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61. 发明申请

US20090225874A1 MULTIANTENNA COMMUNICATION APPARATUS AND MULTIANTENNA COMMUNICATION SYSTEM 失效
标题翻译：多媒体通信设备和多媒体通信系统
公开(公告)号：US20090225874A1
公开(公告)日：2009-09-10
申请号：US11915377
申请日：2006-05-26
申请人： Xiaoming She , Jifeng Li
发明人： Xiaoming She , Jifeng Li
IPC分类号： H04L27/28
CPC分类号： H04L1/0643 , H04L1/0631 , H04L25/0206 , H04L27/2601
摘要： A multiantenna communication system comprises a determining part (116) that calculates correlation values each between the channel characteristics of the resource blocks in an STBC (Space Time Block Code) and determines a combination pattern exhibiting the highest correlation; a connection distributing part (103) that maps, into a time domain, a frequency domain and a spatial domain, the STBC encoded transport data in accordance with the combination pattern determined by the determining part; a plurality of transmission antennas (107) for transmitting respective signals associated therewith; a plurality of reception antennas (108) for receiving the signals transmitted from the transmission antennas; and a connection multiplexing part (113) that extracts the signals, which belong to the same STBC, from the signals mapped into the time domain, frequency domain and spatial domain in accordance with the combination pattern determined by the determining part, and then combines the data blocks.
摘要翻译：多天线通信系统包括：计算STBC（空时块码）中的资源块的信道特性之间的相关值的确定部（116），并确定表现出最高相关性的组合模式; 根据由确定部确定的组合模式将连接分发部（103）映射到时域中的频域和空域，STBC编码的传输数据; 多个发送天线（107），用于发送与之相关的各个信号; 多个接收天线（108），用于接收从发送天线发送的信号; 以及根据由确定部分确定的组合模式，将属于同一STBC的信号从映射到时域，频域和空间域的信号中提取的连接多路复用部分（113），然后将数据块。

62. 发明申请

US20090122887A1 CARRIER ALLOCATION METHOD IN MULTI CELL ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM 有权
标题翻译：多小区正交频分多址接入系统中的载波分配方法
公开(公告)号：US20090122887A1
公开(公告)日：2009-05-14
申请号：US12092950
申请日：2006-11-16
申请人： Haitao Li , Jifeng Li
发明人： Haitao Li , Jifeng Li
IPC分类号： H04L27/28
CPC分类号： H04L5/0046 , H04L5/0007 , H04L5/0023
摘要： Provided is a carrier allocation method in a multi cell OFDMA system capable of improving the system capacity and the bit error rate performance. The method includes a step (S103) where a user terminal U which has received broadcast information (S101) uses an empty carrier to transmit a known symbol to a base station device, a step (S104) where the base station device estimates an average channel gain of an empty carrier block by using the received known symbol, a step (S105) where the base station device compares the channel gain sizes of the respective carrier blocks according to the estimated average channel gain and allocates a carrier block having a large channel gain to the user terminal, and a step (S106) where the base station device compares channel gains of the respective carriers in the carrier block allocated to the user terminal and selects a carrier having a channel gain lower than a predetermined threshold value so that no data is transmitted in the carrier having the channel gain lower than the predetermined threshold value.
摘要翻译：提供了一种能够提高系统容量和误码率性能的多小区OFDMA系统中的载波分配方法。该方法包括步骤（S103），其中接收到广播信息的用户终端U1（S101）使用空载波向基站装置发送已知符号;步骤（S104），其中，基站装置估计平均信道通过使用接收到的已知符号获得空载波块的增益;步骤（S105），其中基站装置根据估计的平均信道增益来比较各个载波块的信道增益大小，并分配具有大信道增益的载波块以及步骤（S106），其中基站装置比较分配给用户终端的载波块中的各个载波的信道增益，并选择具有低于预定阈值的信道增益的载波，使得不存在数据在具有低于预定阈值的信道增益的载波中发送。

