# Throughput Analysis for Wavelet OFDM in Broadband Power Line Communications

## TL;DR

This paper analyzes wavelet OFDM, based on Extended Lapped Transform, as a promising alternative for broadband power line communications, providing theoretical expressions and simulations that demonstrate its potential to enhance data rates in hostile PLC scenarios.

## Contribution

It offers the first theoretical analysis of ELT-MCM wavelet OFDM's signal and interference powers, showing its viability for improved data transmission in power line networks.

## Key findings

- ELT-MCM wavelet OFDM can improve data rates in PLC networks.
- Theoretical expressions for signal, ISI, ICI, and noise powers are derived.
- Simulations confirm the efficiency of ELT-MCM as an alternative modulation scheme.

## Abstract

Windowed orthogonal frequency-division multiplexing (OFDM) and wavelet OFDM have been proposed as medium access techniques for broadband communications over the power line network by the standard IEEE 1901. Windowed OFDM has been extensively researched and employed in different fields of communication, while wavelet OFDM, which has been recently recommended for the first time in a standard, has received less attention. This work is aimed to show that wavelet OFDM, which basically is an Extended Lapped Transform-based multicarrier modulation (ELT-MCM), is a viable and attractive alternative for data transmission in hostile scenarios, such as in-home PLC. To this end, we obtain theoretical expressions for ELT-MCM of: 1) the useful signal power, 2) the inter-symbol interference (ISI) power, 3) the inter-carrier interference (ICI) power, and 4) the noise power at the receiver side. The system capacity and the achievable throughput are derived from these. This study includes several computer simulations that show that ELT-MCM is an efficient alternative to improve data rates in PLC networks.