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    • 2. 发明公开
    • 무선 통신에서 1차 동기 신호와 2차 동기 신호를 처리하는 방법 및 장치
    • 用于无线通信处理主要和二次同步信号的方法和装置
    • KR1020090097850A
    • 2009-09-16
    • KR1020097009253
    • 2007-10-01
    • 퀄컴 인코포레이티드
    • 말라디,더가,프라사드김,병-훈루오,타오
    • H04B1/7077H04J13/22H04J11/00
    • H04L27/2613H04B2201/70701H04J11/0069H04J13/0059H04J13/107H04J11/0073H04J11/0076
    • Techniques for facilitating cell search by user equipments (UEs) in a wireless communication system are described. In an aspect, a primary synchronization code (PSC) sequence may be generated based on a Frank sequence and a constant amplitude sequence that is repeated multiple times. In another aspect, a set of PSC sequences may be generated based on complementary sequences having good aperiodic correlation properties and efficient implementations. In one design, PSC sequences A+B and B+A may be formed based on Golay complementary sequences A and B, there ''+'' denotes concatenation. In yet another aspect, a set of secondary synchronization code (SSC) sequences may be generated based on a set of base sequences and different modulation symbols of a modulation scheme. Each base sequence may be modulated by each of M possible modulation symbols for the modulation scheme to obtain M different SSC sequences.
    • 描述了用于在无线通信系统中用于用户设备(UE)的小区搜索的技术。 在一方面,可以基于Frank序列和重复多次的恒定幅度序列来生成主同步码(PSC)序列。 在另一方面,可以基于具有良好的非周期相关性质和有效实现的互补序列来生成一组PSC序列。 在一种设计中,可以基于Golay互补序列A和B形成PSC序列A + B和B + A,“+”表示连接。 在另一方面,可以基于一组基本序列和调制方案的不同调制符号来生成一组次同步码(SSC)序列。 每个基本序列可以由用于调制方案的M个可能调制符号中的每一个调制以获得M个不同的SSC序列。
    • 4. 发明公开
    • 그룹화된 안테나들에 대한 코드워드 치환 및 감소된 피드백
    • 用于分组天线的CODEWORD PERMUTATION和减少的反馈
    • KR1020090071582A
    • 2009-07-01
    • KR1020097007012
    • 2007-09-04
    • 퀄컴 인코포레이티드
    • 김,병-훈
    • H04B7/26
    • H04B7/0691H04B7/0632H04B7/0641H04L5/0023H04B7/0413
    • Systems and methodologies are described that facilitate reducing feedback required to be transmitted on a reverse link channel in response to a forward link data transmission for multiple-input multiple-output (MIMO) wireless communication systems. In a per group rate control MIMO system, a codeword can be linked to more than one layer. Codewords are mixed among antennas in the MIMO systems based upon a symmetric permutation of antennas groups. Further, codewords are transmitted in permuted form so that receivers can reduce feedback to a base channel quality indicator (CQI) and a differential CQI. Additionally, spatial diversity is increased for each codeword improving the robustness of the system against inaccurate CQI reports.
    • 描述了系统和方法,其有助于减少响应于用于多输入多输出(MIMO)无线通信系统的前向链路数据传输而在反向链路信道上发送的反馈。 在每组速率控制MIMO系统中,码字可以链接到多于一个层。 基于天线组的对称置换,在MIMO系统中的天线之间混合码字。 此外,代码字以置换形式被发送,使得接收机可以减少对基本信道质量指示符(CQI)和差分CQI的反馈。 此外,针对每个码字增加了空间分集,从而提高了系统针对不准确的CQI报告的鲁棒性。
    • 10. 发明公开
    • 오버샘플링되어 수신된 신호들에 대한 공간-주파수 등화방법 및 장치
    • 用于超级接收信号的空间均衡
    • KR1020080005296A
    • 2008-01-10
    • KR1020077027732
    • 2006-04-26
    • 퀄컴 인코포레이티드
    • 김,병-훈
    • H04B7/08H04B7/26
    • H04B7/0845H04L25/0204H04L25/021H04L25/022H04L25/0242H04L25/0256H04L25/03159H04L2025/03426H04B7/0854
    • Techniques for performing space-frequency equalization and spatial equalization in the frequency domain are described. Space-frequency equalization combines signal components across both space and frequency dimensions whereas spatial equalization combines signal components across space. A receiver obtains input symbols for multiple (M) signal copies from multiple (R) receive antennas and multiple (C) times oversampling, where M is equal to R times C. For space-frequency equalization, the receiver derives equalizer coefficients for the M signal copies, e.g., based on MMSE criterion, filters the input symbols for the M signal copies with the equalizer coefficients, and combines the filtered symbols for the M signal copies to obtain output symbols. Space-frequency equalization may be used for some frequency bins and spatial equalization may be used for other frequency bins to reduce complexity.
    • 描述了在频域中执行空间频率均衡和空间均衡的技术。 空间频率均衡将空间和频率尺寸上的信号分量相结合,而空间均衡将信号分量整合在一起。 接收机从多个(R)接收天线和多(C)次过采样获得多个(M)个信号副本的输入符号,其中M等于R次C.对于空间频率均衡,接收机导出M的均衡器系数 信号复制,例如,基于MMSE标准,用均衡器系数对M个信号副本的输入符号进行滤波,并且组合用于M个信号拷贝的滤波符号以获得输出符号。 空频均衡可以用于一些频率仓,并且空间均衡可以用于其他频率仓,以降低复杂度。