Transceiving apparatus and method using space-frequency block-coded single-carrier frequency domain equalization
AssigneesSamsung Electronics Co., Ltd., Postech Foundation
InventorsJong-Hyung Kwun, Eung-Sun Kim, Jong-Hyeuk Lee, Gi-Hong Im, Hui-Chul Won, Jin-Ho Jang
Life of this patent
Estimating the term…
Abstract
Disclosed is a transceiving apparatus and method in which a space frequency block coding (SFBC) technique is applied to the SC-FDE technique. The transceiving method encodes an input signal into frequency-domain blocks so as to output at least two signal blocks in parallel to each other, inserts a cyclic prefix (CP) into the output signal blocks, and outputs the signal blocks through the same sub-channel using a corresponding antenna.
Claims14
A method for transmitting data in a communication system, which includes a transmission device and a reception device, in which the transmission device transmits a signal through at least two transmission antennas, and the reception device receives a signal through at least one reception antenna, the method comprising:
- encoding an input signal into frequency-domain blocks, and outputting at least two signal blocks in parallel to each other;
- and
- inserting a cyclic prefix (CP) into the output signal blocks, and outputting the signal blocks through each corresponding antenna by loading the signal blocks on a single carrier,
- wherein outputting the at least two signal blocks in parallel to each other comprises:
- demultiplexing N number of input signals to separate the input signals into even-numbered transmission samples and odd-numbered transmission samples, which have a period of N/2;
- and
- generating a first signal block and a second signal block by using the even-numbered and odd-numbered transmission samples.
A method for receiving data in a communication system, which includes a transmission device and a reception device, in which the transmission device transmits a signal through at least two transmission antennas, and the reception device receives a signal through at least one reception antenna, the method comprising:
- receiving signals output from at least two different transmission antennas through a single carrier by means of one reception antenna;
- removing a CP from the received signal;
- performing a serial to parallel conversion operation with respect to the CP-removed signal;
- performing Fourier transformation with respect to the parallel signals;
- detecting an even-numbered frequency component and an odd-numbered frequency component from the Fourier-transformed signals;
- demultiplexing the frequency components;
- performing inverse Fourier transformation with respect to an even-numbered frequency component of the demultiplexed frequency components;
- performing a complex conjugate operation with respect to an odd-numbered frequency component of the demultiplexed frequency components;
- performing inverse Fourier transformation with respect to the frequency component having been subjected to the complex conjugate operation;
- and
- multiplexing signals, which has been subject to the inverse Fourier transformation and has been output, thereby restoring original data.
A communication system comprising:
- a transmission device for transmitting a signal through at least two transmission antennas;
- and
- a reception device for receiving a signal through at least one reception antenna, wherein the transmission device comprises:
- a symbol mapping unit for mapping input information bits to symbols;
- a demultiplexer for demultiplexing the symbols output from the symbol mapping unit;
- a symbol processing unit for processing parallel symbols output from the demultiplexer, thereby outputting at least two signal blocks as frequency-domain blocks in parallel to each other;
- and
- a cyclic prefix (CP) insertion unit for inserting a CP into the signal blocks output in parallel from the symbol processing unit, and then transmitting the signal blocks,
- wherein the demultiplexer demultiplexes N number of input signals to separate the N input signals into even-numbered transmission samples and odd-numbered transmission samples, which have a period of N/2 and then outputs the even-numbered and odd-numbered transmission samples.
A single-carrier-based communication system comprising:
- a transmission device for transmitting a signal through at least two transmission antennas;
- and a reception device for receiving a signal through at least one reception antenna, wherein the transmission device comprises:
- a virtual frequency-domain block encoder for processing an input signal, and outputting signal blocks, which have a frequency-domain-encoded effect, in parallel to each other;
- and
- a cyclic prefix (CP) insertion unit for inserting a cyclic prefix into the signal blocks, and transmitting the signal blocks through corresponding transmission antennas,
- wherein the virtual frequency-domain block encoder comprises:
- a demultiplexer for demultiplexing N number of input signals to separate the N input signals into even-numbered transmission samples and odd-numbered transmission samples, which have a period of N/2, and then outputting the even-numbered and odd-numbered transmission samples;
- and
- a signal block generator for generating an even-numbered signal block and an odd-numbered signal block by using the even-numbered and odd-numbered transmission samples of the input signals.
A communication system comprising:
- a transmission device for transmitting a signal through at least two transmission antennas;
- and
- a reception device for receiving a signal through at least one reception antenna, wherein the reception device comprises:
- a cyclic prefix (CP) removing unit for removing a CP from a received signal;
- a serial to parallel converter for performing serial/parallel conversion with respect to a signal, from which a CP is removed by the CP removing unit;
- a Fourier transform unit for performing Fourier transformation with respect to signals output in parallel from the serial to parallel converter;
- a signal block detector for detecting an even-numbered frequency component and an odd-numbered frequency component by using an output signal of the Fourier transform unit;
- a demultiplexer for demultiplexing the frequency components detected by the signal block detector;
- a first inverse Fourier transform unit for performing inverse Fourier transformation with respect to an even-numbered frequency component of signals output from the demultiplexer;
- a complex conjugate operator for performing a complex conjugate operation with respect to an odd-numbered frequency component of signals output from the demultiplexer;
- a second inverse Fourier transform unit for performing inverse Fourier transformation with respect to an output signal of the complex conjugate operator;
- and
- a multiplexer for multiplexing output signals of the first and second inverse Fourier transform units, thereby restoring original data.
Dependencies are inferred from the claim text.