Overview and Performance Analysis of Various Waveforms in High Mobility Scenarios

02/28/2023
by   Yu Zhou, et al.
0

In the high-mobility scenarios of next-generation wireless communication systems (beyond 5G/6G), the performance of orthogonal frequency division multiplexing (OFDM) deteriorates drastically due to the loss of orthogonality between the subcarriers caused by large Doppler frequency shifts. Various emerging waveforms have been proposed for fast time-varying channels with excellent results. In this paper, we classify these waveforms from the perspective of their modulation domain and establish a unified framework to provide a comprehensive system structure comparison. Then we analyze bit error rate (BER) performance of each waveform in doubly selective channels. Through the discussions on their complexity and compatibility with OFDM systems, we finally give the candidate waveform suggestions.

READ FULL TEXT
research
04/22/2021

AFDM: A Full Diversity Next Generation Waveform for High Mobility Communications

We present Affine Frequency Division Multiplexing (AFDM), a new chirp-ba...
research
10/25/2020

Performance Analysis of Coded OTFS Systems over High-Mobility Channels

Orthogonal time frequency space (OTFS) modulation is a recently develope...
research
10/07/2020

Orthogonal Time-Frequency Space Modulation: A Full-Diversity Next Generation Waveform

The sixth-generation (6G) wireless networks are envisioned to provide a ...
research
07/22/2022

Delay-Doppler Reversal for OTFS System in Doubly-selective Fading Channels

The recent proposed orthogonal time frequency space (OTFS) modulation sh...
research
03/03/2020

OTFS Based Receiver Scheme With Multi-Antennas in High-Mobility V2X Systems

Vehicle-to-everything (V2X) is considered as one of the most important a...
research
11/30/2020

Message Passing Based Structured Sparse Signal Recovery for Estimation of OTFS Channels with Fractional Doppler Shifts

The orthogonal time frequency space (OTFS) modulation has emerged as a p...

Please sign up or login with your details

Forgot password? Click here to reset