TY - GEN
T1 - Enhanced greedy algorithm based dynamic subcarrier allocation for single carrier FDMA systems
AU - Nwamadi, Obilor
AU - Zhu, Xu
AU - Nandi, Asoke K.
PY - 2009
Y1 - 2009
N2 - In this paper we propose an enhanced greedy dynamic subcarrier allocation algorithm for Single Carrier Frequency Division Multiple Access (SC-FDMA) systems. This so called mean-enhanced greedy algorithm allocates subcarriers in a greedy fashion, based on the information of the users' subcarriers mean gains. We show through simulation results that the proposed algorithm outperforms the conventional greedy algorithm. It also outperforms the benchmark Hungarian algorithms in terms of Bit Error Rate (BER) with a lower computational complexity. Furthermore, the proposed algorithm is generic and can be easily extended for Orthogonal Frequency Division Multiple Access (OFDMA). We compare the performance of SCFDMA and OFDMA, and point out that for a high number of users, there is no frequency diversity gain of SC-FDMA over OFDMA as both systems demonstrate benefit from multiuser diversity.
AB - In this paper we propose an enhanced greedy dynamic subcarrier allocation algorithm for Single Carrier Frequency Division Multiple Access (SC-FDMA) systems. This so called mean-enhanced greedy algorithm allocates subcarriers in a greedy fashion, based on the information of the users' subcarriers mean gains. We show through simulation results that the proposed algorithm outperforms the conventional greedy algorithm. It also outperforms the benchmark Hungarian algorithms in terms of Bit Error Rate (BER) with a lower computational complexity. Furthermore, the proposed algorithm is generic and can be easily extended for Orthogonal Frequency Division Multiple Access (OFDMA). We compare the performance of SCFDMA and OFDMA, and point out that for a high number of users, there is no frequency diversity gain of SC-FDMA over OFDMA as both systems demonstrate benefit from multiuser diversity.
UR - https://www.scopus.com/pages/publications/70349167413
U2 - 10.1109/WCNC.2009.4917713
DO - 10.1109/WCNC.2009.4917713
M3 - 会议稿件
AN - SCOPUS:70349167413
SN - 9781424429486
T3 - IEEE Wireless Communications and Networking Conference, WCNC
BT - 2009 IEEE Wireless Communications and Networking Conference, WCNC 2009 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2009 IEEE Wireless Communications and Networking Conference, WCNC 2009
Y2 - 5 April 2009 through 8 April 2009
ER -