The Subchannel Inversion for Power Allocation in Multicarrier OFDM Systems

The problem of power loading that have been research in Orthogonal Frequency Division Multiplexing (OFDM) Systems. In this paper, we propose the proportion of power allocation method of sub carriers selection in a multiplex sub carrier power restrictive environment for Orthogonal Frequency Division Multiplexing (OFDM) systems. A sub channel inversion for allocation of transmission power is proposed to reduce the bit error rate and increase system efficiency. From the simulation, our proposed sub carriers power allocation scheme can achieve better performance in bit error rate (BER).