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    • 1. 发明授权
    • Channel interleaver having a constellation-based unit-wise permuation module
    • 信道交织器具有基于星座的单位置换模块
    • US08799735B2
    • 2014-08-05
    • US12655521
    • 2009-12-30
    • Ciou-Ping WuPei-Kai LiaoYu-Hao ChangYih-Shen Chen
    • Ciou-Ping WuPei-Kai LiaoYu-Hao ChangYih-Shen Chen
    • G06F11/00
    • H04L1/0066H04L1/0042H04L1/0071H04L27/34
    • A channel interleaver comprises a novel constellation-based permutation module. The channel interleaver first receives a plurality of sets of encoded bits generated from an FEC encoder. The encoded bits are distributed into multiple subblocks and each subblock comprises a plurality of adjacent bits. A subblock interleaver interleaves each subblock and outputs a plurality of interleaved bits. The constellation-based permutation module rearranges the interleaved bits and outputs a plurality of rearranged bits. The rearranged bits are supplied to a symbol mapper such that a plurality of consecutively encoded bits in the same set of the encoded bits generated from the FEC encoder is prevented to be mapped onto the same level of bit reliability of a modulation symbol. In addition, the plurality of adjacent bits of each subblock is also prevented to be mapped onto the same level of bit reliability to achieve constellation diversity and to improve decoding performance.
    • 信道交织器包括新颖的基于星座的置换模块。 信道交织器首先接收从FEC编码器生成的多组编码比特。 编码的比特被分配到多个子块中,并且每个子块包括多个相邻的比特。 子块交织器交织每个子块并输出多个交织比特。 基于星座的置换模块重新排列交织的比特并输出多个重新排列的比特。 重新排列的比特被提供给符号映射器,使得从FEC编码器生成的同一组编码比特中的多个连续编码比特被阻止被映射到调制符号的相同级别的比特可靠性。 此外,还防止了每个子块的多个相邻位被映射到相同级别的比特可靠性以实现星座分集并提高解码性能。
    • 2. 发明申请
    • Channel interleaver having a constellation-based unit-wise permuation module
    • 信道交织器具有基于星座的单位置换模块
    • US20100169722A1
    • 2010-07-01
    • US12655521
    • 2009-12-30
    • Ciou-Ping WuPei-Kai LiaoYu-Hao ChangYih-Shen Chen
    • Ciou-Ping WuPei-Kai LiaoYu-Hao ChangYih-Shen Chen
    • G06F11/00
    • H04L1/0066H04L1/0042H04L1/0071H04L27/34
    • A channel interleaver comprises a novel constellation-based permutation module. The channel interleaver first receives a plurality of sets of encoded bits generated from an FEC encoder. The encoded bits are distributed into multiple subblocks and each subblock comprises a plurality of adjacent bits. A subblock interleaver interleaves each subblock and outputs a plurality of interleaved bits. The constellation-based permutation module rearranges the interleaved bits and outputs a plurality of rearranged bits. The rearranged bits are supplied to a symbol mapper such that a plurality of consecutively encoded bits in the same set of the encoded bits generated from the FEC encoder is prevented to be mapped onto the same level of bit reliability of a modulation symbol. In addition, the plurality of adjacent bits of each subblock is also prevented to be mapped onto the same level of bit reliability to achieve constellation diversity and to improve decoding performance.
