Patent application number | Description | Published |
20080253484 | METHOD AND APPARATUS FOR REFERENCE SIGNAL GENERATION IN WIRELESS COMMUNICATION SYSTEM - To provide a reference signal generation method and apparatus capable of obtaining many reference signal sequences having excellent properties. CAZAC sequences that satisfy the condition that the absolute value (|N−L|) of a difference between a sub-carrier number N in a resource block and a CAZAC sequence length L is not larger than a threshold value K are selected, and a sequence having a largest among greatest prime factors among the prime factors constituting the sequence length(s) is further selected from the initially selected sequences. Then, a reference signal sequence(s) is generated from a selected CAZAC sequence. | 10-16-2008 |
20090042512 | MOBILE COMMUNICATION SYSTEM, BASE STATION, AND INTER-CELL INTERFERENCE REDUCTION METHOD - Base stations ( | 02-12-2009 |
20090052427 | SINGLE CARRIER TRANSMISSION SYSTEM, COMMUNICATION DEVICE, AND SINGLE CARRIER TRANSMISSION METHOD USING FOR THEM | 02-26-2009 |
20090122886 | TRANSMITTING/RECEIVING SYSTEM, TRANSMITTING APPARATUS, AND PILOT SIGNAL MULTIPLEXING METHOD USED IN THEM - At a transmitting side ( | 05-14-2009 |
20090201950 | BAND LIMITING METHOD AND WIRELESS COMMUNICATION SYSTEM - A receiver estimates a channel quality. A transmitter amplifies a signal by a gain proportional to a difference between a required signal-to-noise power ratio and channel quality information, which is an estimation result of the channel quality, and transmits the signal so that the receiver can obtain the signal-to-noise power ratio. In this case, the receiver or the transmitter determines a roll-off rate of an adaptive filter based on the channel quality information. The transmitter uses the adaptive filter of the determined roll-off rate to filter and transmit the signal. | 08-13-2009 |
20100098189 | TRANSMITTER AND RECEIVER FOR A WIRELESS ACCESS SYSTEM, TRANSMISSION METHOD AND RECEPTION METHOD OF THE WIRELESS ACCESS SYSTEM, AND A PROGRAM FOR SAME - An arithmetic process of a quadratic formula that is contained in an exponent of a CAZAC sequence-defining expression is converted to an arithmetic process of a recursion formula to find the above-described exponent, the above-described exponent that was found is used to generate a CAZAC sequence, and the above-described CAZAC sequence that was generated is taken as the reference signal for transmitting and receiving or as a random access preamble signal. | 04-22-2010 |
20120170538 | WIRELESS COMMUNICATION SYSTEM, PILOT SEQUENCE ALLOCATION APPARATUS, PILOT SEQUENCE ALLOCATING METHOD USED FOR THE SYSTEM AND APPARATUS, AND MOBILE STATION USED IN THE METHOD - A mobile station in a wireless communication system including a base station, and a method for the mobile station includes a unit that sends a pilot signal to the base station. A sub-frame used for sending the pilot signal includes a first pilot block and a second pilot block. A first Zadoff-Chu sequence allocated to the first pilot block is different from a second Zadoff-Chu sequence allocated to the second pilot block. | 07-05-2012 |
20120287874 | FREQUENCY OFFSET ESTIMATION METHOD, COMMUNICATION APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND PROGRAM - A frequency offset estimation unit estimates a frequency offset by combining information on a maximum window having a maximum peak power obtained from a received PRACH (Physical Random Access Channel) signal and a sign of a phase of a correlation value between channel estimation values obtained from a received PUSCH (Physical Uplink Shared Channel) signal. | 11-15-2012 |
20120307766 | COMMUNICATION SYSTEM, BASE STATION, MOBILE STATION, METHOD FOR MOBILE STATION, AND METHOD FOR COMMUNICATION SYSTEM - A mobile station in a communication system including a base station, the mobile station includes a unit for sending a signal that allocates a plurality of different Zadoff-Chu sequences to a frame to the base station. | 12-06-2012 |
20130024753 | DECODING DEVICE AND DECODING ORDER CONTROL METHOD - A decoding device that performs decoding of data transmitted from each of a plurality of users comprises an iterative decoding section that repeats decoding of the data until no error is detected in a result of decoding, an error detection section that performs error detection on the decoding result each time decoding is performed, and a decoding order control section that estimates with respect to each of the plurality of users a decoding completion time, which is a time period the time period required until no error is detected in the result of decoding of the data transmitted from the user, and that assigns priorities to the users in increasing order of the estimated decoding completion time. The iterative decoding section performs decoding of the data transmitted from the users for the users in descending order of the priorities. | 01-24-2013 |
20130272246 | COMMUNICATION SYSTEM, BASE STATION, MOBILE STATION, METHOD FOR MOBILE STATION, AND METHOD FOR COMMUNICATION SYSTEM - A device and method in which a plurality of Zadoff-Chu sequences is allocated to a frame, a value of a parameter in the Zadoff-Chu sequence is different among the plurality of Zadoff-Chu sequences, and the Zadoff-Chu sequence allocated to the frame is different among a plurality of cells. | 10-17-2013 |
20140003544 | SINGLE CARRIER TRANSMISSION SYSTEM, COMMUNICATION DEVICE, AND SINGLE CARRIER TRANSMISSION METHOD USING FOR THEM | 01-02-2014 |
20140136922 | RADIO TRANSMITTING/RECEIVING DEVICE, COMMUNICATION SYSTEM, AND CHANNEL CODING PROCESSING METHOD USED THEREBY - A radio transmitting/receiving device uses a channel interleaver with turbo codes serving as error-correcting codes to convert burst errors into random errors. The radio transmitting/receiving device, in Code Block Concatenation ( | 05-15-2014 |