PAPR Analysis for Dual-Polarization FBMC

In a recent work we proposed a new radio access technique based on filter bank multi-carrier (FBMC) modulation using two orthogonal polarizations: dual-polarization FBMC (DP-FBMC). We showed that with good cross-polarization discrimination (XPD), DP-FBMC solves the intrinsic imaginary interference shortcoming of FBMC without extra processing. DP-FBMC also has other interesting advantages over cyclic prefix orthogonal frequency-division multiplexing (CP-OFDM) and FBMC such as more robustness in dispersive channels, and it is also more robust to receiver carrier frequency offset (CFO) and timing offset (TO). In this paper we analyze the peak to average power ratio (PAPR) of DP-FBMC and compare PAPR simulation results with that of conventional FBMC, for different prototype filters and overlapping factors. According to the analysis and results, with a proper choice of prototype filter, DP-FBMC has comparable PAPR to FBMC.Comment: This paper has been published in IEEE MILCOM Conference 2018. Some results has been changed from first versio

Dual-Polarization OFDM-OQAM Wireless Communication System

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.Comment: 1.This paper is accepted to be published in IEEE Vehicular Technology Conference (VTC) FALL 2018. 2.In this new submitted version authors have revised the paper based on the VTC FALL reviewers comments. Therefore some typos have fixed and some results have change

Relación entre la potencia RF y la separación de frecuencias para redes de acceso óptico convergente FBMC y LTE

Se transmitió conjuntamente una señal de datos FBMC y LTE en una sola longitud de onda dentro de una red de acceso óptico, la señal de FBMC se dejó en banda base y la señal LTE fue probada a distintas frecuencias hasta encontrar el valor óptimo determinado por el valor de EVM y BER, para mejorar el rendimiento del sistema se optimizó la potencia de RF en la señal de LTE, encontrándose un valor óptimo de potencia de transmisión de -18 dBm, con lo cual se consigue una mejora en el EVM de 4,2% en la señal de LTE y se obtiene la señal FBMC con una transmisión libre de errores. Los resultados muestran que con los puntos óptimos encontrados durante la transmisión de FBMC y LTE estas dos señales de datos pueden coexistir y ser empleados en una red de acceso óptico para reducir ancho de banda y prestar más servicios.A FBMC and LTE single wavelength data signal was transmitted together within an optical access network, the FBMC signal was left in the baseband and the LTE signal was tested at different frequencies until the optimal value determined by the EVM and BER value was found, to improve system performance, the RF power in the LTE signal was optimized, finding an optimal value of transmission power of -18 dBm, which achieves an improvement in the EVM of 4.2% in the LTE signal and the FBMC signal is obtained with an error free transmission. The results show that with the optimal points found during the transmission of FBMC and LTE these two data signals can coexist and be used in an optical access network to reduce bandwidth and provide more services