    • 信道交织器包括新颖的基于星座的置换模块。 信道交织器首先接收从FEC编码器生成的多组编码比特。 编码的比特被分配到多个子块中,并且每个子块包括多个相邻的比特。 子块交织器交织每个子块并输出多个交织比特。 基于星座的置换模块重新排列交织的比特并输出多个重新排列的比特。 重新排列的比特被提供给符号映射器,使得从FEC编码器生成的同一组编码比特中的多个连续编码比特被阻止被映射到调制符号的相同级别的比特可靠性。 此外,还防止了每个子块的多个相邻位被映射到相同级别的比特可靠性以实现星座分集并提高解码性能。
    • 3. 发明授权
    • Channel interleaver having a constellation-based block-wise permuation module
    • 信道交织器具有基于星座的块式置换模块
    • US08468396B2
    • 2013-06-18
    • US12655522
    • 2009-12-30
    • Ciou-Ping WuPei-Kai LiaoYu-Hao ChangYih-Shen Chen
    • Ciou-Ping WuPei-Kai LiaoYu-Hao ChangYih-Shen Chen
    • G06F11/00
    • H04L1/0066H04L1/0042H04L1/0071H04L27/34
    • A channel interleaver comprises a novel constellation-based permutation module. The channel interleaver first receives a plurality of sets of encoded bits generated from an FEC encoder. The encoded bits are distributed into multiple subblocks and each subblock comprises a plurality of adjacent bits. A subblock interleaver interleaves each subblock and outputs a plurality of interleaved bits. The constellation-based permutation module rearranges the interleaved bits and outputs a plurality of rearranged bits. The rearranged bits are supplied to a symbol mapper such that a plurality of consecutively encoded bits in the same set of the encoded bits generated from the FEC encoder is prevented to be mapped onto the same level of bit reliability of a modulation symbol. In addition, the plurality of adjacent bits of each subblock is also prevented to be mapped onto the same level of bit reliability to achieve constellation diversity and to improve decoding performance.
    • 信道交织器包括新颖的基于星座的置换模块。 信道交织器首先接收从FEC编码器生成的多组编码比特。 编码的比特被分配到多个子块中,并且每个子块包括多个相邻的比特。 子块交织器交织每个子块并输出多个交织比特。 基于星座的置换模块重新排列交织的比特并输出多个重新排列的比特。 重新排列的比特被提供给符号映射器,使得从FEC编码器生成的同一组编码比特中的多个连续编码比特被阻止被映射到调制符号的相同级别的比特可靠性。 此外,还防止了每个子块的多个相邻位被映射到相同级别的比特可靠性以实现星座分集并提高解码性能。
    • 4. 发明申请
    • Channel interleaver having a constellation-based block-wise permuation module
    • 信道交织器具有基于星座的块式置换模块
    • US20100169738A1
    • 2010-07-01
    • US12655522
    • 2009-12-30
    • Ciou-Ping WuPei-Kai LiaoYu-Hao ChangYih-Shen Chen
    • Ciou-Ping WuPei-Kai LiaoYu-Hao ChangYih-Shen Chen
    • H03M13/05
    • H04L1/0066H04L1/0042H04L1/0071H04L27/34
    • A channel interleaver comprises a novel constellation-based permutation module. The channel interleaver first receives a plurality of sets of encoded bits generated from an FEC encoder. The encoded bits are distributed into multiple subblocks and each subblock comprises a plurality of adjacent bits. A subblock interleaver interleaves each subblock and outputs a plurality of interleaved bits. The constellation-based permutation module rearranges the interleaved bits and outputs a plurality of rearranged bits. The rearranged bits are supplied to a symbol mapper such that a plurality of consecutively encoded bits in the same set of the encoded bits generated from the FEC encoder is prevented to be mapped onto the same level of bit reliability of a modulation symbol. In addition, the plurality of adjacent bits of each subblock is also prevented to be mapped onto the same level of bit reliability to achieve constellation diversity and to improve decoding performance.
