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    Successive interference cancellation receiver processing with selection diversity
    1.
    发明专利
    Successive interference cancellation receiver processing with selection diversity 有权
    具有选择性多样性的连续干扰消除接收器处理

    公开(公告)号：JP2008042933A

    公开(公告)日：2008-02-21

    申请号：JP2007232113

    申请日：2007-09-07

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： KADOUS TAMER ,  SUBRAMANIAM ANAND D

    IPC: H04J99/00 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04L1/00 ,  H04L1/06

    CPC classification number: H04L1/0687 ,  H04B7/0602 ,  H04B7/0802 ,  H04L1/0003 ,  H04L1/0009

    Abstract: PROBLEM TO BE SOLVED: To provide techniques to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of N T transmit antennas may be turned on or off. SOLUTION: A SIC receiver recovers the transmitted symbol streams in a specific order. Up to N T ! orderings are evaluated. For each ordering, N T post-detection SNRs are obtained for N T transmit antennas and used to determine N T data rates, where the data rate is zero if the post-detection SNR is worse than a minimum required SNR. An overall data rate is computed for each ordering based on the N T data rates. The ordering with the highest overall data rate is selected for use. Up to N T symbol streams are processed at the data rates for the selected ordering and transmitted. The transmitted symbol streams are recovered in accordance with the selected ordering. COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题：提供用于支持具有选择分集的连续干扰消除（SIC）接收机处理的技术，由此N T 个发射天线中的每一个可以被接通或关断。 解决方案：SIC接收器以特定顺序恢复发送的符号流。 直到N T ！ 对订单进行评估。 对于每个排序，对于N T 发射天线获得N T 检测后SNR，并用于确定N T 数据速率，其中数据 如果后检测SNR比最小所需SNR更差，速率为零。 基于N T 数据速率对每个排序计算总体数据速率。 选择具有最高总数据速率的排序使用。 以所选顺序的数据速率处理多达N T 个符号流，并发送。 所发送的符号流根据所选择的顺序被恢复。 版权所有（C）2008，JPO＆INPIT

    Local transmission and wide area transmission in wireless broadcast communication network
    2.
    发明专利
    Local transmission and wide area transmission in wireless broadcast communication network 审中-公开
    无线广播通信网络中的本地传输和宽带传输

    公开(公告)号：JP2010226734A

    公开(公告)日：2010-10-07

    申请号：JP2010098861

    申请日：2010-04-22

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： MURALI RAMASWAMY ,  LING FUYUN ,  VIJAYAN RAJIV ,  WALKER KENT G ,  MANTRAVADI ASHOK ,  SUBRAMANIAM ANAND D

    IPC: H04W4/06 ,  H04L12/18 ,  H04L12/56 ,  H04W72/04 ,  H04W74/04 ,  H04W88/08

    CPC classification number: H04L5/0041 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0048 ,  H04L12/189 ,  H04W72/005

    Abstract: PROBLEM TO BE SOLVED: To provide a method for performing local transmission and wide area transmission in a wireless broadcast communication network. SOLUTION: In order to perform broadcast communications of transmission of different type having a hierarchy with different communication-possible range in a wireless broadcast communication network, each base station processes data for the wide area transmission according to a first mode (or coding scheme and modulation scheme) (S812), and processes data for the local transmission according to a second mode (S813). Based on each desired communication-possible range for the wide area transmission and the local transmission, each of the first mode and the second mode is selected. In the same way, each base station multiplexes the data for the local transmission with the data for the wide area transmission without overlapping partially, and carries out broadcast communication for the multiplexed data. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种用于在无线广播通信网络中执行本地传输和广域传输的方法。 解决方案：为了在无线广播通信网络中执行具有不同通信可能范围的层次的不同类型的传输的广播通信，每个基站根据第一模式（或编码）处理广域传输的数据 方案和调制方案）（S812），并根据第二模式处理本地传输的数据（S813）。 基于用于广域传输和本地传输的每个期望的通信可能范围，选择第一模式和第二模式中的每一个。 以相同的方式，每个基站将用于本地传输的数据与广域传输的数据进行多路复用，而不重叠，部分地进行多路复用数据的广播通信。 版权所有（C）2011，JPO＆INPIT

    Local and wide area transmission in wireless broadcast network
    3.
    发明专利
    Local and wide area transmission in wireless broadcast network 审中-公开
    无线广播网络中的本地和宽带传输

    公开(公告)号：JP2010213320A

    公开(公告)日：2010-09-24

    申请号：JP2010098860

    申请日：2010-04-22

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： MURALI RAMASWAMY ,  LING FUYUN ,  VIJAYAN RAJIV ,  WALKER KENT G ,  MANTRAVADI ASHOK ,  SUBRAMANIAM ANAND D

    IPC: H04W72/12 ,  H04L12/18 ,  H04L12/56 ,  H04W4/06 ,  H04W72/04 ,  H04W74/04 ,  H04W88/08

    CPC classification number: H04L5/0041 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0048 ,  H04L12/189 ,  H04W72/005

