Filtered-OFDM - Enabler for Flexible Waveform in The 5th Generation Cellular Networks
Xi Zhang, Ming Jia, Lei Chen, Jianglei Ma, Jing Qiu

TL;DR
This paper introduces filtered-OFDM (f-OFDM), a flexible waveform technique for 5G networks that improves spectrum efficiency by allowing different services to use tailored waveforms in separate subbands.
Contribution
The paper presents the design and advantages of f-OFDM, enabling diverse service requirements and demonstrating significant throughput gains over traditional OFDM in 5G.
Findings
f-OFDM achieves up to 46% throughput improvement.
Allows different waveforms for different services.
Enhances spectrum utilization in 5G networks.
Abstract
The underlying waveform has always been a shaping factor for each generation of the cellular networks, such as orthogonal frequency division multiplexing (OFDM) for the 4th generation cellular networks (4G). To meet the diversified and pronounced expectations upon the upcoming 5G cellular networks, here we present an enabler for flexible waveform configuration, named as filtered-OFDM (f-OFDM). With the conventional OFDM, a unified numerology is applied across the bandwidth provided, balancing among the channel characteristics and the service requirements, and the spectrum efficiency is limited by the compromise we made. In contrast, with f-OFDM, the assigned bandwidth is split up into several subbands, and different types of services are accommodated in different subbands with the most suitable waveform and numerology, leading to an improved spectrum utilization. After outlining the…
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Taxonomy
TopicsPAPR reduction in OFDM · Advanced Photonic Communication Systems · Power Line Communications and Noise