63. 发明申请

US20090046806A1 WIRELESS COMMUNICATION METHOD IN MULTIANTENNA COMMUNICATION SYSTEM 审中-公开
标题翻译：多通信通信系统中的无线通信方法
公开(公告)号：US20090046806A1
公开(公告)日：2009-02-19
申请号：US12092959
申请日：2006-11-24
申请人： Xiaohong Yu , Xiaoming She , Jifeng Li
发明人： Xiaohong Yu , Xiaoming She , Jifeng Li
IPC分类号： H04B1/02 , H04L25/49
CPC分类号： H04L25/03343 , H04B7/0669 , H04B7/0697 , H04L1/0006 , H04L1/0625 , H04L1/1812 , H04L1/1893 , H04L2025/03426
摘要： A wireless communication method in which use of the HERQ technique brings about an improved throughput of data transmission. In this method, if the number of retransmissions n is equal or below an upper limit value (ST404: NO), a transmission mode k is computed for k=n mod 4 at the transmission side (ST405), sub-streams are grouped into combinations of sub-streams according to the channel status fed back from the transmission side if k=1 (ST 407), time-space block coding of the data of each group is performed (ST 408), the coded data is allocated to the corresponding antenna and retransmitted (ST409), and the retransmitted data is combined with the previously transmitted data and time-space block decoding is performed (ST410).
摘要翻译：一种无线通信方法，其中使用HERQ技术带来数据传输的提高的吞吐量。在该方法中，如果重发次数n等于或低于上限值（ST404：否），则在发送侧计算k = n mod 4的发送模式k（ST405），子流被分组为如果k = 1，则根据从发送侧反馈的信道状态的子流的组合（ST407），执行每组的数据的时空块编码（ST408），将编码数据分配给对应的天线并重新发送（ST409），并且将重传的数据与先前发送的数据组合，并执行时空块解码（ST410）。

64. 发明申请

US20090034586A1 TRANSMISSION SYSTEM, TRANSMISSION METHOD, RECEPTION SYSTEM, AND RECEPTION METHOD 失效
标题翻译：传输系统，传输方法，接收系统和接收方法
公开(公告)号：US20090034586A1
公开(公告)日：2009-02-05
申请号：US11909434
申请日：2006-03-29
申请人： Zheng Zhao , Jifeng Li
发明人： Zheng Zhao , Jifeng Li
IPC分类号： H04B1/707
CPC分类号： H04B7/0669 , H04B7/0678 , H04L1/0643
摘要： First normalizing means (12) normalizes first and second code streams (s1, s2). First spreading means (13) spreads the output of the first normalizing means (12). STTD coding means (14) subjects the first and second code streams (s1, S2) to STTD coding. Second normalizing means (15) normalizes the output of the STTD coding means (14). Second spreading means (16) spreads the output of the second normalizing means (15) by means of the same spreading code as that of the first normalizing means (12). Orthogonal transforming means (17) gives the negative signs to odd chips in a second path spread sequence of each code and exchanges the orders of the odd and even chips. Combining means (18) adds first and second spread sequences of the second path produced by orthogonally transforming the first and second spread sequences of the first path. With this, by using the orthogonality of the transmitted sequences at the receiving side, the reception signal can be detected with a lower complexity.
摘要翻译：第一归一化装置（12）对第一和第二码流进行归一化（s1，s2）。第一扩展装置（13）扩展第一归一化装置（12）的输出。 STTD编码装置（14）对第一和第二码流（s1，S2）进行STTD编码。第二归一化装置（15）对STTD编码装置（14）的输出进行归一化。第二扩展装置（16）通过与第一归一化装置（12）相同的扩展码来扩展第二归一化装置（15）的输出。正交变换装置（17）在每个代码的第二路径扩展序列中给出奇数码片的负号，并交换奇数和偶数码片的顺序。组合装置（18）添加通过对第一路径的第一和第二扩展序列进行正交变换而产生的第二路径的第一和第二扩展序列。由此，通过使用发送序列在接收侧的正交性，可以以较低的复杂度来检测接收信号。

