Results 131 to 140 of about 3,362 (185)

End-to-End DAE-LDPC-OFDM Transceiver with Learned Belief Propagation Decoder for Robust and Power-Efficient Wireless Communication. [PDF]

Sensors (Basel)
Mohammed M, Çevik M.
europepmc   +1 more source

A 3.584 Tbps coherent receiver chip on InP-LiNbO₃ wafer-level integration platform. [PDF]

Light Sci Appl
Xie X, Wei C, He X, Chen Y, Wang C, Sun J, Jiang L, Ye J, Zou X, Pan W, Yan L.   +10 more
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Optical arbitrary waveform generation (OAWG) using actively phase-stabilized spectral stitching. [PDF]

Light Sci Appl
Drayss D, Fang D, Sherifaj A, Peng H, Füllner C, Henauer T, Lihachev G, Schmitz L, Harter T, Freude W, Randel S, Kippenberg TJ, Zwick T, Koos C.   +13 more
europepmc   +1 more source

Designand Implementation of a Novel Wideband HF Communication System Based on NC-OFDM and Probabilistic Shaping. [PDF]

Sensors (Basel)
Yang R, Bai Y, Hu Z.
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Channel quality predictions assisted by new algorithms for high throughput satellite and 5G systems. [PDF]

Sci Rep
Al-Saegh AM, Ali EM, Abdalrazak MQ, Elmunim NA, Alibakhshikenari M, Virdee BS, Abbasi NA, Chaudhary MA, Kouhalvandi L, Elwi TA, Livreri P, Saber T.   +11 more
europepmc   +1 more source

Securing and optimizing optical transmission in quantum wells using OAM and advanced modulation techniques. [PDF]

Sci Rep
Ahmad M, Wang Z, Fang M, Huang Z, Xie G.
europepmc   +1 more source

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Analysis of throughput and error rate of 16-QAM, 64-QAM, and 256-QAM O-NOMA waveforms

Journal of Optical Communications, 2023
Abstract This study presents a comprehensive analysis of the throughput performance, spectrum efficiency, and block error rate (BLER) of optical non-orthogonal multiple access (O-NOMA) waveforms using 16-quadrature amplitude modulation (QAM), 64-QAM, and 256-QAM modulation schemes.
Arun Kumar, Nidhi Gour, Himanshu Sharma
openaire   +1 more source

Multicarrier QAM modulator

ISCAS'99. Proceedings of the 1999 IEEE International Symposium on Circuits and Systems VLSI (Cat. No.99CH36349), 2003
A multicarrier QAM modulator has been developed and simulated. The multicarrier QAM modulator contains four upconversion circuits. Each upconverting circuit accepts 12 b in-phase and quadrature data streams, interpolates those by 16 and upconverts the baseband signal to a selected center frequency.
Jouko Vankka, Marko Kosunen, Kari Halonen   +2 more
openaire   +1 more source

Comparison of Quotiently Coherent QAM, Differentially Coherent QAM and Coherent QAM over Rayleigh Flat Fading Channel

International Journal on Wireless & Optical Communications, 2003
A quotient coded quadrature amplitude modulation system having only a finite number of transmitted signal amplitudes is proposed. The expression to estimate the Symbol-Error-Rate (SER) performance of the quotiently coherent demodulated QAM (QQAM) system over a multiplicative Rayleigh fading channel is obtained.
Mingwei Wu 0001, Yong Huat Chew, Tjeng Thiang Tjhung   +2 more
openaire   +1 more source