Results 51 to 60 of about 1,184 (161)
Journal of Electrical and Computer Engineering, Volume 2018, Issue 1, 2018., 2018 A data clipping and normalization technique is employed to improve the performance of the overall direct detection optical orthogonal frequency division multiplexing (DCO‐OFDM) system. A detailed analysis of clipping distortion introduced by digital clipping and normalization is provided. The normalization operation amplifies the clipped data signal to
Jiang Wu, Zhongpeng Wang, Jit S. Mandeep
wiley +1 more source
ICT Express, 2019 Due to large peak-to-average power ratio (PAPR) at the time domain OFDM signal, various peak signal reduction methods for OFDM systems have been proposed.
Satoshi Taroda +4 more
doaj +1 more source
Journal of Electrical and Computer Engineering, Volume 2025, Issue 1, 2025.Smart hospitals have enormous potential to improve global standards of medical services. Integrating fifth‐generation (5G) and beyond 5G radio with the present healthcare framework can make hospitals smarter. High spectral access, data rate, capacity, low latency, and large data handling are requirements of innovative hospitals.
Arun Kumar +2 more
wiley +1 more source
Advances in Condensed Matter Physics, Volume 2018, Issue 1, 2018., 2018 Light‐emitting diode‐ (LED‐) based visible light communication (VLC) has become a potential candidate for next generation high‐speed indoor wireless communication. Due to the limited modulation bandwidth of the LED, orthogonal frequency division multiplexing (OFDM) modulation is particularly preferred in the VLC system to overcome the ISI, which ...
Xinyue Guo +3 more
wiley +1 more source
A PAPR correction scheme for LoRa self‐jamming waveforms
IET Communications, Volume 18, Issue 19, Page 1588-1603, December 2024.A self‐jamming scheme of LoRa waveforms enabling secure transmissions is recently proposed in literature, which performs well in simulations. However, experiments on SDR equipment immediately showed that a transmission is impossible due to PAPR introduced by the waveform modification.
Clément Demeslay +5 more
wiley +1 more source
Wireless Communications and Mobile Computing, Volume 2018, Issue 1, 2018., 2018 This study proposes an iterative, joint channel estimation, equalization, and data detection method in the presence of high mobility for a multicarrier downlink system that communicates over rapidly time‐varying channels. The proposed method uses a basis expansion method (BEM) which has low computational complexity and helps to reduce the number of ...
Nihat Kabaoglu +3 more
wiley +1 more source
Earth and Space Science, Volume 11, Issue 8, August 2024.Abstract The Terminal Tracking Camera (TTCam) imaging system on the NASA Lucy Discovery mission consists of a pair of cameras that are being used mainly as a navigation and target acquisition system for the mission's asteroid encounters. However, a secondary science‐focused function of the TTCam system is to provide wide‐angle broadband images over a ...
Y. Zhao +11 more
wiley +1 more source
A Review of Partial Transmit Sequence for PAPR Reduction in the OFDM Systems
IEEE Access, 2019 Orthogonal frequency division multiplexing (OFDM) is a superior technology for the high-speed data rate of wire-line and wireless communication systems.
Yasir Amer Jawhar +6 more
doaj +1 more source
PAPR Reduction in OFDM Systems using Non-Linear Companding Transform
IOSR Journal of Electronics and Communication Engineering, 2014 In this paper a non-linear companding transform is proposed which can effectively reduce the PAPR value in OFDM systems. High value of PAPR has undesirable effects on the performance of wireless communication systems. Various companding schemes are used to reduce the problem of PAPR in orthogonal frequency division multiplexing schemes.
Deepender Gill, Garima Saini
openaire +1 more source
On the efficiency of PAPR reduction schemes deployed for DRM systems [PDF]
, 2016 Digital Radio Mondiale (DRM) is the universally, openly standardized digital broadcasting system for all frequencies including LW, MW, and SW as well as VHF bands.
Fuhrwerk, Martin +4 more
core +1 more source