    • 信道交织器包括新颖的基于星座的置换模块。 信道交织器首先接收从FEC编码器生成的多组编码比特。 编码的比特被分配到多个子块中,并且每个子块包括多个相邻的比特。 子块交织器交织每个子块并输出多个交织比特。 基于星座的置换模块重新排列交织的比特并输出多个重新排列的比特。 重新排列的比特被提供给符号映射器,使得从FEC编码器生成的同一组编码比特中的多个连续编码比特被阻止被映射到调制符号的相同级别的比特可靠性。 此外,还防止了每个子块的多个相邻位被映射到相同级别的比特可靠性以实现星座分集并提高解码性能。
    • 5. 发明申请
    • Preamble partition and cell identification procedure in wireless communication systems
    • 无线通信系统中的前导分区和小区识别过程
    • US20110007690A1
    • 2011-01-13
    • US12803832
    • 2010-07-06
    • Yu-Hao ChangYih-Shen ChenPei-Kai Liao
    • Yu-Hao ChangYih-Shen ChenPei-Kai Liao
    • H04W40/00
    • H04W48/20
    • Two preamble partition schemes are provided for flexible network deployment and efficient utilization of limited cell identification resources in a wireless network. In a soft partition scheme, the entire preamble sequences are partitioned into several configurable non-overlapping subsets, and each subset is associated with a corresponding cell type. In a hybrid partition scheme, a combination of fixed and configurable subsets is used for preamble partition. The partitioning information is carried in a broadcasting channel broadcasted from base stations to mobile stations. In one embodiment, after a mobile station performs scanning and synchronization with a first base station, it derives the cell type of the first base station from cell identification and partitioning information. The mobile station completes ranging and network entry with the first base station if the cell type is preferred, and starts to perform scanning and synchronization with a second base station if the cell type is non-preferred.
    • 提供两个前导码分区方案用于无线网络中的有限小区标识资源的灵活网络部署和有效利用。 在软分区方案中,将整个前导码序列划分成若干可配置的非重叠子集,并且每个子集与相应的小区类型相关联。 在混合分区方案中,固定和可配置子集的组合用于前导码分区。 分区信息在从基站广播的广播信道中携带到移动台。 在一个实施例中,在移动台与第一基站执行扫描和同步之后,它从小区识别和分区信息中导出第一基站的小区类型。 如果小区类型是优选的,则移动台完成与第一基站的测距和网络入口,并且如果小区类型是不优选的,则开始执行与第二基站的扫描和同步。
    • 6. 发明授权
    • Preamble partition and cell identification procedure in wireless communication systems
    • 无线通信系统中的前导分区和小区识别过程
    • US08619673B2
    • 2013-12-31
    • US12803832
    • 2010-07-06
    • Yu-Hao ChangYih-Shen ChenPei-Kai Liao
    • Yu-Hao ChangYih-Shen ChenPei-Kai Liao
    • H04W4/00H04W36/00
    • H04W48/20
    • Two preamble partition schemes are provided for flexible network deployment and efficient utilization of limited cell identification resources in a wireless network. In a soft partition scheme, the entire preamble sequences are partitioned into several configurable non-overlapping subsets, and each subset is associated with a corresponding cell type. In a hybrid partition scheme, a combination of fixed and configurable subsets is used for preamble partition. The partitioning information is carried in a broadcasting channel broadcasted from base stations to mobile stations. In one embodiment, after a mobile station performs scanning and synchronization with a first base station, it derives the cell type of the first base station from cell identification and partitioning information. The mobile station completes ranging and network entry with the first base station if the cell type is preferred, and starts to perform scanning and synchronization with a second base station if the cell type is non-preferred.
