Dual-Polarization OFDM-OQAM Wireless Communication System

TL;DR

This paper introduces dual-polarization FBMC (DP-FBMC), a wireless communication technique that mitigates interference and enhances robustness, enabling advanced MIMO processing without additional complexity, promising improved performance in multipath channels.

Contribution

The paper proposes a novel DP-FBMC system that alleviates FBMC interference and matches the complexity of conventional systems, with three multiplexing structures and superior performance in simulations.

Findings

DP-FBMC reduces intrinsic interference in FBMC systems.

DP-FBMC shows improved BER performance in dispersive channels.

One structure of DP-FBMC has complexity similar to conventional FBMC.

Abstract

In this paper we describe the overall idea and results of a recently proposed radio access technique based on filter bank multicarrier (FBMC) communication system using two orthogonal polarizations: dual-polarization FBMC (DP-FBMC). Using this system we can alleviate the intrinsic interference problem in FBMC systems. This enables use of all the multicarrier techniques used in cyclic-prefix orthogonal frequency-division multiplexing (CP-OFDM) systems for channel equalization, multiple-input/multiple-output (MIMO) processing, etc., without using the extra processing required for conventional FBMC. DP-FBMC also provides other interesting advantages over CP-OFDM and FBMC such as more robustness in multipath fading channels, and more robustness to receiver carrier frequency offset (CFO) and timing offset (TO). For DP-FBMC we propose three different structures based on different multiplexing techniques in time, frequency, and polarization. We will show that one of these structures has exactly the same system complexity and equipment as conventional FBMC. In our simulation results DP-FBMC has better bit error ratio (BER) performance in dispersive channels. Based on these results, DP-FBMC has potential as a promising candidate for future wireless communication systems.