65. 发明申请

US20090028263A1 MIMO COMMUNICATION APPARATUS AND DATA RETRANSMISSION METHOD 审中-公开
标题翻译： MIMO通信设备和数据恢复方法
公开(公告)号：US20090028263A1
公开(公告)日：2009-01-29
申请号：US11909450
申请日：2006-03-24
申请人： Xiaohong Yu , Jifeng Li
发明人： Xiaohong Yu , Jifeng Li
IPC分类号： H04B7/02 , H04L1/02
CPC分类号： H04B7/0417 , H04B7/061 , H04B7/0623 , H04L1/06 , H04L1/1607 , H04L1/1812
摘要： A MIMO communication apparatus wherein HARQ technique is utilized, in a MIMO system, to simplify feedback information and hence reduce the amount of information to be transmitted, thereby saving the transmission resources of the system, while improving the efficiency of data transmission. Additionally, this MIMO communication apparatus has a simple structure, while being capable of performing a reliable data retransmission. This MIMO communication apparatus comprises means (buffer 202) for storing ACK/NACK information of each of data substreams generated and fed back by another MIMO communication apparatus; means (transmission efficiency estimating part 208) for estimating, based on the stored information, a transmission efficiency of each data substream; and means (antenna selecting part 203) for selecting, in accordance with a result of that estimation, a predetermined number of antennas having high transmission efficiencies. This MIMO communication apparatus then retransmits data, for which reception errors have occurred, from the selected antennas.
摘要翻译：一种MIMO通信装置，其中在MIMO系统中利用HARQ技术来简化反馈信息，从而减少要发送的信息量，从而在提高数据传输的效率的同时节省系统的传输资源。此外，该MIMO通信装置具有简单的结构，同时能够执行可靠的数据重传。该MIMO通信装置包括用于存储由另一个MIMO通信设备生成和反馈的每个数据子流的ACK / NACK信息的装置（缓冲器202）用于基于所存储的信息估计每个数据子流的传输效率的装置（传输效率估计部分208）以及用于根据该估计结果选择具有高传输效率的预定数量的天线的装置（天线选择部分203）。然后，该MIMO通信装置从所选择的天线重发已发生接收错误的数据。

66. 发明申请

US20070263737A1 Transmitting Apparatus, Receiving Apparatus, Communication System and Communication Method 审中-公开
标题翻译：发射装置，接收装置，通信系统和通信方法
公开(公告)号：US20070263737A1
公开(公告)日：2007-11-15
申请号：US11576129
申请日：2005-09-28
申请人： Jifeng Li , Xiaohong Yu
发明人： Jifeng Li , Xiaohong Yu
IPC分类号： H04L27/28 , H04K1/10
CPC分类号： H04L5/0046 , H04B2201/70701 , H04L1/0002 , H04L1/0009 , H04L1/0068 , H04L5/0007 , H04L5/006
摘要： A receiving apparatus that can effectively use spectra to improve the interference resistance and the information transmission efficiency. In this apparatus, a channel estimating part (1006) uses a pilot received from the transmitting end to perform a channel estimation for each of subcarrier groups. A subcarrier group performance analyzer (1011) calculates, based on a channel estimation result, the SIR value of each subcarrier group. A control command generating part (1012) uses the SIR value of each subcarrier group to generate the puncture information and rate of the subcarrier group, then stores the generated puncture information and rate so as to perform an appropriate process when an S/P converting part (1005) performs an S/P conversion for next received information, and then feeds the generated puncture information and rate back to a transmitting apparatus.
摘要翻译：可以有效利用光谱来提高抗干扰性和信息传输效率的接收装置。在该装置中，信道估计部（1006）使用从发送端接收到的导频，对每个副载波组进行信道估计。子载波组性能分析器（1011）基于信道估计结果计算每个子载波组的SIR值。控制指令生成部（1012）使用每个副载波组的SIR值来生成穿刺信息和子载波组的速率，然后存储所生成的穿刺信息和速率，以便在S / P转换部（1005）对下一个接收到的信息执行S / P转换，然后将所生成的穿刺信息进行馈送并送回发送装置。

67. 发明授权

US07281197B2 Error-correcting encoding apparatus with variable-rate puncturing 有权
标题翻译：具有可变速率穿孔的纠错编码装置
公开(公告)号：US07281197B2
公开(公告)日：2007-10-09
申请号：US10309441
申请日：2002-12-04
申请人： Jifeng Li
发明人： Jifeng Li
IPC分类号： H03M13/35
CPC分类号： H03M13/235 , H03M13/2957 , H03M13/296 , H03M13/2981 , H03M13/635 , H03M13/6356 , H03M13/6362 , H03M13/6516 , H04L1/0041 , H04L1/0045 , H04L1/0066 , H04L1/0069 , H04L1/08
摘要： A desired encoding rate is obtained by an error-correcting encoding apparatus including convolution units provided in parallel with each other. The convolution units provided in parallel with each other perform convoluting processes on source data. An interleaver randomizes the source data provided from one of the convolution units. Puncturing units select data elements form parity data sequences produced by the convolution according to predetermined puncturing patterns. A multiplexing unit provides the parity data elements selected by the puncturing units for the output data sequence.
摘要翻译：通过包括彼此并联设置的卷积单元的纠错编码装置获得期望的编码速率。彼此并行提供的卷积单元对源数据执行卷积处理。交织器将从一个卷积单元提供的源数据随机化。穿刺单元根据预定的穿刺模式，选择由卷积生成的奇偶校验数据序列的数据元素。复用单元提供由穿孔单元为输出数据序列选择的奇偶校验数据元素。

