TY - GEN
T1 - Capacity maximized power allocation for secondary users in OFDM-Based cognitive networks
AU - Chengshi, Zhao
AU - Mingrui, Zou
AU - Bin, Shen
AU - Islam, S. M.Riazul
AU - Kyungsup, Kwak
AU - Shubin, Wang
AU - Zheng, Zhou
PY - 2008/12/8
Y1 - 2008/12/8
N2 - Cognitive Radio (CR) is widely considered as a novel approach to improve the utilization efficiency of precious radio spectrum resource. Orthogonal Frequency Division Multiplexing (OFDM) is one of the best candidates to realize cognitive networks because of its characteristic of agile frequency bands access. In this paper, a novel power allocation model for OFDM-based Cognitive Networks (CR) is presented. An water-filling algorithm is proposed to realize power and subcarrier allocation together with bit loading in OFDM-based CR networks; during power allocation, mutual interference between Primary User (PU) and Secondary User (SU) are comprehensively considered, which restrains the interference to PU together with maximizing the capacity of SU. Symbol Error Rate (SER), power consumption and coverage are considered as Quality of Service (QoS) parameters, and all of them can be ensured in the power allocation. By a simplified model, simulation result is exhibited to illuminate the influence of mutual interference on subcarrier and power allocation together with system capacity.
AB - Cognitive Radio (CR) is widely considered as a novel approach to improve the utilization efficiency of precious radio spectrum resource. Orthogonal Frequency Division Multiplexing (OFDM) is one of the best candidates to realize cognitive networks because of its characteristic of agile frequency bands access. In this paper, a novel power allocation model for OFDM-based Cognitive Networks (CR) is presented. An water-filling algorithm is proposed to realize power and subcarrier allocation together with bit loading in OFDM-based CR networks; during power allocation, mutual interference between Primary User (PU) and Secondary User (SU) are comprehensively considered, which restrains the interference to PU together with maximizing the capacity of SU. Symbol Error Rate (SER), power consumption and coverage are considered as Quality of Service (QoS) parameters, and all of them can be ensured in the power allocation. By a simplified model, simulation result is exhibited to illuminate the influence of mutual interference on subcarrier and power allocation together with system capacity.
UR - https://www.scopus.com/pages/publications/67549119705
U2 - 10.1109/ISCIT.2008.4700164
DO - 10.1109/ISCIT.2008.4700164
M3 - Published conference contribution
AN - SCOPUS:67549119705
SN - 9781424423361
T3 - 2008 International Symposium on Communications and Information Technologies, ISCIT 2008
SP - 110
EP - 115
BT - 2008 International Symposium on Communications and Information Technologies, ISCIT 2008
T2 - 2008 International Symposium on Communications and Information Technologies, ISCIT 2008
Y2 - 21 October 2008 through 23 October 2008
ER -