Results 81 to 90 of about 4,646,007 (214)

OFDM Signal Research with Varied Subcarriers Number

Transport and Telecommunication, 2016
The orthogonal frequency division multiplexing (OFDM) aggregate signal energy characteristics are studied based on the OFDM signal simulation model. The information reliability of OFDM signal is explored for different sets of OFDM subcarrier numbers and ...
Uryvsky Leonid, Osypchuk Serhii
doaj   +1 more source

Adaptive Modulation Techniques for Duplex OFDM Transmission

, 2000
The design tradeoffs of turbo-coded burst-by-burst adaptive orthogonal frequency division multiplex (OFDM) wide-band transceivers are analyzed. We demonstrate that upon aiming for a higher throughput a higher proportion of low-quality OFDM subcarriers ...
Keller, T., Hanzo, L.
core   +1 more source

Orthogonal frequency division multiplex synchronization techniques for frequency-selective fading channels

, 2001
The effect of time-domain and frequency-domain synchronization errors is quantified in the context of various coherently and noncoherently detected 1, 2, and 4 bits/symbol OFDM constellations, in order to demonstrate the wide applicability of the ...
Piazzo, L., MANDARINI, Paolo, HANZO L., PIAZZO, Lorenzo, Mandarini, P., KELLER T., Keller, T., Hanzo, L.   +7 more
core   +1 more source

Extremely low frequency based communication link [PDF]

, 2009
The paper discusses the literature review and the possibility of using the ground itself as transmission medium for various users’ transceivers and an administrator transceiver using Multi-Carrier-Direct Sequence-Code Division Multiple Access (MC-DS-CDMA)
Holmes, Violeta, Sibley, Martin J.N., Mather, Peter, Alaiwi, A   +3 more
core   +2 more sources

Recital on Multicarrier Communications: Space-Time Coded versus Adaptive OFDM/MC-CDMA

, 2004
This overview portrays the evolution of multi-carrier systems from their conception and demonstrates that they are capable of supporting the requirements of future wireless systems of the next generation.
Munster, M, Hanzo, L., Yang, L-L, Choi, B.J.   +3 more
core   +1 more source

Pengaruh Frequency Selectivity Pada Orthogonal Frequency Division Multiplexing (OFDM) [PDF]

, 2013
Orthogonal Frequency Division Multiplexing (OFDM) adalah suatu nama khusus dari multicarrier, dimana suatu aliran data berkecepatan tinggi ditransmisikan melalui sejumlah subcarrier berkecepatan rendah.
Tazkia, Fahima Ulfi, Mustofa, Ali, Purnomowati, Endah Budi   +2 more
core   +1 more source

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

, 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   +1 more source

Peak-to-average Power Ratio of Orthogonal Frequency Division Multiplexing [PDF]

, 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  

Reducing Intercarrier Interference for Orthogonal Frequency Division Multiplexing

, 2010
Orthogonal frequency division multiplexing (OFDM) is very sensitive to the frequency offset that causes intercarrier interference (ICI). A multiple symbol encapsulated orthogonal frequency division multiplexing (MSE-OFDM) system with a self inter ...
Mian Chen, Jihyun Park, Wansong Zhang, Jong Rak Yoon, Chundan Lin   +4 more
core   +1 more source

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

Photonics
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, Chen Chen, Zhihong Zeng, Min Liu, Jia Ye, Cuiwei He, Shenjie Huang, H. Y. Fu, Harald Haas   +8 more
doaj   +1 more source