    Abstract: PROBLEM TO BE SOLVED: To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network. SOLUTION: Each base station processes data for a wide area transmission in accordance with a first mode (or coding scheme and modulation scheme) to generate data symbols for the wide area transmission and processes data for a local transmission in accordance with a second mode for the local transmission. The first and second modes are based on the coverage of for wide-area and local transmissions, respectively. The base station also generates pilots and overhead information for local and wide area transmissions. The data, pilots, and overhead information for local and wide area transmissions are multiplexed onto their transmission spans, which may be different sets of frequency subbands, different time segments, or different groups of subbands in different time segments. More than two different types of transmission may also be multiplexed and broadcast. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：广播在无线广播网络中具有不同层次的不同类型的传输。 解决方案：根据第一模式（或编码方案和调制方案），每个基站处理用于广域传输的数据，以生成用于广域传输的数据符号，并根据第二模式处理本地传输的数据 模式为本地传输。 第一和第二模式分别基于广域和本地传输的覆盖范围。 基站还生成用于本地和广域传输的导频和开销信息。 用于本地和广域传输的数据，导频和开销信息被复用到它们的传输跨度，其可以是不同时间段中的不同组的频率子带，不同的时间段或不同的子带组。 多于两种不同类型的传输也可以被复用和广播。 版权所有（C）2010，JPO＆INPIT

    Local transmission and wide area transmission in wireless broadcast communication network
    5.
    发明专利
    Local transmission and wide area transmission in wireless broadcast communication network 审中-公开
    无线广播通信网络中的本地传输和宽带传输

    公开(公告)号：JP2010226735A

    公开(公告)日：2010-10-07

    申请号：JP2010098862

    申请日：2010-04-22

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： MURALI RAMASWAMY ,  LING FUYUN ,  VIJAYAN RAJIV ,  WALKER KENT G ,  MANTRAVADI ASHOK ,  SUBRAMANIAM ANAND D

    IPC: H04W4/06 ,  H04L12/18 ,  H04L12/56 ,  H04W72/04 ,  H04W74/04 ,  H04W88/08

    CPC classification number: H04L5/0041 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0048 ,  H04L12/189 ,  H04W72/005

    Abstract: PROBLEM TO BE SOLVED: To provide a method for performing local transmission and wide area transmission in a wireless broadcast communication network. SOLUTION: In order to perform broadcast communications of transmission of different type having a hierarchy with different communication-possible range in a wireless broadcast communication network, each base station processes data for the wide area transmission according to a first mode (or coding scheme and modulation scheme) (S812), and processes data for the local transmission according to a second mode (S814). Based on each desired communication-possible range for the wide area transmission and the local transmission, each of the first mode and the second mode is selected. Each base station performs the broadcast communication on the local transmission and the wide area transmission as well as pilots related to them, based on different characteristics for a multi-frequency network and a single network. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种用于在无线广播通信网络中执行本地传输和广域传输的方法。 解决方案：为了在无线广播通信网络中执行具有不同通信可能范围的层次的不同类型的传输的广播通信，每个基站根据第一模式（或编码）处理广域传输的数据 方案和调制方案）（S812），并且根据第二模式处理用于本地传输的数据（S814）。 基于用于广域传输和本地传输的每个期望的通信可能范围，选择第一模式和第二模式中的每一个。 基于多频网络和单个网络的不同特性，每个基站在本地传输和广域传输以及与它们相关的导频上执行广播通信。 版权所有（C）2011，JPO＆INPIT

    SUCCESSIVE INTERFERENCE CANCELLATION RECEIVER PROCESSING WITH SELECTION DIVERSITY
    7.
    发明专利
    SUCCESSIVE INTERFERENCE CANCELLATION RECEIVER PROCESSING WITH SELECTION DIVERSITY 未知

    公开(公告)号：CA2539966A1

    公开(公告)日：2005-04-21

    申请号：CA2539966

    申请日：2004-08-17

    Applicant: QUALCOMM INC

    Inventor： SUBRAMANIAM ANAND D ,  KADOUS TAMER

    IPC: H04B1/00 ,  H04J99/00 ,  H04B7/06 ,  H04B7/08 ,  H04B15/00 ,  H04B17/00 ,  H04L1/00 ,  H04L1/06

    Abstract: Techniques are provided to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of NT transmit antennas may be turned on or off. One symbol stream may be transmitted from each transmit antenna. A SIC receiver recovers the transmitted symbol streams in a specific order. Up to N T ! orderings are evaluated. For each ordering, N T post-detection SNRs are obtained for N T transmit antennas and used to determine N T data rates, where the data rate is zero if the post-detection SNR is worse than a minimum required SNR. An overall data rate is computed for each ordering based on the N T data rates. The ordering with the highest overall data rate is selected for use. Up to N T symbol streams arc processed at the data rates for the selected ordering and transmitted. The transmitted symbol streams are recovered in accordance with the selected ordering.

    REDUCED COMPLEXITY CHANNEL ESTIMATION FOR WIRELESS COMMUNICATION SYSTEMS
    10.
    发明专利
    REDUCED COMPLEXITY CHANNEL ESTIMATION FOR WIRELESS COMMUNICATION SYSTEMS 未知

    公开(公告)号：CA2506438A1

    公开(公告)日：2004-06-03

    申请号：CA2506438

    申请日：2003-11-12

    Applicant: QUALCOMM INC

    Inventor： SUBRAMANIAM ANAND D ,  KADOUS TAMER

    IPC: H04L25/02 ,  H04L27/22 ,  H04L27/26

    Abstract: Techniques to derive a channel estimate using substantially fewer number of complex multiplications than with a brute-force method to derive the same channel estimate. In one method, an intermediate vector B (418) is initially derived based on K sub-vectors of a vector H for a channel frequency respons e estimate and at least two DFT sub-matrices for a DFT matrix W , where K > 1. An intermediate matrix A (420) for the DFT matrix W is also obtained. A leas t square channel impulse response estimate is then derived based on the intermediate vector B and the intermediate matrix A (422). In one implementation, the intermediate vector B is obtained by first computing DFT s of a matrix HTXL , which is formed based on the vector H, to provide a matri x GLXL. Inner products between the columns of a base DFT sub-matrix W1 and the rows of the matrix GLXL are then computed to obtain the entries of the intermediate vector B .

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