    • 提供两个前导码分区方案用于无线网络中的有限小区标识资源的灵活网络部署和有效利用。 在软分区方案中,将整个前导码序列划分成若干可配置的非重叠子集,并且每个子集与相应的小区类型相关联。 在混合分区方案中,固定和可配置子集的组合用于前导码分区。 分区信息在从基站广播的广播信道中携带到移动台。 在一个实施例中,在移动台与第一基站执行扫描和同步之后,它从小区识别和分区信息中导出第一基站的小区类型。 如果小区类型是优选的,则移动台完成与第一基站的测距和网络入口,并且如果小区类型是不优选的,则开始执行与第二基站的扫描和同步。
    • 9. 发明授权
    • Unified synchronous ranging channel structure and ranging code generation and detection in wireless OFDMA systems
    • 无线OFDMA系统中的统一同步测距信道结构和测距码生成和检测
    • US08345659B2
    • 2013-01-01
    • US12653336
    • 2009-12-11
    • Yih-Shen ChenPei-Kai Liao
    • Yih-Shen ChenPei-Kai Liao
    • H04J3/06
    • H04L27/2607H04L5/0007H04L5/0053H04L5/0073H04L27/2655H04W56/0005
    • A unified synchronous ranging channel is provided. The unified synchronous ranging channel has a ranging cyclic prefix length that is the same as a cyclic prefix length of a data channel. The unified synchronous ranging channel is used for one of initial ranging, handover ranging, and periodic ranging between a mobile station and a femto base station. In one embodiment, the synchronous ranging channel spans over a two-dimensional radio resource region having a first number of subcarriers along frequency domain, a second number of OFDM symbols along time domain, and a third number of time-domain repetition. At the transmit side, a ranging code sequence is generated by applying a fixed time-domain cyclic shift per OFDM symbol to a root sequence. At the receive side, the ranging code sequence is decoded by using a summation module, a likelihood-combining module, and a modified peak test module that normalizes a peak value.
    • 提供统一的同步测距通道。 统一同步测距信道具有与数据信道的循环前缀长度相同的测距循环前缀长度。 统一的同步测距信道用于移动台和毫微微基站之间的初始测距,切换测距和周期性测距之一。 在一个实施例中,同步测距信道跨越具有沿频域的第一数量子载波的二维无线电资源区域,沿时域的第二数量的OFDM符号和第三数量的时域重复。 在发送侧,通过对根序列应用每OFDM符号的固定时域循环移位来生成测距码序列。 在接收侧,通过使用求和模块,似然合成模块和归一化峰值的修改峰值测试模块对测距代码序列进行解码。
    • 10. 发明授权
    • Methods of contention-based transmission
    • 基于争用的传输方法
    • US08964658B2
    • 2015-02-24
    • US13065797
    • 2011-03-30
    • Yih-Shen ChenChia-Chun HsuChih-Yuan LinPei-Kai Liao
    • Yih-Shen ChenChia-Chun HsuChih-Yuan LinPei-Kai Liao
    • H04W4/00H04W74/08H04W72/04H04W72/12
    • H04W74/0841H04W72/0453H04W72/0466H04W72/1284
    • A method for contention-based (CB) uplink transmission in a wireless communication network is provided. A base station (eNB) first transmits CB configuration information and CB grant to a user equipment (UE). The UE derives a plurality of transmission opportunities from the uplink CB grant and in response transmits uplink CB data via one of the transmission opportunities. The UE then receives an acknowledgment from the serving base station. If the uplink CB data is non-decodable by the eNB due to multiple contention UEs, then the UE retransmits the uplink data in response to a negative acknowledgment. In one novel aspect, the uplink transmission radio resource carriers both the uplink CB data and UE-selected signature information. In one embodiment, the UE-selected signature information is transmitted via pilot tones. By eliminating a separate phase of contention resolution, the overall latency of CB transmission is reduced and transmission efficiency is improved.
    • 提供了一种在无线通信网络中基于争用(CB)上行链路传输的方法。 基站(eNB)首先向用户设备(UE)发送CB配置信息和CB授权。 UE从上行链路CB授权中导出多个传输机会,并且响应于传输机会中的一个发送上行链路CB数据。 然后,UE从服务基站接收确认。 如果上行CB数据由于多个争用UE而被eNB无法解码,则UE响应于否定确认重发上行链路数据。 在一个新颖的方面,上行链路传输无线电资源承载上行链路CB数据和UE选择的签名信息。 在一个实施例中,经由导频音发送UE选择的签名信息。 通过消除争用解决的单独阶段,CB传输的总体延迟降低,传输效率提高。