Title :
A Novel Algorithm with a New Adaptive Modulation Form to Improve the Performance of OFDM for 4G Systems
Author :
Al-kebsi, Ibrahim Ismail ; Ismail, Mahamod ; Jumari, Kasmiran ; Rahman, T.A. ; El-Saleh, Ayman A.
Author_Institution :
Dept. of Electr., Electron. & Syst. Eng., Univ. Kebangsaan Malaysia, Bangi, Malaysia
Abstract :
This paper tries to present a new form of adaptive modulation which has the ability of using the high order modulation schemes such as 256-QAM and 128-QAM at low SNR values such as 2, 4 and 8 dB in order to enhance the data rate without degrading the SER performance especially at low SNR values. This new form of adaptive modulation is combined together with the power control and the PAPR clipping technique to produce a novel algorithm. This algorithm is called MPC (adaptive Modulation, Power control and Clipping), which not aim only to reduce the PAPR, but to enhance the data rate of OFDM signals for 4G systems.
Keywords :
4G mobile communication; OFDM modulation; adaptive modulation; power control; quadrature amplitude modulation; 4G systems; OFDM; QAM; adaptive modulation form; power control; Adaptive control; Data engineering; High performance computing; OFDM modulation; Peak to average power ratio; Power control; Programmable control; Systems engineering and theory; Turing machines; Wireless communication; Adaptive modulation; CCDF; MPC; PAPR; clipping; power control;
Conference_Titel :
Future Computer and Communication, 2009. ICFCC 2009. International Conference on
Conference_Location :
Kuala Lumpar
Print_ISBN :
978-0-7695-3591-3
DOI :
10.1109/ICFCC.2009.22
