| Patent application number | Description | Published |
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| 20100205511 | ENCODING METHOD, ENCODER, AND DECODER - A low-density parity check convolution code (LDPC-CC) is made, and a signal sequence is sent after subjected to an error-correcting encodement using the low-density parity check convolution code. In this case, a low-density parity check code of a time-variant period (3 | 08-12-2010 |
| 20100251061 | TRANSMISSION DEVICE - Provided is a transmission device which improves the error rate characteristic upon decoding when performing error correction encoding by using a self-orthogonal code or an LDPC-CC in a communication system using a communication path having a fading fluctuation, multi-value modulation, or MIMO transmission. In the transmission device, the self-orthogonal encoding unit ( | 09-30-2010 |
| 20100269009 | ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD - There is provided an encoder that provides a termination sequence with a simple structure for LDPC-CC encoding and reduces an amount of the termination sequence transmitted to a transmission line. The LDPC-CC encoder ( | 10-21-2010 |
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| 20080240289 | PILOT SIGNAL TRANSMISSION TECHNIQUE AND DIGITAL COMMUNICATION SYSTEM USING SAME - In a digital communication system such as a mobile radio system, fading distortion is compensated with a raised precision. In a transmitter, pilot signals are regularly inserted in the information signals. The amplitude of the pilot signals are set larger than the maximum possible amplitude of the information signals. The modulation scheme of the pilot signals may be different from that of the information signals. In a receiver, the fading distortion of each of the pilot signals is determined. The fading distortions of the information signals are estimated by interpolation using the determined fading distortion of the pilot signal, and then compensated. The frequency band of each information signal is preferably limited with a roll-off filter with a roll-off coefficient ranging from 0.1 to 0.4. | 10-02-2008 |
| 20090011699 | TRANSMISSION APPARATUS, RECEPTION APPARATUS AND DIGITAL RADIO COMMUNICATION METHOD - A digital radio communication method includes selecting a modulation scheme for a transmission data signal from among a plurality of modulation schemes. The transmission data signal is modulated according to the selected modulation scheme to generate a first symbol, the first symbol being a first quadrature baseband signal. Further, a pilot signal is modulated according to a specific modulation scheme to generate a second symbol, the second symbol being a second quadrature baseband signal. | 01-08-2009 |
| 20090046811 | TRANSMITTING APPARATUS, RECEIVING APPARATUS, TRANSMISSION METHOD, AND RECEPTION METHOD - A transmission method includes generating a control information signal relating to control information of a data signal. A transmission frame is formed by repeating and discretely arranging the same control information signal. The data signal and the control information signal are transmitted using the transmission frame. | 02-19-2009 |
| 20100128758 | TRANSMISSION METHOD, TRANSMISSION APPARATUS, AND RECEPTION APPARATUS - A transmission method for transmitting modulation signals of a plurality of channels to the same frequency band from a plurality of antennas. At the time when a symbol for demodulation is inserted in a channel, in another channel symbol, the same phase and quadrature signals in the in-phase-quadrature plane are made to be zero signals. Thus, a plurality of modulation signals are multiplexed and transmitted and the transmitted multiplexed modulation signals are demultiplexed and demodulated at a reception apparatus, thereby improving the data transmission rate. | 05-27-2010 |
