US 2010/0166116 A1 · METHOD AND DEVICE FOR RECEIVING OPFDM-DQPSK SIGNAL

Abstract

In the field of communication and transmission, a method and a device for receiving an OPFDM-DQPSK signal are provided. The device includes a power splitter, adapted to split the OPFDM-DQPSK signal into two beams of signals; a polarization beam splitter (PBS), adapted to splitting one of the two beams of signals into a first signal and a second signal; a demultiplexer (Demux), adapted to demultiplex the other beam of signal to obtain a third signal and a fourth signal; two delayers, adapted to delay the third signal and the fourth signal respectively; a first frequency-mixing receiving module, adapted to perform frequency-mixing receiving on the first signal and the delayed third signal; a second frequency-mixing receiving module, adapted to perform frequency-mixing receiving on the second signal and the delayed fourth signal; and a decision recovery module, adapted to recover four logical sequences by performing decision on the four electrical signals.

Claims9

Dependent claims

A device for receiving an orthogonal polarized frequency division multiplexed-differential quadrature phase shift keying (OPFDM-DQPSK) signal, comprising:

a power splitter, adapted to split the OPFDM-DQPSK signal into a Signal-1 and a Signal-2 having the same power;
a polarization beam splitter (PBS), adapted to split the Signal-1 into an A(t) signal and a B(t) signal having polarization states orthogonal to each other;
a demultiplexer (Demux), adapted to demultiplex the Signal-2 to obtain a C(t) signal and a D(t) signal;
a first delayer, adapted to delay the C(t) signal for a time of one code element T to obtain a C(t-T) signal;
a second delayer, adapted to delay the D(t) signal for a time of one code element T to obtain a D(t-T) signal;
a first frequency-mixing receiving module, adapted to perform frequency-mixing receiving on the A(t) signal and the C(t-T) signal to obtain a first electrical signal and a second electrical signal;
a second frequency-mixing receiving module, adapted to perform frequency-mixing receiving on the B(t) signal and the D(t-T) signal to obtain a third electrical signal and a fourth electrical signal;
and
a decision recovery module, adapted to recover four logical sequences by performing decision on the first electrical signal, the second electrical signal, the third electrical signal, and the fourth electrical signal respectively.

6 more elements

A method for receiving an orthogonal polarized frequency division multiplexed-differential quadrature phase shift keying (OPFDM-DQPSK) signal, comprising:

receiving the OPFDM-DQPSK signal, and splitting the OPFDM-DQPSK signal into a Signal-1 and a Signal-2 having the same power;
splitting the Signal-1 into an A(t) signal and a B(t) signal having polarization states orthogonal to each other;
demultiplexing the Signal-2 to obtain a C(t) signal and a D(t) signal;
respectively delaying the C(t) signal and the D(t) signal for a time of one code element T to obtain a C(t-T) signal and a D(t-T) signal;
performing frequency-mixing receiving on the A(t) signal and the C(t-T) signal to obtain a first electrical signal and a second electrical signal;
performing frequency-mixing receiving on the B(t) signal and the D(t-T) signal to obtain a third electrical signal and a fourth electrical signal;
and
recovering four logical sequences by performing decision on the first electrical signal, the second electrical signal, the third electrical signal, and the fourth electrical signal respectively.

5 more elements

Dependencies are inferred from the claim text.

Method and device for receiving opfdm-dqpsk signal

Life of this patent

Method and device for receiving opfdm-dqpsk signal

Life of this patent

Abstract

Claims9