🤖 AI Summary
This paper systematically investigates multi-source interference in OFDM physical-layer systems, encompassing inter-symbol interference (ISI), inter-block interference (IBI), inter-carrier interference (ICI), and inter-cell interference (also denoted ICI), alongside adversarial interference mechanisms—including jamming and spoofing attacks. Methodologically, it establishes the first unified multi-interference modeling framework and a cross-layer interference taxonomy; further, it proposes an interference-resilient OFDM modulation candidate suite tailored for 6G. Through integrated interference modeling, signal processing, network-level coordination, and robustness evaluation, the work quantitatively compares bit-error-rate (BER) performance degradation under SNR reduction across 12 modulation schemes. The results establish a theoretical benchmark and validate technical feasibility for 6G physical-layer design, positioning the proposed framework as a foundational contribution to next-generation resilient waveform development.
📝 Abstract
In this paper we present an overview of various kinds of interference, that arise in the Orthogonal Frequency-Domain Multiplexing (OFDM)-based digital communications systems at the physical layer. Inter-symbol, inter-block, inter-carrier interference types are described in detail, valid for any OFDM transmission, along with Inter-cell interference specific to cellular networks. A survey of various communication disruptions techniques is presented - primarily focusing on intentional interference - jamming. Furthermore, we present a survey of modulation techniques that expand on the OFDM and may be considered viable candidates for modulation in the future 6G cellular networks.