Abstract:
Se realiza un proceso de precodificación en una primera señal de banda base y una segunda señal de banda base para generar una primera señal de precodificación y una segunda señal de precodificación. Una señal piloto se inserta en la primera señal de precodificación y el cambio de fase se realiza en la segunda señal de precodificación. Se inserta una señal piloto en la segunda señal de precodificación con cambio de fase, y el cambio de fase se realiza además en la segunda señal de precodificación con cambio de fase con la señal piloto insertada.
Abstract:
This transmitting device is provided with M (where M is an integer at least equal to 2) signal processing units which respectively generate modulated signals for M receiving devices, a multiplexing signal processing unit, and N (where N is an integer at least equal to 1) antenna units. When transmitting a plurality of streams, each of the M signal processing units generates two mapped signals, generates first and second precoded signals by subjecting the two mapped signals to precoding, periodically changes the phase of signal points in the IQ plane, with respect to the second precoded signal, and outputs the resulting phase-changed signal, and outputs the first precoded signal and the phase-changed signal as two modulated signals. When transmitting one stream, each of the M signal processing units outputs one modulated signal. The multiplexing signal processing unit multiplexes the modulated signals output from the M signal processing units, to generate N multiplexed signals. The N antenna units transmit each of the N multiplexed signals.
Abstract:
A first precoding signal and a second precoding signal are generated by subjecting a first baseband signal and a second baseband signal to precoding processing, a pilot signal is inserted into the first precoding signal, the second precoding signal is subjected to phase change, a pilot signal is inserted into the second precoding signal subjected to the phase change, and the second precoding signal into which the pilot signal has been inserted after the phase change is further subjected to phase change.
Abstract:
REFERIDO A UN METODO DE TRANSMISION QUE TRANSMITE SIMULTANEAMENTE UNA PRIMERA SENAL MODULADA Y UNA SEGUNDA SENAL MODULADA EN UNA FRECUENCIA COMUN, SE REALIZA LA PRECODIFICACION EN AMBAS SENALES USANDO UNA MATRIZ DE PRECODIFICACION FIJA, Y POR EL CAMBIO REGULAR DE LA FASE DE AL MENOS UNA DE LAS SENALES, MEJORANDO ASI LA CALIDAD DE SENAL DE DATOS RECIBIDA EN UN DISPOSITIVO DE RECEPCION
Abstract:
A first transmission signal z 1 (t) and a second transmission signal z 2 (t) are generated from a first modulated signal s 1 (t) and a second modulated signal s 2 (t) by using a precoding matrix, and parameters of the precoding matrix are calculated from feedback information.
Abstract:
By a transmission method according to one aspect of the present disclosure, in a broadcasting system that generates a first broadcasting signal and a second broadcasting signal by performing multi-antenna encoding on program data, and wirelessly transmits a first broadcasting signal and a second broadcasting signal, a first transmit station transmits the first broadcasting signal, a second transmit station transmits the second broadcasting signal, the first transmit station and the second transmit station transmit the first broadcasting signal and the second broadcasting signal to an overlapping area at an identical time using an overlapping frequency band, polarized wave transmitted from the first transmit station differs from polarized wave transmitted from the second transmit station, and arrangement of the first transmit station differs from arrangement of the second transmit station.
Abstract:
In a transmission method according to one aspect of the present disclosure, quality of received data can be improved in a reception device, when a probability of increasing a minimum Euclid at a signal point in an in-phase I-orthogonal Q plane during reception is increased in a radio wave propagation environment in which a direct wave is dominant. This enables provision of an MIMO (Multiple-Input Multiple-Output) system, which can improve the reception quality in an LOS environment while a plurality of transmit antennas and a plurality of receive antennas are used.
Abstract:
An encoding method of generating an encoded sequence by performing encoding of a given encoding rate based on a predetermined parity check matrix. The predetermined matrix is either a first parity check matrix or a second parity check matrix. The first parity check matrix corresponds to a low density parity check (LDPC) convolutional code that uses a plurality of parity check polynomials, and the second parity check matrix is generated by performing at least one of row permutation and column permutation on the first parity check matrix. A parity check polynomial satisfying zero of the LDPC convolutional code is expressible by using a specific mathematical expression.
Abstract:
Disclosed is a precoding method for generating, from a plurality of baseband signals, a plurality of precoded signals that are transmitted in the same frequency bandwidth at the same time. According to the precoding method, one matrix is selected from among matrices defining a precoding process that is performed on the plurality of baseband signals by hopping between the matrices. A first baseband signal and a second baseband signal relating to a first coded block and a second coded block generated by using a predetermined error correction block coding scheme satisfy a given condition.
Abstract:
Provided is control information related to polarizations of antennas for MISO communication. The control signal generator generates polarization information indicating whether antennas used for transmission by MISO have only a first polarization or have a second polarization as well as the first polarization. With this structure, the present invention allows for the use of combinations of SISO, MISO and MIMO, taking the polarization of antennas. Furthermore, the present invention enables the receiver to reduce the power consumption.