TY - GEN
T1 - System parameter selection for asymmetric underlay CDMA networks with interference-minimizing code assignment
AU - Kashef, Mohamed
AU - Abdallah, Mohamed
AU - Elezabi, Ayman
AU - Khairy, Mohamed
PY - 2009
Y1 - 2009
N2 - We propose a framework for designing an underlay secondary CDMA network. The objective is to select the secondary system's bit rate and spreading factor that improve the secondary network throughput given a required bit error rate and an allowable transmit power level acceptable to the primary network. The selection scheme is applied to both the case of random code assignment and an interference-minimizing code assignment (IMCA) scheme. Our simulations reveal that the parameter selection for the system with interference-minimizing code assignment scheme leads to higher system throughput over that achieved with random code assignment. We also show that the IMCA scheme, unlike random code assignment, suffers negligible interference from adjacent bands in asynchronous channels.
AB - We propose a framework for designing an underlay secondary CDMA network. The objective is to select the secondary system's bit rate and spreading factor that improve the secondary network throughput given a required bit error rate and an allowable transmit power level acceptable to the primary network. The selection scheme is applied to both the case of random code assignment and an interference-minimizing code assignment (IMCA) scheme. Our simulations reveal that the parameter selection for the system with interference-minimizing code assignment scheme leads to higher system throughput over that achieved with random code assignment. We also show that the IMCA scheme, unlike random code assignment, suffers negligible interference from adjacent bands in asynchronous channels.
KW - Cognitive radio
KW - Interference mitigation
KW - Underlay CDMA networks
UR - http://www.scopus.com/inward/record.url?scp=70449574241&partnerID=8YFLogxK
U2 - 10.1109/SPAWC.2009.5161880
DO - 10.1109/SPAWC.2009.5161880
M3 - Conference contribution
AN - SCOPUS:70449574241
SN - 9781424436965
T3 - IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
SP - 722
EP - 726
BT - 2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2009
T2 - 2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2009
Y2 - 21 June 2009 through 24 June 2009
ER -