH, relies on exploiting the spectrum sensing capabilities of CRs for proactive detection of channel quality. We analyze the characteristics of the proposed SSDFH using a continuous-time Markov chain framework. Level crossing rate (LCR) analysis is used to determine the transition rates for the Markov chain, which are then used to measure the 'channel stability,' a metric that reflects the freshness of sensed channel interference. The selection of different protocol parameters is studied by means of analysis. In particular, we provide a numerical procedure for determining the 'optimal' total sensing time that minimizes the probability of 'black holes.' We run simulations to study the performance of our proposed protocol.
AB - Wireless communications are prone to both unintentional and intentional RF interference. Such interference has significant impact on the reliability of packet transmissions. In this paper, we consider interference mitigation in frequency hopping (FH) systems. We employ cognitive radios (CRs) for proactive interference sensing in such systems. Through this proactive approach, we propose a scheme for dynamic adjustment of the FH sequence. Our protocol, called SSDFH, relies on exploiting the spectrum sensing capabilities of CRs for proactive detection of channel quality. We analyze the characteristics of the proposed SSDFH using a continuous-time Markov chain framework. Level crossing rate (LCR) analysis is used to determine the transition rates for the Markov chain, which are then used to measure the 'channel stability,' a metric that reflects the freshness of sensed channel interference. The selection of different protocol parameters is studied by means of analysis. In particular, we provide a numerical procedure for determining the 'optimal' total sensing time that minimizes the probability of 'black holes.' We run simulations to study the performance of our proposed protocol.
KW - cognitive radio
KW - continuous-time Markov chains
KW - dynamic frequency hopping
KW - Spectrum sensing
UR - http://www.scopus.com/inward/record.url?scp=84872004439&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84872004439&partnerID=8YFLogxK
U2 - 10.1109/ICC.2012.6363744
DO - 10.1109/ICC.2012.6363744
M3 - Conference contribution
SN - 9781457720529
SP - 4421
EP - 4425
BT - IEEE International Conference on Communications
ER -