Results 111 to 120 of about 14,564 (231)

Minimum Bit Error Rate Multiuser Detection in Multiple Antenna Aided OFDM

open access: yes, 2003
In this contribution, we propose a Minimum Bit Error Rate (MBER) multiuser detector for Space Division Multiple Access (SDMA) aided Orthogonal Frequency Division Multiplexing (OFDM) systems. It is shown that the MBER detector outperforms the Minimum Mean
Alias, M.Y.   +3 more
core  

Turbo-Coded Parallel Modem Techniques for Personal Communications

open access: yes, 1997
In this paper we study the performance of the wideband Orthogonal Frequency Division Multiplexing (OFDM) system in conjunction with channel coding based on turbo codes over a range of wideband Rayleigh fading channels.
Woodard, J P, Keller, T, Hanzo, L
core  

Peak-to-average Power Ratio of Orthogonal Frequency Division Multiplexing

open access: yes, 2002
Orthogonal frequency division multiplexing (OFDM) is successfully used in many wireless digital communication systems over multipath channels. One of the principal disadvantages of OFDM is the occurrence of high peak to average power ratios (PAR). Many
Jayalath, Dhammika, Tellambura, Chintha
core  

Orthogonal Frequency Division Diversity and Multiplexing for 6G OWC: Principle and Underwater Use Case

open access: yesPhotonics
In this paper, we, for the first time, propose and demonstrate an orthogonal frequency division diversity and multiplexing (OFDDM) scheme for the sixth-generation (6G) underwater optical wireless communication (UOWC) systems.
Jiamin Chen   +8 more
doaj   +1 more source

Review of the channel coding, O-OFDM, and synchronization techniques of O-OFDM used in visible light communication systems

open access: yesCogent Engineering
Optical Wireless Communication (OWC) systems offer numerous benefits, such as increased bandwidth, access to an unregulated spectrum, immunity to electromagnetic interference, and the ability to reuse the spectrum effectively.
Praveen Yadav, Sangeetha R. G.
doaj   +1 more source

HIPERLAN-like Turbo Coded Multi-user Detection Assisted OFDM Based Interactive Video Telephony

open access: yes, 2001
Multiuser detection assisted, multiple transmit antenna based OFDM arrangements are studied in the context of HIPERLAN 2-like systems. It is demonstrated that the system’s user capacity can be improved with the aid of unique spatial user signatures ...
Münster, M., Cherriman, P.J., Hanzo, L.
core  

Comparison of Three Different Cancellation Schemes for Orthogonal Frequency Division Multiplexing OFDM System

open access: yes, 2019
Orthogonal Frequency Division Multiplexing OFDM is an exceptional case of Frequency Division Multiplexing. The dilemma of OFDM is its sensitivity to frequency offset between the transmitted and received carrier frequencies.
Ma Khin Saw, Aye Aye Khine
core   +1 more source

Soft-Information Assisted Near-Optimum Nonlinear Detection for BLAST-type Space Division Multiplexing OFDM Systems

open access: yes, 2007
In this contribution, a nonlinear hybrid detection scheme based on a novel soft-information assisted Genetic Algorithm (GA) is proposed for a Turbo Convolutional (TC) coded Space Division Multiplexing (SDM) aided Orthogonal Frequency Division ...
Akhtman, Jos, Jiang, Ming, Hanzo, Lajos
core  

The Performance of Turbo Coded Orthogonal Frequency Division Multiplexing System over Flat Rayleigh Fading Channel

open access: yesJournal of Engineering and Sustainable Development, 2009
This work investigates the effectiveness of Turbo Codes and Orthogonal Frequency Division Multiplexing (OFDM) system, for communication over the flat Rayleigh fading additive white Gaussian noise (AWGN) channel. The Fast Fourier Transform (FFT) is used
Khamis A. Zidan   +3 more
doaj  

Reed Solomon Coding in Orthogonal Frequency Division Multiplexing (OFDM) Communication Systems

open access: yesJournal of Engineering and Sustainable Development, 2012
This paper presents a MATLAB simulation that has been developed to investigate Orthogonal Frequency Division Multiplexing (OFDM) communication system using Reed Solomon (RS) Coding process. The efficient encoding and decoding algorithm, and the powerful of error correction capability of Reed Solomon Coding make it one of the most widely used error ...
Kadhum Al-Majdi   +2 more
openaire   +1 more source

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