Results 201 to 210 of about 50,443 (237)

Coded orthogonal frequency division multiplex [TV broadcasting]

Proceedings of the IEEE, 1995
Technological evolution and the ever-increasing demand for higher-quality services give broadcasters a strong incentive to completely digitize their broadcasting networks. This digitization, which is already well advanced in many program production areas and transmission links, now has to be extended to complete the last link in the broadcast chain; i ...
B. Le Floch, M. Alard, C. Berrou
openaire   +1 more source

Equalization of orthogonal frequency division multiplexing signals

1994 IEEE GLOBECOM. Communications: The Global Bridge, 2002
An equalizer is generally a transversal filter which can be used either at the passband or the baseband. Adaptive equalizers adapt filter coefficients to cancel the channel response. We study two different frequency domain adaptive equalizers for orthogonal frequency division multiplexing systems (OFDM).
J. Rinne, M. Renfors
openaire   +1 more source

Orthogonal Frequency Division Multiplex (OFDM)

2004
Almost from the beginning of the electrical transmission of messages about 100 years ago, single-carrier methods have been used for transmitting information. The message to be transmitted is impressed on a sinusoidal carrier by applying analog amplitude, frequency or phase modulation techniques.
openaire   +1 more source

Constant-envelope orthogonal frequency division multiplexing modulation

Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference on Communications,, 1999
A constant-envelope signaling approach for orthogonal frequency division multiplexing (OFDM) modulation is proposed. By splitting the standard OFDM complex signals into real and imaginary sections, the proposed approach employs phase modulation in conjunction with signal clipping to endow the transmitted signal with a constant envelope, without ...
null Char-Dir Chung, null Shih-Ming Cho
openaire   +1 more source

Interleaved Orthogonal Frequency Division Multiplexing (IOFDM) System

IEEE Transactions on Signal Processing, 2004
In orthogonal frequency division multiplexing (OFDM) systems, for every block of K data samples, an overhead of L samples of cyclic prefix (CP) or zero padding (ZP) is added to combat frequency selective channels. The code rate, which is defined as the ratio K/(K+L), is a measure of the efficiency of transmitting user information.
Prasad, VGS, Hari, KVS
openaire   +1 more source

Coded Orthogonal Frequency Division Multiplex (COFDM)

2010
Almost from the beginning of the electrical transmission of messages about 100 years ago, single-carrier methods have been used for transmitting information. The message to be transmitted is impressed on a sinusoidal carrier by applying analog amplitude, frequency or phase modulation techniques.
openaire   +1 more source

Orthogonal Delay-Doppler Division Multiplexing Modulation

IEEE Transactions on Wireless Communications, 2022
Hai Lin, Jinhong Yuan
exaly  

Orthogonal Frequency Division Multiplexing for IoT

2021
Arvind Kumar, Rajoo Pandey
openaire   +1 more source

Composite Multiple-Mode Orthogonal Frequency Division Multiplexing With Index Modulation

IEEE Transactions on Wireless Communications, 2023
Jun Li, Shuping Dang, Yu Huang
exaly  

Spectrum-Aware Orthogonal Frequency Division Multiplexing

2014
Ph. D.
openaire   +1 more source