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    • 73. 发明申请
    • RADIO COMMUNICATION APPARATUS AND PUNCTURING METHOD
    • 无线电通信设备和接收方法
    • US20100275090A1
    • 2010-10-28
    • US12747492
    • 2007-12-14
    • Kenichi KuriAkihiko NishioKatsuhiko HiramatsuMasaru FukuokaHao Jiang
    • Kenichi KuriAkihiko NishioKatsuhiko HiramatsuMasaru FukuokaHao Jiang
    • H03M13/13G06F11/10
    • H03M13/1185H03M13/353H03M13/6362
    • 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 101 inserts padding bits in a transmission bit sequence based on a parity check matrix, and outputs the generated bit sequence to an LDPC encoding section 102. Using the parity check matrix, LDPC encoding section 102 performs LDPC encoding on the bit sequence input from padding bit insertion section 101, and obtains an LDPC codeword composed of systematic bits and parity bits. Then a puncturing section 103 eliminates padding bits from the LDPC codeword input from. LDPC encoding section 102, and also punctures parity bits in the LDPC codeword in order starting from a parity bit corresponding to a variable node for which the total number of connections to padding bits via check nodes is larger.
    • 提供了一种无线电通信装置,当使用LDPC码作为纠错码时,可以使由于打孔造成的错误率性能的劣化最小化。 在该装置中,填补比特插入部101基于奇偶校验矩阵将填充比特插入到传输比特序列中,并将生成的比特序列输出到LDPC编码部102.使用奇偶校验矩阵,LDPC编码部102进行LDPC 对从填补比特插入部分101输入的比特序列进行编码,并获得由系统比特和奇偶校验比特组成的LDPC码字。 然后,删截部分103从输入的LDPC码字中消除填充比特。 LDPC编码部分102,并且还从针对与通过校验节点的填充比特的总数量的更大的可变节点相对应的奇偶校验位开始顺序地对LDPC码字中的奇偶校验位进行穿孔。
    • 75. 发明申请
    • RADIO COMMUNICATION BASE STATION APPARATUS AND PILOT TRANSMITTING METHOD
    • 无线电通信基站装置和导频发射方法
    • US20090190516A1
    • 2009-07-30
    • US12089391
    • 2006-10-06
    • Masaru FukuokaAkihiko NishioNoriaki Minamida
    • Masaru FukuokaAkihiko NishioNoriaki Minamida
    • H04W88/08H04H20/71H04L27/28
    • H04L27/2613H04L5/0007H04L5/0048H04L25/0232
    • A base station realizing enhancement of the interpolation accuracy of the channel estimate between sub-frames. In a base station (100), a scrambling section (105) carries out scrambling such that a predetermined pilot signal sequence is multiplied by a scrambling sequence containing both a sequence unique to the base station (100) and different with cells and a sequence common to base stations for each chip and generates a pilot sequence containing both a pilot for unicast sub-frame and a pilot for multicast sub-frame, a multiplexing section (106) for time-multiplexing the pilot sequence, the unicast data symbol, and a multicast data symbol for each sub-frame, and an S/P section (107) converts the pilot sequences, the unicast data symbols, and the multicast data symbols sequential serially inputted from the multiplexing section (106) the numbers of which are equal to the number of subcarries included in one OFDM symbol into parallel ones and outputs them to an IFFT section (108).
    • 基站实现子帧之间的信道估计的插值精度的提高。 在基站(100)中,加扰部(105)进行加扰,使得预定的导频信号序列乘以包含基站(100)唯一的序列并且与小区唯一的序列和序列共用的加扰序列 到每个芯片的基站,并且生成包含用于单播子帧的导频和多播子帧的导频的导频序列,用于对导频序列进行时分多路复用的复用部分(106),单播数据符号和 组播数据符号,S / P部分(107)将从多路复用部分(106)串行输入的导频序列,单播数据符号和多播数据符号转换为数目等于 将包括在一个OFDM符号中的子载波的数目分成并行的,并将其输出到IFFT部分(108)。
    • 80. 发明授权
    • Radio communication base station device and radio communication method
    • 无线通信基站装置及无线通信方式
    • US07961695B2
    • 2011-06-14
    • US12522781
    • 2008-01-11
    • Masaru FukuokaAkihiko NishioSeigo NakaoKatsuhiko Hiramatsu
    • Masaru FukuokaAkihiko NishioSeigo NakaoKatsuhiko Hiramatsu
    • H04B7/216
    • H04L1/001H04J11/0026H04J13/16H04L1/0004H04L1/0026H04L1/0038H04L1/1812H04L5/0053H04W52/262H04W52/325H04W52/346H04W72/0466
    • Provided is a radio communication base station device capable of suppressing degradation of a signal error ratio characteristic for a mobile station in the vicinity of the cell center when a plurality of signals whose transmission power is to be controlled are frequency-multiplexed or code-multiplexed. In the device (100), a classification unit (118) classifies a plurality of DPCCH according to the MCS of SCCH into a plurality of groups based on the transmission power intensity. A spread code is allocated for each DPCCH according to the classification result. A spread code for spreading a response signal (ACK signal/NACK signal) is instructed to spread units (103-1 to 103-n). The spread units (103-1 to 103-n) spread the response signal by the spread code instructed from the classification unit (118). According to the classification result in the classification unit (118), a mapping unit (104) maps the response signal after the spread to one of the subcarriers constituting the OFDM symbol.
    • 提供一种无线通信基站装置,其能够抑制当发送功率要被控制的多个信号被频率复用或码复用时,小区中心附近的移动台的信号差错率特性的劣化。 在设备(100)中,分类单元(118)基于发送功率强度将根据SCCH的MCS的多个DPCCH分类为多个组。 根据分类结果为每个DPCCH分配扩频码。 指示用于扩展响应信号(ACK信号/ NACK信号)的扩展码扩展单元(103-1至103-n)。 扩展单元(103-1至103-n)通过从分类单元(118)指示的扩展码扩展响应信号。 根据分类单元(118)的分类结果,映射单元(104)将扩展后的响应信号映射到构成OFDM符号的子载波之一。