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

fYear

2009

fDate

3-5 April 2009

Firstpage

11

Lastpage

15

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Future Computer and Communication, 2009. ICFCC 2009. International Conference on

Conference_Location

Kuala Lumpar

Print_ISBN

978-0-7695-3591-3

Type

conf

DOI

10.1109/ICFCC.2009.22

Filename

5189733