TY - GEN
T1 - Cognitive interference-mitigation technique for hybrid DS-multiband-UWB multiple access system
AU - Sum, Chin Sean
AU - Rahman, Mohammad Azizur
AU - Sasaki, Shigenobu
AU - Harada, Hiroshi
AU - Kato, Shuzo
PY - 2008/9/9
Y1 - 2008/9/9
N2 - This paper proposes a cognitive interference-mitigation technique for a hybrid direct sequence (DS) multiband (MB) ultra wideband (UWB) system. Theoretical framework of the DS-MB-UWB multiple access system employing cognitive interference-detection and mitigation is constructed over multipath environment in the presence of a coexisting narrowband wireless system. Interference mitigation is achieved through partially suppressing the power of the particular sub-band coexisting with the narrowband signal. A typical error performance improvement of around 10 fold can be achieved by suppressing 75% power of the affected sub-band. Additionally, increasing the number of sub- bands is found to achieve more improvement than increasing the number of DS chips. This paper attempts to develop a cognitive mitigation technology able to obtain optimum performance improvement while maintaining the highest possible frequency diversity.
AB - This paper proposes a cognitive interference-mitigation technique for a hybrid direct sequence (DS) multiband (MB) ultra wideband (UWB) system. Theoretical framework of the DS-MB-UWB multiple access system employing cognitive interference-detection and mitigation is constructed over multipath environment in the presence of a coexisting narrowband wireless system. Interference mitigation is achieved through partially suppressing the power of the particular sub-band coexisting with the narrowband signal. A typical error performance improvement of around 10 fold can be achieved by suppressing 75% power of the affected sub-band. Additionally, increasing the number of sub- bands is found to achieve more improvement than increasing the number of DS chips. This paper attempts to develop a cognitive mitigation technology able to obtain optimum performance improvement while maintaining the highest possible frequency diversity.
KW - Cognitive interference mitigation
KW - DS-multiband-UWB
KW - Multipath
KW - Multiple access
UR - http://www.scopus.com/inward/record.url?scp=50949128667&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=50949128667&partnerID=8YFLogxK
U2 - 10.1109/RWS.2008.4463439
DO - 10.1109/RWS.2008.4463439
M3 - Conference contribution
AN - SCOPUS:50949128667
SN - 1424414636
SN - 9781424414635
T3 - 2008 IEEE Radio and Wireless Symposium, RWS
SP - 105
EP - 108
BT - 2008 IEEE Radio and Wireless Symposium, RWS
T2 - 2008 IEEE Radio and Wireless Symposium, RWS
Y2 - 22 January 2008 through 24 January 2008
ER -