Optimal Bit and Power Loading for OFDM Systems with Average BER and Total Power Constraints

TL;DR

This paper introduces a joint bit and power loading algorithm for OFDM systems that maximizes throughput and minimizes power while satisfying BER and power constraints, outperforming previous methods.

Contribution

It presents a novel algorithm that jointly optimizes bit and power allocation in OFDM systems under average BER and total power constraints.

Findings

The proposed scheme achieves higher throughput than existing algorithms.

It effectively reduces transmitted power while maintaining target BER.

Simulation results confirm the algorithm's superiority in fading environments.

Abstract

In this paper, a novel joint bit and power loading algorithm is proposed for orthogonal frequency division multiplexing (OFDM) systems operating in fading environments. The algorithm jointly maximizes the throughput and minimizes the transmitted power, while guaranteeing a target average bit error rate (BER) and meeting a constraint on the total transmit power. Simulation results are described that illustrate the performance of the proposed scheme and demonstrate its superiority when compared to the algorithm in [1].