TY - GEN
T1 - Simple antenna pattern switching and interference-induced multi-hop transmissions for cognitive radio networks
AU - Di Taranto, Rocco
AU - Nishimori, Kentaro
AU - Popovski, Petar
AU - Yomo, Hiroyuki
AU - Takatori, Yasushi
AU - Prasad, Ramjee
AU - Kubota, Shuji
PY - 2007/1/1
Y1 - 2007/1/1
N2 - This paper proposes a simple antenna switching and a relay technique for cognitive radios using adaptive array antenna to effectively reduce the interference from the primary system. While the adaptive array antenna can create null towards the direction of primary system, the created antenna pattern can result in non-optimized pattern between cognitive nodes. In order to solve such a problem, this paper first introduces a simple antenna pattern switching. With this technique, each cognitive radio node is equipped with three antennas and each node tries to select the antenna configuration resulting in the best antenna pattern for each link. Furthermore, we propose a combination between the above simple antenna switching and the interference-induced multi-hop transmission where the multi-hop transmission is utilized when a link in the network suffers from the low transmission quality due to the created antenna pattern. Our numerical results show that the proposed techniques can significantly improve the achievable data rate in cognitive networks.
AB - This paper proposes a simple antenna switching and a relay technique for cognitive radios using adaptive array antenna to effectively reduce the interference from the primary system. While the adaptive array antenna can create null towards the direction of primary system, the created antenna pattern can result in non-optimized pattern between cognitive nodes. In order to solve such a problem, this paper first introduces a simple antenna pattern switching. With this technique, each cognitive radio node is equipped with three antennas and each node tries to select the antenna configuration resulting in the best antenna pattern for each link. Furthermore, we propose a combination between the above simple antenna switching and the interference-induced multi-hop transmission where the multi-hop transmission is utilized when a link in the network suffers from the low transmission quality due to the created antenna pattern. Our numerical results show that the proposed techniques can significantly improve the achievable data rate in cognitive networks.
KW - Adaptive array
KW - Antenna pattern switching
KW - Cognitive radio
KW - Interference cancellation
KW - Multi-hop communication
UR - http://www.scopus.com/inward/record.url?scp=34548741852&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34548741852&partnerID=8YFLogxK
U2 - 10.1109/DYSPAN.2007.77
DO - 10.1109/DYSPAN.2007.77
M3 - Conference contribution
AN - SCOPUS:34548741852
SN - 1424406633
SN - 9781424406630
T3 - 2007 2nd IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks
SP - 543
EP - 546
BT - 2007 2nd IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks
PB - IEEE Computer Society
T2 - 2nd IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, DySpan 2007
Y2 - 17 April 2007 through 20 April 2007
ER -