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    • 4. 发明授权
    • Opportunistic spectrum access in mobile cognitive radio networks
    • 移动认知无线电网络中的机会频谱接入
    • US08351861B2
    • 2013-01-08
    • US12894663
    • 2010-09-30
    • Alexander MinKyu-Han KimJatinder Pal Singh
    • Alexander MinKyu-Han KimJatinder Pal Singh
    • H04B15/00H04B17/00
    • H04W16/14H04W74/08
    • A method of spectrum access for wireless communications by a secondary unlicensed unit in a CRN environment comprising one or more secondary unlicensed mobile units and one or more primary licensed units includes receiving information indicative of a location and movement of one or more secondary unlicensed units and a channel usage pattern and spatial distribution of one or more primary licensed units is accessed and a guard distance to shield the one or more primary licensed units from interference is calculated. The channel availability to the one or more secondary unlicensed units is then calculated according to a two-state Markov model including the guard distance as a constraint and based on the information indicative of the location and movement of the one or more secondary unlicensed units and the channel usage pattern and spatial distribution of the one or more primary licensed units.
    • 一种用于在包括一个或多个次要非许可移动单元和一个或多个主许可单元的CRN环境中由二次未许可单元进行的无线通信的频谱接入的方法包括接收指示一个或多个次要未许可单元的位置和移动的信息,以及 访问一个或多个主许可单元的信道使用模式和空间分布,并计算屏蔽一个或多个主许可单元免受干扰的保护距离。 然后,根据包括作为约束的保护距离的两状态马尔可夫模型,并且基于指示一个或多个二次未授权单元的位置和移动的信息来计算到一个或多个二次未许可单元的信道可用性, 频道使用模式和一个或多个主要许可单位的空间分布。
    • 10. 发明申请
    • UNEQUAL DELAY CODES FOR BURST-ERASURE CHANNELS
    • 不平时延迟代码用于冲击通道
    • US20100325521A1
    • 2010-12-23
    • US12488206
    • 2009-06-19
    • Ashish KhistiJatinder Pal Singh
    • Ashish KhistiJatinder Pal Singh
    • H03M13/27H03M13/05G06F11/08G06F11/10
    • H03M13/17H03M13/2721H03M13/6306H04L1/0041H04L1/007H04L1/0071
    • An error correction code includes a separate error code portion for each of two or more separate burst erasure durations (or burst error durations). For each burst erasure duration, the code can be employed to recover from the burst erasure with a different delay time. Each error code portion has a particular parameter for burst duration (B) and delay (T), meaning that the code can be used to recover from a burst erasure of duration B with delay T. Each error code portion is based on separating the source symbols into sub-symbols and diagonally interleaving the sub-symbols based on the (B,T) parameters for the error code portion. Accordingly, different burst erasures are recovered from with different delays.
    • 错误校正码包括用于两个或多个单独的突发擦除持续时间(或突发错误持续时间)中的每一个的单独的错误代码部分。 对于每个突发擦除持续时间,可以采用代码以不同的延迟时间从突发擦除恢复。 每个错误代码部分具有用于突发持续时间(B)和延迟(T)的特定参数,这意味着该代码可以用于从具有延迟T的持续时间B的突发擦除中恢复。每个错误代码部分基于将源 基于用于错误代码部分的(B,T)参数,将符号分成子符号并对角地交织子符号。 因此,从不同的延迟恢复不同的突发擦除。