Patent application number | Description | Published |
20100146355 | Retransmission Method, Communication System, and Transmission Device - Disclosed are a retransmission method and a communication system which can realize a preferable trade-off between the feedback information amount and the error ratio characteristic. In the communication system, an encoding unit ( | 06-10-2010 |
20100192037 | RADIO COMMUNICATION APPARATUS AND REDUNDANCY VERSION TRANSMISSION CONTROL METHOD - Optimal error rate performance can always be obtained and the number of retransmissions can be minimized in IR-type HARQ using an LDPC code as an error correction code. An LDPC encoding section | 07-29-2010 |
20100251062 | ENCODING METHOD AND TRANSMISSION DEVICE - Provided is an encoding method including: a step of extending a bidiagonal line of a basic matrix of m rows and n columns in the direction of a bidiagonal line according to an encoding ratio 1/k of the spread code (wherein k=3, 4, 5, . . . , k0) set in the LDPC code inspection matrix so as to constitute an extended matrix of the bidiagonal line structure; a step of moving a first non-zero element of the parity bit portion in the (i*m+1)-th row to the (n−m+1)-th column (wherein i=1, 2, . . . , k0−2) leftward along the row; a step of calculating the parity bit of the (n−m+1)-th column by using a first inspection relationship as a start factor; and a step of simultaneously calculating parity bits of a plurality of groups by the recursive encoding method by using the inspection relationship moved leftward to the (n−m+1)-th column. | 09-30-2010 |
20100275090 | RADIO COMMUNICATION APPARATUS AND PUNCTURING METHOD - A radio communication apparatus is provided that enables degradation of error rate performance due to puncturing to be minimized when an LDPC code is used as an error correcting code. In this apparatus, a padding bit insertion section | 10-28-2010 |
20110289375 | METHOD FOR CONSTRUCTING AN LDPC CODE, TRANSMITTER, AND RECEIVER - Disclosed are: a method for constructing a low-density parity-check (LDPC) code for use in next-generation mobile communication and deep-space communication by using a cyclic distribution; a transmitter; a receiver; and a system. The method includes a block cycle determination step in which the distribution of a block cycle constructed from non-zero cyclic shift element values is determined for the basic matrix of the LDPC code, a priority determination step in which the priorities of the non-zero cyclic shift element values included in each block cycle are determined on the basis of the determined block cycle distribution, and a calculation step in which the greatest common divisor is determined for the permutation elements of all magnitudes in the check matrix of the LDPC code, and the divisor is factored. According to this method, short cycles will not be included in any actual check matrix of an LDPC code constructed by using all different permutation elements. | 11-24-2011 |
20140209809 | RADIATION DETECTORS - The present disclosure provides a radiation detector, comprising: a semiconductor crystal for detecting radiation, the semiconductor crystal comprising a top surface, a bottom surface, and at least one side surface; at least one anode arranged on at least one of the top surface, the bottom surface, and the at least one side surface; and at least one cathode arranged on at least another one of the top surface, the bottom surface, and the at least one side surface, wherein the at least one anode each has a stripe shape, the at least one cathode each has a planar or curved shape, and the at least one cathode and the at least one anode extend in parallel with respect to each other to a length substantially equal to that of the anode. Such an electrode structure can improve energy resolution and detection efficiency of the radiation detector effectively. | 07-31-2014 |
20140319635 | SEMICONDUCTOR DETECTOR - The invention provides a semiconductor detector, and the semiconductor detector comprises a semiconductor crystal, a cathode, an anode and at least one ladder electrode; the semiconductor crystal comprises a top surface, a bottom surface and at least one side; the cathode, the anode and the ladder electrode are conductive thin films deposited on a surface of the semiconductor crystal; the cathode is disposed on the bottom surface of the semiconductor crystal, the anode is disposed on the top surface of the semiconductor crystal, the ladder electrode is disposed on the at least one side of the semiconductor crystal; and the ladder electrode comprises a plurality of sub-electrodes. As compared to the prior art, the semiconductor detector can improve the energy resolution. | 10-30-2014 |
20150233633 | LNG RECOVERY FROM SYNGAS USING A MIXED REFRIGERANT - Processes and systems are provided for recovering a liquid natural gas (LNG) stream from a hydrocarbon-containing feed gas stream using a single closed-loop mixed refrigerant cycle. In particular, the processes and systems described herein can be used to separate methane from carbon monoxide and hydrogen, which are common components in synthesis gas and other hydrocarbon-containing gases. | 08-20-2015 |