An optical transmitter may receive and encode a first group of bits into first encoded data and
second encoded data. The optical transmitter may supply a first sub-carrier carrying a first …

An optical transmitter includes: a digital signal process unit that generates a drive signal for
generating multi-carrier signals through a plurality of independent digital signal processes …

To reduce PAPR in an optical OFDM communication system, light is phase-modulated by a
base-band OFDM signal which is the output of a transmission signal processing unit 100 …

A base station may include one or more processors to receive repetitive data transmitted
using a set of subcarriers of a physical resource block (PRB); apply a first orthogonal pattern …

An optical transmitter transmits an orthogonal frequency division multiplexing symbol in
which only one-half of available subcarriers are modulated with data and the remaining …

Disclosed is a data transmitter, including: a demultiplexer configured to demultiplex a data
subcarrier, and a training sequence or a pilot subcarrier included in a signal which needs to …

Embodiments of the present invention provide a coefficient determining apparatus,
equalizer, receiver and transmitter. The coefficient determining apparatus comprises: a …

The present invention relates to a method and a device. The method includes: mixing a multi-
carrier optical signal with a local optical signal having the same center frequency as that of …

Chromatic dispersion is pre-compensated in a direct-detected orthogonal frequency-division
multiplexed optical transmitter through digital signal processing methods, to generate …

(57) ABSTRACT A coaxial physical layer device operates in at least two dif ferent modes: a
discovery mode and a normal mode. In the discovery mode, a first orthogonal frequency …