Subcarrier Gain Based Power Allocation in Multicarrier Systems

The Orthogonal Frequency Division Multiplexing (OFDM) transmission is the optimum version of the multicarrier transmission scheme, which has the capability to achieve high data rate. The key issue of OFDM system is the allocation of bits and power over a number of subcarriers. In this paper, a new p...

Full description

Saved in:
Bibliographic Details
Published inJournal of Telecommunications and Information Technology no. 1
Main Authors Mohammed Abd-Elnaby, Germien G. Sedhom, Fathi E. Abd El-Samie, Nagy Wadie Messiha, Xu Zhu
Format Journal Article
LanguageEnglish
Published National Institute of Telecommunications 30.03.2014
Subjects
GPA
OFDM
QAM
SNR
Online AccessGet full text

Cover

More Information
Summary:The Orthogonal Frequency Division Multiplexing (OFDM) transmission is the optimum version of the multicarrier transmission scheme, which has the capability to achieve high data rate. The key issue of OFDM system is the allocation of bits and power over a number of subcarriers. In this paper, a new power allocation algorithm based on subcarrier gain is proposed to maximize the bit rate. For OFDM systems, the Subcarrier Gain Based Power Allocation (SGPA) algorithm is addressed and compared with the standard Greedy Power Allocation (GPA). The authors demonstrate by analysis and simulation that the proposed algorithm reduces the computational complexity and achieves a near optimal performance in maximizing the bit rate over a number of subcarrier.
ISSN:1509-4553
1899-8852
DOI:10.26636/jtit.2014.1.1009