68. 发明申请

US20070022356A1 Input control device and input control method 失效
标题翻译：输入控制装置及输入控制方式
公开(公告)号：US20070022356A1
公开(公告)日：2007-01-25
申请号：US10573255
申请日：2004-09-17
申请人： Jifeng Li
发明人： Jifeng Li
IPC分类号： H03M13/00
CPC分类号： H03M13/2957
摘要： An input control apparatus capable of suppressing characteristic deterioration, reducing the circuit scale of a turbo decoder and effectively using memory of the turbo decoder. In this apparatus, control section (110) acquires information on a coding rate and coding block length of a received signal, determines the number of bits of systematic part Y1, and parity parts Y2 and Y3 in accordance with the coding rate and/or coding block length and so that the number of bits of one sequence of the parity parts falls below the number of bits of systematic part Y1 and controls bit number reduction section (109) so that the determined number of bits is obtained. Bit number reduction section (109) reduces the number of bits of systematic part Y1, and parity parts Y2 and Y3 output from separation section (108) under the control of control section (110) and decoder (111) performs turbo decoding using each sequence reduced by bit number reduction section (109).
摘要翻译：一种能够抑制特性恶化的输入控制装置，降低turbo解码器的电路规模并有效地利用turbo解码器的存储器。在该装置中，控制部（110）获取关于接收信号的编码率和编码块长度的信息，根据编码率确定系统部分Y 1的比特数，奇偶校验部Y 2和Y 3， /或编码块长度，并且使得奇偶校验部分的一个序列的比特数低于系统部分Y 1的比特数，并且控制比特数减少部分（109），使得获得确定的比特数。位数减少部分（109）减少系统部分Y 1的位数，并且在控制部分（110）和解码器（111）的控制下从分离部分（108）输出的奇偶校验部分Y 2和Y 3执行turbo解码使用由位数减少部分（109）减少的每个序列。

69. 发明授权

US06571369B1 Encoding in a communication system 失效
标题翻译：在通信系统中进行编码
公开(公告)号：US06571369B1
公开(公告)日：2003-05-27
申请号：US09377456
申请日：1999-08-19
申请人： Jifeng Li
发明人： Jifeng Li
IPC分类号： H03M1303
CPC分类号： H04L1/0041 , H03M13/2771 , H03M13/296 , H04L1/0066 , H04L1/0071
摘要： The present invention provides an optimum combinational configuration of an encoder and an interleaver of an encoding apparatus with the characteristics of a fading channel taken into account. Signals xk and y1k transmitted to a multiplexer are interleaved and input to a multiplexer. This enables the channel interleaver required between an encoder and multiplexer of a conventional apparatus to be removed. The encoding apparatus includes first and second encoders, first and second interleavers and a multiplexer which multiplexes an output from the first interleaving with an output from the second encoder. Conventionally, a channel interleaver has been provided as a countermeasure against fading. However, in this case, the delay of the channel interleaver is extended to reduce the bit error rate. Therefore, the channel interleaver is removed, and the interleaver is connected in parallel in the encoder so that the delay allowed for one interleaver is extended, thereby improving the transmission characteristics.
摘要翻译：本发明提供具有衰落信道特性的编码装置的编码器和交织器的最佳组合配置。发送到多路复用器的信号xk和y1k被交织并输入到多路复用器。这使得能够去除传统装置的编码器和多路复用器之间所需的信道交织器。编码装置包括第一和第二编码器，第一和第二交织器和多路复用器，其将来自第一交织的输出与来自第二编码器的输出进行复用。通常，已经提供了信道交织器作为抗衰落的对策。然而，在这种情况下，扩展信道交织器的延迟以减少误码率。因此，去除信道交织器，并且交织器在编码器中并行连接，从而延长一个交织器的延迟，从而提高传输特性。

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