CP Optimization for Multi-numerologies F-OFDM in MIMO System

Yang, Meijie; Chen, Yueyun; Lou, Yuan; Du, Liping; Liu, Zushen

doi:10.1109/wocc.2019.8770665

Cited by 1 publication

(2 citation statements)

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“…As it is commonplace in 5G networks to use some kind of filtering, the critical point is to determine the optimal type of filtering or the process of how filtering works [1], [5], and [6]. Usually in conventional OFDM networks majority of the interference problems arise due to the nonexistence of any band separation, which is why F-OFDM was proposed at the first place [2], [7]. Because each sub-bands in F-OFDM has different bandwidth, systems that are opting for F-OFDM instead of general OFDM can use different CP lengths and also different sub-band modulation scheme which is immensely useful for rapid varying traffic [7].…”

Section: Introductionmentioning

confidence: 99%

“…Usually in conventional OFDM networks majority of the interference problems arise due to the nonexistence of any band separation, which is why F-OFDM was proposed at the first place [2], [7]. Because each sub-bands in F-OFDM has different bandwidth, systems that are opting for F-OFDM instead of general OFDM can use different CP lengths and also different sub-band modulation scheme which is immensely useful for rapid varying traffic [7]. With combination of these kind of sub-band flexibility and subcarrier spacing, very flexible structure of subframe can be created that is able to carry various types of service data within the same subframe.…”

Section: Introductionmentioning

confidence: 99%

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An adaptive channel estimation scheme based on redundancy minimization for filtered OFDM networks

Hasan

Motakabber²,

Habaebi³

et al. 2023

TELKOMNIKA

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Filtered orthogonal frequency division multiplexing (F-OFDM), a technology which is being considered as a promising platform for beyond 4G era is expected to help deliver the new features at millimeter wave in the new 5 th generation of cellular communication. Some of its key features notably better spectral utilization, enhanced throughput and immunity to interference can be enabling for the new cellular standards. These features of filtered OFDM comes with strict requirements of filter design, guard tone managements, and efficient channel state information harness. This paper is intended to propose an intuitive channel estimation scheme which will allow efficient acquisition of channel state information (CSI) through exploiting the redundant steps of the conventional pilot training-based algorithms and by also using an adaptive weight to expedite the minimization of the error between the estimated values and the actual values. Various simulations will follow to demonstrate the superiority of the scheme over traditional pilot-based algorithms and thus prove its utility in the current 5G cellular era.

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