Results 71 to 80 of about 4,646,007 (214)

Multiuser MIMO-OFDM for Next-Generation Wireless Systems

open access: yes, 2007
This overview portrays the 40-year evolution of orthogonal frequency division multiplexing (OFDM) research. The amelioration of powerful multicarrier OFDM arrangements with multiple-input multiple-output (MIMO) systems has numerous benefits, which are ...
Jiang, M   +3 more
core   +2 more sources

Adapting DVB-SH system parameters to mobile environments [PDF]

open access: yes, 2011
A performance analysis of the digital video broadcasting - satellite to handheld (DVB-SH) system in presence of ground mobile terminals (GMTs) is presented. The paper focuses on the Doppler spread issue.
Escrig, Benoît   +2 more
core  

Modified asymmetrically-clipped optical orthogonal frequency-division multiplexing system performance [PDF]

open access: yes, 2013
Improvement in bit error rate performance of asymmetrically-clipped optical orthogonal frequency-division multiplexing (ACO-OFDM) is achieved through proposed modification by using unipolar encoding.
Mohamed, Salma D.   +7 more
core   +1 more source

Carrier Frequency Offset Effects on OFDM System over Rayleigh Fading Channel

open access: yesJournal of Electrical, Electronics and Informatics, 2019
Orthogonal Frequency Division Multiplexing (OFDM) system showed the use of Discrete Fourier Transform (DFT) and Inverse Discrete Fourier Transform (IDFT) to perform the baseband modulation and demodulation.
N. M. A. E. Dewi Wirastuti   +3 more
doaj   +1 more source

APR Reduction Technique based on OFDM Pilot Filter Bank Limiting for Satellite Mobile Communications

open access: yesMATEC Web of Conferences, 2018
Combined with OFDM (Orthogonal Frequency Division Multiplexing), satellite mobile communications will effectively achieve on-demand communication in areas with an ultra-low density of users.
Dai Tianfang
doaj   +1 more source

A Turbo-Coded Burst-by-Burst Adaptive Wide-Band Speech Transceiver

open access: yes, 2000
Turbo-coded burst-by-burst adaptive orthogonal frequency division multiplex (AOFDM) wide-band speech transceivers are proposed. A constant throughput adaptive OFDM transceiver was designed and benchmarked against a time-variant rate scheme.
Münster, M., Keller, T., Hanzo, L.
core   +1 more source

Multicarrier Multiplexing Method for Very Wide Bandwidth Transmission

open access: yesEURASIP Journal on Wireless Communications and Networking, 2006
The multicarrier orthogonal code division multiplexing (MC-OCDM) introduced here has been designed for very wide bandwidth (VWB) point-to-point and point-to-multipoint transmission.
doaj  

Effects of Doppler-Division Multiplexing on OFDM Joint Sensing and Communication Systems

open access: yesIEEE Open Journal of Signal Processing
A promising waveform candidate for future joint sensing and communication systems is orthogonal frequency-division multiplexing (OFDM). For such systems, supporting multiple transmit antennas requires multiplexing methods for the generation of orthogonal
Oliver Lang   +3 more
doaj   +1 more source

PAPR reduction using polynomial based compressing with Rapp model in GFDM

open access: yese-Prime: Advances in Electrical Engineering, Electronics and Energy
Generalized Frequency Division Multiplexing (GFDM) has been considered as an attractive candidate to replace Orthogonal Frequency Division Multiplexing (OFDM) for the fifth generation (5 G) mobile networks. GFDM system has better spectral characteristics
P.V. Naganjaneyulu   +3 more
doaj   +1 more source

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   +1 more source

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