Results 51 to 60 of about 121,275 (163)

A Systematic Study of the Behaviour of PMEPR in Relation to OFDM Design Parameters [PDF]

open access: yes, 2011
The design of systems with enhanced quality of service (QoS) and improved power efficiency has evolved into an intensive research area in wired and wireless communications engineering.
Alinier, Nandini   +3 more
core  

Improved N-continuous OFDM for 5G Wireless Communications [PDF]

open access: yesarXiv, 2016
N-continuous orthogonal frequency division multiplexing (NC-OFDM) is a promising technique to obtain significant sidelobe suppression for baseband OFDM signals, in future 5G wireless communications. However, the precoder of NC-OFDM usually causes severe interference and high complexity.
arxiv  

Performance Analysis for Reconfigurable Intelligent Surface‐Aided Cache‐Enabled Wireless Networks

open access: yesIET Communications, Volume 19, Issue 1, January/December 2025.
We consider a downlink RIS‐aided, cache‐enabled network from Figure 1, and we have investigated and analysed the performance of RIS‐aided cache‐enabled wireless communication system. ABSTRACT Locally caching at base stations (BSs) can increase the network capacity as well as reduce the backhaul burden.
Jinbo Liu, Shaohui Sun
wiley   +1 more source

Performance Analysis of Non-DC-Biased OFDM [PDF]

open access: yesarXiv, 2019
The performance analysis of a novel optical modulation scheme is presented in this paper. The basic concept is to transmit signs of modulated optical orthogonal frequency division multiplexing (O-OFDM) symbols and absolute values of the symbols separately by two information carrying units: 1) indices of two light emitting diodes (LED) transmitters that
arxiv  

Quantization Effects in OFDM Systems [PDF]

open access: yes, 2008
The advantage of using orthogonal frequency division multiplexing (OFDM) over the single-carrier modulation is its ability to mitigate interference and fading without complex equalization filters in the receiver.
Shao, X., Slump, C.H.
core   +2 more sources

Coherent Optical DFT-Spread OFDM

open access: yes, 2011
We consider application of the discrete Fourier transform-spread orthogonal frequency-division multiplexing (DFT-spread OFDM) technique to high-speed fiber optic communications.
Wang, Fanggang, Wang, Xiaodong
core   +2 more sources

Secure OFDM System Design and Capacity Analysis under Disguised Jamming [PDF]

open access: yesarXiv, 2018
In this paper, we propose a securely precoded OFDM (SP-OFDM) system for efficient and reliable transmission under disguised jamming, where the jammer intentionally misleads the receiver by mimicking the characteristics of the authorized signal, and causes complete communication failure.
arxiv  

Direct vs. Two-Step Approach for Unique Word Generation in UW-OFDM [PDF]

open access: yesProceedings of the 15th International OFDM Workshop, Hamburg, 2010, 2010
Unique word OFDM is a novel technique for constructing OFDM symbols, that has many advantages over cyclic prefix OFDM. In this paper we investigate two different approaches for the generation of an OFDM symbol containing a unique word in its time domain representation.
arxiv  

Intelligent OFDM telecommunication system. Part 3. Anti-eavesdropping and anti-jamming properties of system, based on many-parameter wavelet and Golay transforms [PDF]

open access: yes, 2019
In this paper, we aim to investigate the superiority and practicability of many-parameter Fourier transforms (MPFT) from the physical layer security (PHY-LS) perspective.
Chasovskikh, V. P.   +4 more
core  

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