Results 21 to 30 of about 324,497 (361)

Exact BER of Rectangular-Constellation QAM Subjected to Asynchronous Co-Channel Interference and Nakagami-m Fading [PDF]

open access: yes, 2006
The exact average bit error ratio (BER) of the rectangular quadrature amplitude modulation (QAM) constellation is studied in the context of asynchronous co-channel interference (CCI) and Nakagami-m fading.
Liu, X.   +3 more
core   +1 more source

Performance Analysis of Turbo Codes

open access: yesCommunications, 2013
The article focuses on the performance analyses of Turbo Codes. These codes belong to the group of error correction codes. By their use, it is possible to achieve high system performance.
Jakub Sedy   +3 more
doaj   +1 more source

Exact BER performance of asynchronous MC-DS-CDMA over Nakagami-m fading channels [PDF]

open access: yes, 2008
In this contribution an accurate average bit error rate (BER) formula is derived for Nakagami-faded MC-DSCDMA in the context of asynchronous transmissions and random spreading sequences.
Smida, Besma   +5 more
core   +1 more source

Analysis of Possibilities of Increasing the Spanned Distance Using EDFA and DRA in DWDM System

open access: yesCommunications, 2017
The aim of this article is a comparison of the EDFA (Erbium Doped Fibre Amplifier) and the DRA (Distributed Raman Amplifier) in a fully optical communication system, working on a specific wavelength. The amplifiers are compared based on their position in
Tomas Ivaniga   +3 more
doaj   +1 more source

Accurate BER Analysis of Asynchronous DS-CDMA Systems in Ricean Channels [PDF]

open access: yes, 2006
The accurate Bit Error Rate (BER) calculation of an asynchronous Ricean-faded DS-CDMA system using random spreading sequences and BPSK modulation is studied in this paper.
Liu, X.   +3 more
core   +1 more source

On approximation in the Bers spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1973
Let D D be a Jordan domain in the complex plane with rectifiable boundary
openaire   +1 more source

A Novel PM-OFDM-CDMA System for 5G Wireless Communication with High Capacity and Low Energy Consumption

open access: yesASM Science Journal, 2021
Phase Modulation Orthogonal Frequency Division Multiplexing (PM-OFDM) and Code Division Multiple Access (CDMA) have distinctive advantages. On one hand, PM-OFDM is an attractive technique to combat multipath fading and reduce high PAPR in conventional ...
Jamal Mestoui
doaj   +1 more source

Information Hiding in Color Image based on LSB and FA [PDF]

open access: yesKirkuk Journal of Science, 2017
In this research was to hide information in color images of the type of Joint Photographic Experts Group (JPEG) using hiding technique Least Significant Bit (LSB) with Firefly algorithm.
Dr. Ahmed Sami Nori, Jasim Ibrahim Jasim
doaj   +1 more source

Desain Program Simulasi Unjuk Kerja Kode Walsh Pada Kanal Multipath Fading

open access: yesMatrix: Jurnal Manajemen Teknologi dan Informatika, 2020
Penelitian ini bertujuan untuk mengetahui pengaruh perubahan jumlah komponen multipath pada unjuk kerja kode Walsh pada kanal multipath fading melalui simulasi dengan menggunakan software Matlab.
Made Arya Putra Kusuma   +3 more
doaj   +1 more source

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